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Greater consumer demand for sustainable, nutrient-dense grains has inreased research emphasis on underutilized wheat species, such as ancient grains. However, these wheat species have different physicochemical qualities, in comparison to conventional hexaploid bread wheat. Consequently, the end-product quality of baked products developed using ancient wheat species is inferior to those that use common hexaploid bread wheat. In this review, approaches that can be used to enhance the functionality of ancient grains are explored as resolving these limitations is essential for expanding the use of these underutilized grains in bakery applications. An evaluation of the current literature suggests a need to examine existing ingredient technology-related solutions and processing techniques, as well as their anticipated impacts on the functionalities of these underutilized wheat species, for development of value-added bakery products. Furthermore, the findings indicate that an in-depth understanding of the physicochemical properties of ancient grains and the impact of different functionality enhancement techniques on the chemistry of these grains is essential to successfully utilize different ingredient technologies and processing techniques. Therefore, this is an area of research that needs further investigations, especially from an underutilized grains standpoint, to fully unravel the potential of these grains in different bakery applications. [ABSTRACT FROM AUTHOR]

In this innovative work, the fillers obtained by grinding Samanea Saman flowers were utilized for the fabrication of PLA biocomposites. Melt compounding of SSF fillers and PLA with a co-rotating twin-screw extruder permits the simple production of biocomposites with a substantial stage of filler distribution. The elemental compositions and surface morphology of PLA/SSF biocomposite were analyzed using energy dispersive X-ray (EDX) and scanning electron microscopy (SEM) apparatus. The crystalline structure of the PLA/SSF composite was identified using a Bruker AXS X-ray diffractometer. The mechanical properties were also analyzed for different weight fractions (10, 20 wt.%) of SSF fillers loaded into PLA biocomposite. The thermal characterization was done using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques. As shown by the results, all of the studied properties were significantly affected by the inclusion of SSF fillers. Tensile strengths of the 10 wt.% and 20 wt.% SSF-loaded PLA composites were 41 MPa and 43 MPa, respectively, compared to 37 MPa for the neat PLA specimen. The maximum flexural strength achieved was 72 ± 0.5 MPa for 20 wt.% SSF-loaded PLA biocomposite, whereas the slightly lower strength achieved was 70 ± 0.5 MPa for 10 wt.% filler reinforcement. The PLA matrix's lowest compressive strength of 330.5 MPa was found to be in the absence of natural fillers, whereas 10 wt.% and 20 wt.% PLA biocomposites that had been loaded with SSF showed higher compressive strength measurements of 36 and 37 MPa, respectively. It was also observed the slight difference in hardness values between neat PLA and 10 wt.% SSF-loaded biocomposite, but more difference with 20 wt.% SSF-loaded composite. The stiffening effect, good interfacial interaction, and homogeneous dispersion of SSF particles are the main reasons for the improvement in mechanical properties. The thermal analysis of PLA biocomposite reveals the slight shift in degradation temperature due to lower thermal stability of SSF fillers. Taking into account all of these facts, the PLA biocomposites with 20% SSF filler displayed excellent performance in the conducted experiments. [ABSTRACT FROM AUTHOR]

Purpose: To determine the pre-operative, peri-operative, or post-operative risk factors that contribute to pediatric frontalis sling infection or exposure. Methods: Retrospective study of 193 eyelids that underwent silicone-rod frontalis sling surgery at a single institution between 2014 and 2019. Results: A total of 222 eyelids were originally identified. Of the 222 eyelids that underwent frontalis sling surgery, 193 (86.9%) received silicone-rod slings (SRS), 24 (10.8%) received autologous fascia lata sling (AFS), and 5 (2.3%) received Gore-Tex slings (GS). The 193 eyelids that received SRS met inclusion criteria and underwent further statistical analysis. Patients with SRS who did not receive intra-operative antibiotics had a higher risk of infection or exposure compared to patients with SRS that did receive intraoperative antibiotics (P = 0.03). There was no association between SRS exposure and the other studied risk factors (all P-values > 0.41). Conclusions: Intraoperative antibiotics should be considered in silicone-rod frontalis suspension surgery, as it associated with a decreased risk of exposure or infection. [ABSTRACT FROM AUTHOR]

There is a need for cost‐effective manufacturing methods to optimize the impregnation and mechanical properties of carbon fiber reinforced thermoplastics (CFRTPs) by overcoming the low flowability of thermoplastics due to their high melt viscosity. In this study, to improve the impregnation of the CFRTP by inducing low melt viscosity, a strategy to control the molecular weight (MW) of thermoplastic polymer was developed. Through the quad‐screw extrusion (QSE) process, as the rotational speed of the QSE increased, the MW of the polypropylene (PP) matrix decreased, resulting in improved flowability and impregnation characteristics of the matrix, as well as enhanced mechanical strength of the CFRTP. The tensile and flexural strengths of the CFRTP were optimized at 1500 rpm, resulting in 77% and 23% improvements, respectively, compared to the CFRTP with raw PP. Therefore, the applied QSE process effectively controlled the MW, melt viscosity, and flowability of the PP matrix and produced CFRTP with improved mechanical strength. Highlights: Mechanical degradation using QSE was applied to improve flowability of matrix.As polymer chain length decreased, impregnation between CF and matrix was improved.The improved impregnation characteristics resulted in the improved mechanical strengths.There is an optimal matrix MW to optimize the mechanical strengths of CFRTP. [ABSTRACT FROM AUTHOR]

In this work, poly(4‐methyl‐1‐pentene)/polypropylene/poly(4‐methyl‐1‐pentene) tri‐layer films were prepared. The microstructure of the film was adjusted by annealing in the temperature range of 150–237.5°C. Afterward, the influence of annealing and stretching temperature on the cavitation behavior of the film was investigated by small‐angle x‐ray scattering (SAXS). Results showed that for the "butterfly" scattering in the early stage, the radius of gyration (Rg) and maximum dimension (Dmax) of voids were ca. 75 and 200 nm, which were hardly influenced by annealing. Whereas, the volume fraction of voids was enlarged obviously, suggesting that more voids were formed; for the "streak" scattering in the late stage, the length of voids (Lv) grew gradually with stretching, and the ultimate value of Lv was 432.5 nm for un‐annealed film and 176 nm for film annealed at 230°C. Simultaneously, the misorientation of voids was reduced from 0.33 to 0.18. As the stretching temperature was elevated from 30 to 45 and 60°C, Rg and Dmax maintained at 75 and 200 nm, and Lv was enlarged to 434 and 432 nm. At the same time, the number of voids was reduced obviously. As the stretching temperature was 90°C, the voids were suppressed. [ABSTRACT FROM AUTHOR]

This work aims to assess the possibility of using packaging industry waste to modify polypropylene products (PPs). The products were made in the form of extruded foil and injected samples. The products were produced using regranulate made of polypropylene cast foil. Maleic anhydride-modified polypropylene (MAPP) and polyolefin elastomer (POE) with a glycidyl ester functional group were used to modify the polypropylene. The samples were produced based on 50% foil waste reground and 50% pure PP. The rheological properties of the blends were assessed using the melt mass flow rate (MFR) technique; thermal properties using the differential scanning calorimetry method (DSC). The products manufactured using the injection molding method were subjected to an analysis of mechanical properties, such as tensile strength and impact strength. Also, in the case of film samples, tensile strength was assessed. Color-change assessments with CIE L*a*b* were carried out for all materials. Injection-molded products based on recycled metallized cast foil showed favorable mechanical properties such as tensile strength (1 MAPP = 26.7 MPa; 2 MAPP = 27.1 MPa), which was higher than the original material (cPP = 20.7 MPa). Also, for the films produced from regrind, the tensile strength was at a level similar (1 MAPP = 24.6 MPa; 2 MAPP/POE = 25.1 MPa) to the films extruded from virgin materials (cPP = 24.9 MPa). The introduction of a POE additive to the blends resulted in increased impact strength (1 MAPP/POE = 31 kJ/mol; 2MAPP/POE = 18 kJ/mol; 3 MAPP/POE = 11 kJ/mol) in relation to unmodified samples (cPP = 7 kJ/mol). The introduction of a POE additive to the tested mixtures improved the impact strength of the injected products by almost 4 times for sample 1 MAPP/POE and 2.5 times for sample 2 MAPP/POE in comparison to virgin cPP. These studies confirmed that foil waste can be successfully used to modify polypropylene products shaped both in the injection and extrusion processes. [ABSTRACT FROM AUTHOR]

Additive flow production of lightweight precision concrete elements In modern flow production, the focus is on the continuously digitally controlled tools in the context of the digital twin. Spray extrusion, especially when combined with a thin layer of shotcrete and ribbed support structures, e. g. for façade elements, results in highly efficient components with high load‐bearing capacity and high‐quality surfaces. The developed combined spray extrusion nozzle offers the possibility of both spraying and extrusion, adaption of mortar and concrete. In addition, the automated integration of anchors is the focus of flow production, for which anchors and tooling systems have been developed. Based on the determination of characteristic values, the practicability and the increase in productivity will be proven. This data will form the basis of a digital twin, in preparation for Industry 4.0. This increase in productivity in additive manufacturing leads to positive economic effects. Applications of high‐strength lightweight structures in the construction industry are becoming more attractive and enable the serial implementation of free‐form modular constructions. [ABSTRACT FROM AUTHOR]

The objective of this work is to study the ability of friction surfacing to deposit metal alloys that are difficult to process with traditional methods. Creep and neutron irradiation-resistant oxide dispersion strengthened (ODS) materials cannot be produced via the conventional casting route due to the insolubility of the oxidic and metallic alloy constituents, causing unintended inhomogeneous oxide dispersion and material behavior. Increasing the silicon content of iron-silicon (Fe-Si) improves electromagnetic properties but embrittles the material significantly, and fusion-based manufacturing methods are unable to process this steel. The solid-state nature of the friction surfacing process offers a potential alternative processing route to enable wider usage of difficult-to-process alloy systems. Both ODS and Fe-Si materials are available in powder forms. While the existing literature in friction surfacing focuses on depositing composites by incorporating small quantities of powders through holes in consumable rods, this is the first study showing that a large charge of powder can be converted to a homogeneous fully consolidated deposit in friction surfacing. A novel methodology is used that incorporates the high portion of powder feedstock into hollow consumable friction surfacing rods (up to 35% volume fraction). It was found that fully consolidated deposits can be produced with powder feedstocks using the proposed methodology. A recrystallized, homogeneous, equiaxed microstructure was observed in Fe-Si 6.8 wt% and a new-generation FeAlOY ODS alloy deposits processed with hollow stainless steel friction surfacing rods. Both powder and rod material plasticize and deposit without bulk intermixing. [ABSTRACT FROM AUTHOR]

Summary: The aim of the present study was to texturise protein from sunflower press cake (SPC) for being consumed as dry snack or, in its hydrated state, as a meat analogue. In preliminary experiments, feed moisture (15–25 g 100 g−1) and extrusion temperature (180 °C–200 °C) were varied when processing commercial sunflower protein flour with a protein content of 51.8 g per 100 g dry matter using low moisture single‐screw extrusion. The extrudates were analysed with regard to specific mechanical energy needs, texture properties in dry and hydrated state, colour, expansion ratio and water binding capacity. Extrusion parameters for achieving maximum expansion, textural force and minimal product moisture were found to be 180 °C and 15 g 100 g−1. Consequently, texturised protein was derived from deoiled SPC using these extrusion parameters. Initial deoiling of the press cake was necessary as it improved texturisation; a higher SME input reached led to increased cross‐linking of the protein matrix. The light coloured and significantly expanded extrudates with high water binding capacity and could serve as basis for further development of snack products or meat analogues. [ABSTRACT FROM AUTHOR]

Background and Objectives: The aims of this study were to assess the functional and phytochemical characteristics, as well as the antioxidant properties, of bran from five distinct rice varieties. Additionally, it evaluated the impact of extrusion cooking on the composition and quantity of individual phytochemicals in both free and bound states in the bran of these varieties. Findings: The functional properties and phytochemical profiles of raw and extruded rice bran from different rice varieties differed significantly. The extrusion process significantly influenced the color, protein solubility, foaming properties, polyphenolics, and amino acid composition of rice bran. Total phenolics ranged from 3.18 to 4.80 mg GAE/g, increased by 12.6%–17% postextrusion. Similarly, total flavonoid content ranged from 15.22 to 17.37 mg RTE/100 g, with a 30%–33% increase after extrusion cooking. Throughout the extrusion process, a rise in the concentration of free phenolics accompanied by a decrease in the concentration of bound phenolics was observed. Conclusion: The study revealed the impact of extrusion cooking on the distribution of total phytochemicals, particularly phenolics and flavonoids, and the levels of antioxidant activity in free and bound phenolics, as well as amino acid composition and functional properties. The extrusion cooking increased levels of free phenolics and 2,2‐diphenyl‐1‐picrylhydrazyl activity, while bound forms decreased. Extrusion cooking variably impacted the functionality and phytochemical content of bran from different rice varieties, thus influencing their likely applications. Significance and Novelty: This study established the foundation for producing food products using extruded rice bran, offering health benefits and meeting the growing demand in the functional food sector. [ABSTRACT FROM AUTHOR]

Fused Filament Fabrication (FFF) is one of the most popular extrusion based metal Additive Manufacturing (AM) Technologies, which has unique advantages in the rapid prototyping of thermoplastic materials, enabling the fabrication of metal parts with low mechanical anisotropy and no residual stress. However, the mechanical properties and dimensional accuracy of FFF printed parts are susceptible to changes in various printing parameters, which affects the FFF application in large-scale manufacturing. This study experimentally studied the effect of various printing parameters namely layer thickness (0.1, 0.2, 0.3, and 0.4 mm), raster angle (0°, 90°, + 45°/−45°, and 0°/90°), raster width (0.3, 0.35, 0.4, and 0.45 mm), and infill density (70, 80, 90, and 100%) on mechanical properties and dimensional accuracy of 316L stainless steel fabricated by FFF. The results showed that the infill density was the most important factor affecting the mechanical properties, followed by the layer thickness, and it was found that higher values of infill density and lower layer thickness result in better tensile strength. Layer thickness was also the main factor affecting the dimensional accuracy, which increased with the decrease in the layer thickness. [ABSTRACT FROM AUTHOR]

In a regular extrusion process for thermoplastic specimen, the material behavior in dies and its rheological properties have a major influence on the mechanical properties and the quality of the extruded product. This study outlines the multiphysical model, which has been adapted to address the specific issues associated with polyamide 12 polymer extrusion. A series of numerical simulations, based on the modeling of material behavior, have been conducted using the computational code Comsol Multiphysics®. These simulations have been applied to the study of polymer melt flows through an industrial extrusion die. The objective of this study is to analyze the influence of the imposed extrusion parameters on the physical field distribution and the material displacement within the die. The die swell at the exit of the extrusion die has been investigated as a function of the imposed pressure. The progression of the polymer flow front inside the extrusion tool and the swelling rates have been analyzed. In particular, the phenomenon of delayed swelling at high pressure has been highlighted at high pressure. Highlights: Polymer swelling at industrial extrusion die exit is investigated.Polymer melt extrusion within industrial extrusion tool is numerically simulated.Flow front progression and extrudate swell are analyzed.Effect of extrusion pressure on instabilities and die swell is highlighted. [ABSTRACT FROM AUTHOR]

The aim of this work is to study new, extruded products based on corn flour enriched with carob bean and the evaluation of its functional quality to develop novel gluten-free food products. Five samples based on corn flour with added carob bean flour (5 to 12.5%) were formulated. Extrusion was performed using a single-screw laboratory extruder at pilot plant scale. Extrusion parameters such as color and carbohydrate content (fiber, sucrose, and starch) were evaluated. Carob bean addition led to an increase in starch, soluble fiber, and insoluble fiber. Texture parameters related to hardness (crunchiness) were significantly reduced with the addition of CB (p < 0.05), detectable from a 5% addition of CB and not significant with more CB content. Samples became browner with the addition of CB; however, when the concentrations of CB are high (>5%) no major differences in color were observed. The extrusion process reduced the content of soluble and insoluble fiber, and sucrose in all formulated samples. Extruded samples with 5–7.5% CB seem to be the best formulation in terms of fiber content, color, and texture parameters. These innovative gluten-free foods could be considered as a source of fiber, and a healthier alternative to some commercially available snacks. [ABSTRACT FROM AUTHOR]

Jackfruit seeds are a highly nutritious, underutilized byproduct that can combat malnutrition and promote a healthy diet. This review evaluates the effects of jackfruit seed flour (JSF) on extrusion and bakery processing, examining its nutritional, functional, and physical properties. Comprehensive analysis showed that JSF in extruded and bakery products improves their nutritional properties and increases functional properties such as bulk density and water holding capacity, whereas it decreases oil holding capacity and expansion ratio. Furthermore, the textural and colour properties became poorer with the higher concentration of JSF due to the absence of gluten. Consumer studies revealed that the overall acceptability of extruded products containing JSF was higher than that of bakery products with similar substitutions. However, optimal formulations are needed to balance nutritional enhancement with desirable textural properties, and the sustainable utilization of this byproduct can lead to the development of a variety of nutritious food products. [ABSTRACT FROM AUTHOR]

This comprehensive review delves into the untapped potential of underutilized legumes in India, offering a deep exploration of their nutritional composition, health benefits, culinary versatility, and functional attributes. Specifically, we examine kidney beans, fava beans, horse gram, and chickpeas, shedding light on their abundant protein content, dietary fiber, vitamins, minerals, and phytochemicals that contribute to human well-being and the prevention of various diseases. The review doesn't shy away from discussing the impact of anti-nutritional factors (ANFs) on legume nutritional quality, while also proposing various culinary techniques such as cooking, roasting, and sprouting as effective strategies to mitigate these effects. Moreover, this review underscores the pivotal role that lesser-known legumes can play in addressing malnutrition, bolstering food security, and advancing sustainable agriculture. It outlines strategies aimed at raising awareness, encouraging further research, promoting cultivation, and facilitating market integration, with a strong emphasis on incorporating these legumes into diversified diets and resilient farming systems. Recognizing the cultural and agricultural significance of underutilized legumes in India, this review provides insights into their historical importance and versatile applications. A case study is presented, featuring chickpeas, fava beans, red kidney beans, and horse gram, highlighting their exceptional nutritional value and addressing the challenges posed by ANFs, which can impede nutrient absorption and digestion. The review further delves into strategies to overcome these challenges, encompassing various processing techniques and genetic modifications. It also thoroughly examines several treatments and their effects on specific ANFs, offering a comprehensive perspective on how to harness the full potential of these underutilized legumes for enhanced nutrition, food security, and sustainable agriculture in India. [ABSTRACT FROM AUTHOR]

ABSTRACT The effectiveness of probiotics in delivering health benefits may be associated with their capacity to maintain a minimum concentration of 106 CFU/g during food storage and to successfully colonize the gastrointestinal tract (GI). Lacticaseibacillus rhamnosus (LR) is a probiotic that does not exhibit adequate stability under harsh conditions. To enhance the survival capacity of LR during gastrointestinal storage, alginate (ALG) was used as a primary encapsulating layer through extrusion microencapsulation. Subsequently, camelina seed mucilage (CSM) and camelina seed protein (CSP) were applied as secondary layers at varying concentrations (0%–4%). Among the tested formulations, ALG‐CSM‐CSP (1.5%, 4%, 4% w/w) exhibited significantly higher encapsulation efficiency (94.15%) and provided appropriate LR encapsulation in SEM image. Three saffron milk desserts (SMD) containing free LR (FLR), microencapsulated LR (MLR), and a control (C) were prepared, followed by physicochemical and microbiological assessments of the samples. The result showed that at the end of storage, SMD had the lowest pH (6.21), the highest acidity (30°D), and maintained the permissible limit of probiotic bacteria (6.7 log cfu/mL) among the samples. In GI, the MLR and FLR survival rates were 43% and 45.4%, respectively on the 14th day of storage, respectively. The MLR hardness (313.70 g), adhesiveness (2.01 mJ), chewiness (9.36) and gumminess (58.8) had the greatest values among the samples. Moreover, SEM images showed a relatively denser structure for MLR. In conclusion, this study highlights the potential of CSM and CSP to protect probiotics, offering valuable insights for developing new functional foods with improved survival during storage and GI. [ABSTRACT FROM AUTHOR]

Background: This clinical study aims to compare postoperative pain after single-visit root canal treatment of teeth with asymptomatic apical periodontitis using epoxy-resin-based AH Plus and calcium silicate-based Endosequence BC sealers with or without sonic activation. Methods: This study included 72 individuals with one first or second mandibular premolar tooth with asymptomatic apical periodontitis. They were randomly divided into four groups according to the root canal sealer (AH Plus or Endosequence BC) and activation protocol (sonic activation or non-activation) (n = 18). The participants were ask to rate their postoperative pain intensity on a NRS scale as none, minimal, moderate, or severe after 24 h, 48 h, 72 h, and 7 days following treatment. Patients were also asked to record the number of prescribed analgesic medication tablets (400 mg of ibuprofen) taken. Statistical analysis were performed using the Mann-Whitney U test, the Friedman test, the Spearman's correlation test, the Chi-square test. Significance level was established at 0.05. Results: There was no statistically significant difference in postoperative pain scores or analgesic intake between AH Plus and Endosequence BC sealers regardless of the activation protocol (p > 0.05). There was no statistically significant difference in postoperative pain scores between the sonic activation and non-activation groups (p > 0.05). A weak positive correlation was detected between Endoactivator sonic activation and sealer extrusion (r = 0.36). Conclusions: AH Plus and EndoSequence BC root canal sealers showed similar results in terms of prevalance and intensity of postoperative pain. Sonic activation and non-activation groups had similar postoperative pain scores. Clinical trial registration: The study was retrospectively registered with ClinicalTrials.gov (NCT06403293). Date of Registration: 07/05/24. [ABSTRACT FROM AUTHOR]

Porthole extrusion enables the production of aluminum profiles with intricate cross-sections. It can efficiently shape complex profiles; however, few studies have investigated complex hot extrusions using porthole dies, particularly with 7000-series aluminum alloys. Although 7000-series aluminum alloys are renowned for their superior strength, they have poor extrudability, especially for complex extrusion profiles. Implementing an effective die design is essential for avoiding extrusion defects and maximizing extrusion performance. In this study, a porthole extrusion method for a complex profile was developed for AA7005, a medium–high-strength aluminum alloy. Computer-aided engineering simulations were employed to analyze die strength and forecast the flow of the material. After the first trial with the initial design, the lower die was slightly modified. However, following this minor modification, there were occurrences of material blockages. A major revision of die design was then performed, in which bearing length, die runout, and pocket shape were all adjusted. For validation, extrusion testing was conducted, and the effectiveness of the modifications was determined. Finally, the extrusion processes of the modified and initial die designs were compared, including their metal flow behavior, maximum extrusion forces, and product dimensions. The study highlights a well-rounded methodology that incorporates simulation and empirical results to comprehensively understand the challenges of complicated profile extrusion processes with medium–high-strength aluminum alloy. [ABSTRACT FROM AUTHOR]

Three-dimensional polymer printing is becoming more popular due to its effectiveness in creating components of any geometric design. Polymer materials can be used at low temperatures but are weaker than other functional materials. Polyetheretherketone (PEEK) is a thermoplastic with outstanding mechanical properties that can tolerate high temperatures. A high-temperature fused deposition modeling machine manufactured PEEK specimens in this experiment to find the ideal printing parameters S1, S2, S3, and S4 were made using varying printing speeds and layer thicknesses. The polymer sample's exterior surface was analyzed using FESEM, while physical characterization was conducted through X-ray diffraction analysis and water contact angle measurement. The strength of each sample in the relevant variables was determined using mechanical testing, such as tensile and compression tests. It was found that specimen S3 having a layer thickness of 0.15 mm and printing speed of 20 mm/s showed a high tensile and compressive strength value of about 78 and 144 MPa respectively than the other three samples. In addition, the fractured tensile samples were analyzed with scanning electron microscopy to discover the factors that contributed to the disparity in the values of their strengths. [ABSTRACT FROM AUTHOR]

Nanocellulose‐reinforced composites hold great promise for outperforming the original polymer matrix by offering exceptional properties, including outstanding barrier characteristics achieved through the establishment of convoluted pathways for the diffusion of water vapor and gases, as well as superior mechanical and thermal properties. Nevertheless, a significant challenge when employing nanocelluloses as reinforcements in polymers arises from their limited compatibility with the polymer matrix, primarily attributed to the abundance of surface hydroxyl groups.To address this limitation, this study focuses on the acetylation modification of cellulose nanocrystals (CNC) and nanofibers (CNF) to enhance their compatibility with the polymer matrix. Poly(butylene adipate‐co‐terephthalate) (PBAT) nanocomposites were developed by incorporating 1 wt% of both untreated and acetylated cellulose. The process involved the molten state mixing of these components using a twin‐screw mini extruder, conducted at 160°C for 7 min. The efficacy of the acetylation process was verified through Fourier transform infrared spectroscopy (FTIR). Scanning electron microscopy (SEM) analysis confirmed the favorable interaction and dispersion of nanocelluloses within the polymer matrix. Importantly, introducing these fillers did not compromise thermal stability but notably enhanced the hydrophobic characteristics of the samples, as confirmed by contact angle measurements. Dynamic mechanical analyses further demonstrated the compatibility and effective interaction between the polymer and fillers. This research uniquely provides a comparative analysis of the effects of acetylated CNC and CNF within a PBAT matrix, unveiling distinct interactions and performance enhancements. Each type of nanocellulose exhibits its own characteristic ways of bonding and dispersing, leading to varying performance improvements for the material. This comparison elucidates the nuanced roles that these nanocelluloses play in reinforcing composites, offering insights into optimizing their contribution to polymer matrices. By demonstrating the differential impact of CNC and CNF post‐acetylation, our study contributes significantly to the field of polymer science, guiding future applications of nanocellulose‐reinforced materials in advanced engineering and sustainability efforts. [ABSTRACT FROM AUTHOR]

In this research work, Al matrix is reinforced with graphene, synthesized by the powder metallurgy method, and further processed by the hot extrusion process. The microstructure of aluminum and Al-graphene composite samples was investigated using FESEM and optical microscopy. The grain structure is investigated to analyze the grain size of pure aluminum and aluminum-graphene composites. Pin on Disk wear test setup is used to investigate the tribological behavior of the developed composites. Developed samples were tested experimentally to evaluate the influence of graphene addition, applied load, and sliding velocity on wear behavior. From the results, the wear rate of Al-Graphene composites is observed to be lower compared to monolithic aluminum samples. However, wear rate increases with the increase in velocity of sliding and the applied load. The Coefficient of Friction (COF) of composite samples was less than that of pure aluminum samples. Results reveal that the graphene-Al composites exhibit superior tribological properties during tribological tests and exhibit a 38.1% reduction in wear rate at a 60 N load. [ABSTRACT FROM AUTHOR]

Fused Filament Fabrication (FFF) is a promising 3D printing technology for industrial and technological applications due to its cost‐effective ability to fabricate large, complex objects from thermoplastics. Nylon 12, a versatile thermoplastic, is widely used for functional prototyping and has significant potential for end‐user applications. Our research focuses on enhancing the mechanical and thermal properties of Nylon 12 by developing composites with ceramic fillers such as zinc oxide (ZnO) and alumina (Al2O3). This is achieved by melt mixing the fillers into the Nylon 12 polymer matrix and preparing filaments using a filament extruder. The optimal concentration of these fillers was determined by analyzing tensile strength of the polymer composites, while DSC was employed for thermal analysis. Additionally, rheological studies were conducted to assess the impact of the fillers on the viscoelastic properties and flow characteristics of Nylon 12. The Carreau‐Yasuda model was employed to study the complex viscosity of the materials. Our findings indicate that the addition of functional fillers enhances the shear thinning behavior of Nylon 12, improving material flow through the printer nozzle. This optimization leads to 3D printed structures with minimal dimensional inaccuracies, ensuring high‐quality prints suitable for commercial applications. Highlights: Different functional fillers reinforced Nylon 12 composites‐based filaments for FDM 3D printing applications are manufactured.Different wt.% of functional fillers are added into Nylon 12 polymer matrix via melt mixing, and their filaments are prepared by filament extruder.Rheological studies of polymer composites were conducted to examine the influence of functional fillers in flow characteristics of polymer.The presence of functional fillers enhanced shear thinning behavior of polymer and develops maximum printable viscosity for extrusion‐based 3D printing. [ABSTRACT FROM AUTHOR]

Objectives: The aim of this study was to develop a biodegradable implant with a slow release of insulin to minimize the amount of repeated drug injections in patients. Developing and designing implants with controlled release of active protein has always been a challenge. To optimize and control the release of insulin in this project, the drug complexing mechanism was used by dextran sulfate sodium (DS) and Poly(3-hydroxybutyrateco-3-hydroxyvalerate) (PHBV) polymer. Materials and Methods: The efficacy of drug binding was evaluated under different molecular ratios of DS, and then a thermogravimetric analysis test was done to check the stability of the drug complex in extrusion. In the final stage, rod-shaped implants of complexed insulin were prepared by an extrusion process, and the drug release was evaluated within 32 days. The drug release kinetics were evaluated using mathematical models. Results: The results showed an increase in insulin binding efficiency percent, up to a ratio of 2.6. The drug release from the implant containing complex insulin was completely controlled. The drug release followed a zero-order release model. Interestingly, the complex form of the drug showed a temperature resistance of 160°C for ten minutes. Conclusion: In this study, for the first time, a controlled release implant of insulin has been developed based on a PHBV polymer. In this method, the extrusion process has been used, which provides the possibility of preparing implants on an industrial scale in the future. Also, their development appears to be a promising treatment for diabetic patients and leads to the elimination of frequent drug injections and then more adherence of the patients to the continuation of the treatment process. [ABSTRACT FROM AUTHOR]

The efficacy of probiotics in providing health benefits may be related to their ability to survive at a sufficient concentration of 106 CFU/g during storage in food and colonization in the gastrointestinal tract. Microencapsulation is a viable method to improve the survivability of probiotics under harsh environmental conditions. In this research, microencapsulated Lactobacillus rhamnosus (MLR) was produced by a two‐layer extrusion technique with sodium alginate and wild sage (Salvia macrosiphon) mucilage (SMM) in varying concentrations ranging from 0.2% to 0.8% as the first and second wall materials, respectively. The microencapsulation efficiency and second layer diameter of beads increased significantly with the increase in SMM concentrations. Microencapsulated Lactobacillus rhamnosus (LR) maintained its minimal concentration (6 log CFU/g) during 9 min at 72°C. The MLR‐date yogurt (DY) sample had the lowest pH, highest acidity, and highest survival rate among the others at the end of storage. In simulated gastrointestinal conditions (SGC), the survival rates of free LR (FLR) and MLR were 45% and 47% on the 14th day of storage, respectively. In sensory properties, MLR had the highest score in odor and texture parameters but not in others. The MLR viscosity (666.3 mPa·s−1) and SEM images show a relatively denser structure for MLR. In conclusion, this study emphasized the potential of using double‐layered beads to protect probiotics, providing valuable inspiration for developing new functional foods with higher survival ability in harsh conditions. [ABSTRACT FROM AUTHOR]

The objective of this study was to evaluate the applicability of zeolite Y as a catalyst for producing bisphenol F (BPF) from phenol and formaldehyde. Catalyst extrudates were prepared by extrusion after adding pseudoboehmite sol (PS) and Ludox (Lu) as alumina and silica binders, respectively. The compressive strength of the catalyst extrudates increased with the addition of Ludox. However, the formaldehyde conversion decreased as more Ludox was used as a binder, resulting in a decrease in the yield of BPF. This decrease is attributed to the reduction in the total amount of acid sites caused by the addition of Ludox. In this study, the Y_PS5_Lu5 catalyst was selected as the most suitable for BPF synthesis. In the BPF synthesis over the Y_PS5_Lu5 catalyst in a catalyst basket reactor, the optimum reaction temperature was determined to be 110 °C. The effect of stirring speed on the yield of BPF was found to be negligible in the range of 200 rpm to 350 rpm. The spent catalyst was able to recover a specific surface area and reaction activity similar to those of a fresh catalyst through regeneration in an air atmosphere at 500 °C. When the Y_PS5_Lu5 extruded catalyst was used in a continuous reaction in a fixed-bed reactor, there was no noticeable deactivation of the catalyst at low space velocities of the reactants. However, when the space velocity was increased to 18.0 h−1, catalyst deactivation was clearly observed. This suggests that periodic regeneration of the catalyst is inevitable in a continuous reaction using the Y_PS5_Lu5 extruded catalyst. [ABSTRACT FROM AUTHOR]

Aim: To identify an optimized strategy for the large‐scale production of nanovesicles (NVs) that preserve the biological properties of exosomes (EXOs) for use in periodontal regeneration. Materials and Methods: NVs from dental follicle stem cells (DFSCs) were prepared through extrusion, and EXOs from DFSCs were isolated. The yield of both extruded NVs (eNVs) and EXOs were quantified through protein concentration and particle number analyses. Their pro‐migration, pro‐proliferation and pro‐osteogenesis capacities were compared subsequently in vitro. Additionally, proteomics analysis was conducted. To further evaluate the periodontal regeneration potential of eNVs and EXOs, they were incorporated into collagen sponges and transplanted into periodontal defects in rats. In vivo imaging and H&E staining were utilized to verify their biodistribution and safety. Micro‐Computed Tomography analysis and histological staining were performed to examine the regeneration of periodontal tissues. Results: The yield of eNVs was nearly 40 times higher than that of EXOs. Interestingly, in vitro experiments indicated that the pro‐migration and pro‐proliferation abilities of eNVs were superior, and the pro‐osteogenesis potential was comparable to EXOs. More importantly, eNVs exhibited periodontal regenerative potential similar to that of EXOs. Conclusions: Extrusion has proven to be an efficient method for generating numerous eNVs with the potential to replace EXOs in periodontal regeneration. [ABSTRACT FROM AUTHOR]

Background: In addition to the integrity of the meniscal hoop function, both the anterior and posterior meniscus roots as well as the meniscotibial and meniscofemoral ligaments are crucial in restraining meniscal extrusion. However, the interaction and load sharing between the roots and these peripheral attachments (PAs) are not known. Purposes: To investigate the influence of an insufficiency of the PAs on the forces acting on a posterior medial meniscus root repair (PMMRR) in both neutral and varus alignment and to explore whether meniscal centralization reduces these forces. Study Design: Controlled laboratory study. Methods: In 8 fresh-frozen human cadaveric knees, an arthroscopic transosseous root repair (step 1) was performed after sectioning the posterior root of the medial meniscus. The pull-out suture was connected to a load cell to allow measurement of the forces acting on the root repair. A medial closing-wedge distal femoral osteotomy was performed to change the mechanical axis from neutral to 5° of varus alignment. The meniscus was completely released from its PAs (step 2), followed by transosseous arthroscopic centralization (step 3). Each step was tested in both neutral and varus alignment. The specimens were subjected to nondestructive dynamic varus loading under axial compression of 300 N in 0°, 15°, 30°, 45°, and 60° flexion. The changes in force acting on the PMMRR were statistically analyzed using a mixed linear model. Results: Axial loading in neutral alignment led to an increase of the force of root repair of 3.1 ± 3.1 N (in 0° flexion) to 6.3 ± 4.4 N (in 60° flexion). In varus alignment, forces increased significantly from 30° (3.5 N; 95% CI, 1.1-5.8 N; P =.01) to 60° (7.1 N; 95% CI, 2.7-11.5 N; P =.007) flexion, in comparison with neutral alignment. Cutting of the PAs in neutral alignment led to a significant increase of root repair forces in all flexion angles, from 7.0 N (95% CI, 1.0-13.0 N; P =.02) to 9.1 N (95% CI, 4.1-14.1 N; P =.003), in comparison with the intact state. Varus alignment significantly increased the forces in the cut states from 4.8 N (95% CI, 1.0-8.5 N; P =.02) to 11.1 N (95% CI, 4.2-18.0 N; P =.006) from 30° to 60° flexion, in comparison with the neutral alignment. Arthroscopic centralization led to restoration of the native forces in both neutral and varus alignment, with no significant differences between the centralized and intact states. Conclusion: An insufficiency of the PAs of the medial meniscus, as well as varus alignment, led to increased forces acting on a PMMRR. These forces were reduced via an arthroscopic meniscal centralization. Clinical Relevance: Performing arthroscopic meniscal centralization concomitantly with PMMRR may reduce failure of the repair by reducing the load of the root. [ABSTRACT FROM AUTHOR]

Extrusion processing of plasticized cassava starch, a prominent industrial crop, with chemical additives offers a thermo-mechanical approach to modify starch structures through physical and chemical interactions. This research investigates the interaction and morphology of thermoplastic cassava starch (TPS) blended with tetrasodium pyrophosphate (Na4P2O7), sodium tripolyphosphate (Na5P3O10), sodium hexametaphosphate (Na6(PO3)6), sodium erythorbate (C6H7O6Na), and sodium nitrite (NaNO2) via twin-screw extrusion. The effects of these additives on the chemical structure, thermal profile, water absorption, and solubility of the TPS were examined. The high temperature and shearing forces within the extruder disrupted hydrogen bonding at α-(1-4) and α-(1-6) glycosidic linkages within anhydroglucose units. Na4P2O7, Na5P3O10 and Na6(PO3)6 induced starch phosphorylation, while 1H NMR and ATR-FTIR analyses revealed that C6H7O6Na and NaNO2 caused starch hydrolysis. These additives hindered starch recrystallization, resulting in higher amorphous fractions that subsequently influenced the thermal properties and stability of the extruded TPS. Furthermore, the type and content of the added modifier influenced the water absorption and solubility of the TPS due to varying levels of interaction. These modified starch materials exhibited enhanced antimicrobial properties against Escherichia coli and Staphylococcus aureus in polyester blends fabricated via extrusion, with nitrite demonstrating the most potent antimicrobial efficacy. These findings suggest that starch modification via either phosphorylation or acid hydrolysis impacts the thermal properties, morphology, and hydrophilicity of extruded cassava TPS. [ABSTRACT FROM AUTHOR]

A novel and original computer scaling-up system for the counter-rotating twin screw extrusion of polymers was developed. In the system, each scaling parameter (scaling criterion) may be considered as an objective function to be minimized for the single parameters or the functional relationships along the length of the screw. Scaling was based on the process simulation, which was performed using the comprehensive (or global) counter-rotating twin screw extrusion program called TSEM (Twin Screw Extrusion Model). The extrusion process was scaled by applying GASESTWIN (Genetic Algorithms Screw Extrusion Scaling) software developed for this purpose using genetic algorithms. Scaling up the extrusion process was carried out to enhance extrusion process throughput according to the scaling criteria specified by the single quantities of polymer melt temperature at the die exit and relative melting length, and by distributions along the screw length of the extrusion parameters of the polymer melt temperature and polymer plasticating. The global objective function had the lowest value for the selected extrusion parameters, which means the minimal differences between the values of the scaled-up processes and extrusion throughput was significantly increased. The solution to the problem of scaling the counter-rotating process presented in this paper complements the existing solutions for optimizing and scaling basic variants of the extrusion process, i.e., flood-fed and starve (metered)-fed single-screw extrusion, as well as co-rotating and counter-rotating twin-screw extrusion. [ABSTRACT FROM AUTHOR]

This study systematically investigates the influence of the composite addition of Ce, La, and Ca elements on the microstructure evolution and mechanical properties of Mg-3Zn-1Mn/Sn (wt.%) alloys. It indicates that the strength of Mg-Zn-Mn series alloys is superior to that of Mg-Zn-Sn series alloys, due to the stronger restriction of nanosized Mn particles on the recrystallization process and grain growth compared with Mg2Sn phases. The addition of the Ca-La-Ce elements significantly enhances the strength of the Mg-3Zn-1Sn alloy (YS increased by approximately 92.5%, UTS increased by approximately 29.2%, and EL decreased by nearly 52.2%), while for the Mg-3Zn-1Mn alloy, a balanced effect on both the strength and performance can be achieved. This difference mainly lies in the more pronounced refined effect on the grain size and the formation of a bimodal grain structure with strip-like un-DRXed grains and surrounding fine DRXed grains for the Mg-3Zn-1Sn alloy. In contrast, the addition of the Ca-La-Ce elements has a less obvious hindrance on the recrystallization process in the Mg-Zn-Mn series alloy, while significantly weakening the extrusion texture while refining the grains. Through in-depth characterization and experimental analysis, it is found that Sn and Ca can promote the formation of brittle and fine secondary phases. A nanoscale Sn phase (Mg2Sn phase) is more likely to accumulate at the grain boundaries, and the size of the nanoscale Ca2Mg6Zn3 in Mg-Zn-Mn series alloys is finer and more dispersed than that in Mg-Zn-Sn series alloys, thus strongly hindering recrystallization and refining the recrystallized structure of the alloy. [ABSTRACT FROM AUTHOR]

In recent years, there has been a lack of information in the literature regarding the extrusion and connection of closed profiles from oxygen-free copper in bridge dies. Available studies contain information on the processes of extrusion and connection of profiles from aluminium alloys and various types of steel. However, there is a lack of detailed data on the values of technological parameters for which copper is joined in the extrusion process. Therefore, one of the goals of this work is to fill the gap in the literature regarding the extrusion of oxygen-free copper in bridge dies. In this work, the authors determined the thermo-mechanical conditions at which oxygen-free copper will be joined. This paper describes the effects of charge temperature and hydrostatic pressure in the weld zone of a bridge die on copper bonding in the fabrication of tubular profiles. Physical tests of the welding process under the conditions of upsetting a material consisting of two parts were carried out using the Gleeble 3800 metallurgical process simulator with the PocketJaw module in the standard configuration for SICO (strain-induced crack opening) tests. For the numerical simulations, the commercial computer programme FORGE®NxT 2.1. using the finite element method (FEM) was used. Based on the analysis of the test results obtained, it was found that complete material bonding during the extrusion process could be achieved for a charge temperature higher than 600 °C and a hydrostatic pressure of 45–65 MPa. [ABSTRACT FROM AUTHOR]

Introduction: Cochlear implantation has become an increasingly common strategy for aural rehabilitation in patients with severe to profound hearing loss who no longer benefit from conventional amplification. In conjunction, immunosuppressive therapies (e.g. disease-modifying anti rheumatic drugs (DMARDs) have become the keystone of management in numerous autoimmune conditions. Given the increasing prevalence of both, a greater proportion of patients will undergo cochlear implantation while on immune-modulating medications. While these medications are usually well tolerated, immunosuppression may put patients a higher risk for device infections. At present, this is not extensively studied within the cochlear implant literature. Methods: We conducted a retrospective chart review and review of the literature. Results: We present the case of an 81-year-old male who experienced wound dehiscence and infection secondary to leflunomide use for treatment of rheumatoid arthritis. Resolution of these issues was noted with a therapeutic drug holiday, and the patient has subsequently undergone re-implantation without issue. Conclusions: The case highlights a potential CI-associated wound complication in the setting of DMARD therapy. Given the increasing prevalence of both CIs and immunosuppressive therapy, future study on the potential for interaction is warranted to identify the best management strategy in the perioperative setting. [ABSTRACT FROM AUTHOR]

Lubricants are necessary for metal forming to avoid direct contact, adhesion, transfer, and scratches from materials and tools. It is also essential for increasing tool durability and reducing energy use. The work aims to study the effects of lubricants and billet geometry on the extrusion of AA6063/5% SiCp. The lubricants were used such as graphite, zinc stearate, and molybdenum disulphide. The friction factor has been determined by the lubricant effect and billet geometry. The simulation was done for the lubricated condition which was compared with experimental results. It was found that improved billet quality was obtained by the graphite-lubricated 12:8 configuration die profile. Also, the friction factor for the graphite-lubricated 12:8 configuration dies profile was 10.5% less compared to other configure profiles. Scanning electron microscopy was used to investigate the surface of the lubricated extruded component, and samples were examined utilizing energy-dispersive X-ray analyses. [ABSTRACT FROM AUTHOR]

Micro- and nano-encapsulation techniques, such as microfluidization, spray drying, and centrifugal extrusion, have been widely utilized in various industries, including pharmaceuticals, food, cosmetics, and agriculture, to improve the stability, shelf life, and bioavailability of active ingredients, such as vitamin A. Emulsion-based delivery platforms offer feasible and appropriate alternatives for safeguarding, encapsulating, and transporting bioactive compounds. Therefore, there is a need to enrich our basic diet to prevent vitamin A deficiency within a population. This review focused on addressing vitamin A shortages, encapsulation techniques for improving the delivery of vital vitamins A and their food applications. Additionally, more studies are required to guarantee the security of nano-delivery strategies, as they proliferate in the food and beverage sector. [ABSTRACT FROM AUTHOR]

Side streams from the agricultural and food industries are considered an interesting alternative source for the production of packaging materials due to their composition. However, their use often involves complex and energy‐intensive extraction of individual components. Therefore, this study investigated the application of entire potato peels, without prior extraction, to produce extruded films. Potato peels (PP) and biobased polybutylene succinate adipate (BioPBS) at 1:0, 3:2, 1:1 and 2:3 ratios were used to produce pellets and films in a two‐stage extrusion process. The influence of PP concentration, the addition of maleic anhydride and tartaric acid as compatibilizers and the addition of carnauba wax on the film properties were characterized in terms of morphological, mechanical, physicochemical and thermal properties. Films with a high PP content (50%–100%) showed weak mechanical properties. However, increasing the BioPBS content to PP/PBS 2:3 resulted in a significant increase in tensile strength and elongation at break to 6.20 MPa and 38.09%, respectively, and significantly reduced the water vapour permeability of the film to 5.5 × 10−6 gm/m2 d Pa. The use of 1% maleic anhydride had no significant effect on tensile strength (6.23 MPa), but further increased the elasticity to 65.48%, with no additional effect on barrier properties. The addition of 0.5% tartaric acid showed a similar elongation at break (56.23%) while significantly increasing the tensile strength to 6.56 MPa. The incorporation of 5% carnauba wax increased the surface hydrophobicity of the films from 69.5° to 99.7°, but at the expense of a decrease in mechanical properties. [ABSTRACT FROM AUTHOR]

Ti(C,N)-based cermets are crucial for high-speed cutting tools and other high-temperature applications, yet there remains a considerable gap in their preparation controllability, fracture strength, and toughness compared to cemented carbide. Despite numerous studies having focused on modifying the hardness and toughness of Ti(C,N)-based cermets by varying process parameters and chemical compositions, this research has used gradient Ti(C,N)-based cermets produced by powder extrusion additive manufacturing (PEM) technology, which is rare. This study developed the gradient structure layer by layer using PEM. The microstructure of the printed and sintered parts was studied, and the hardness, fracture toughness, and bending strength of the gradient material were analyzed. The gradient material demonstrates superior mechanical properties compared to traditional Ti(C,N)-based cermets, with a hardness of 1760 − 23 + 39 HV20, a fracture toughness of 8.5 − 0.4 + 0.3 MPa·m1/2, and a bending strength of 2047 − 43 + 22 MPa. The research will assist researchers in assessing the potential application of PEM and broaden the application fields of gradient Ti(C,N)-based cermets. [ABSTRACT FROM AUTHOR]

Metal screw extrusion (MSE) is a continuous, solid-state forming method utilizing an inherently high degree of deformation to consolidate fragmented input materials into a solid bulk by breaking their oxide skins. Severe plastic deformation with equivalent strain in the range of 10–20 can be achieved depending on set process parameters. Rigorous mixing can be employed to form sophisticated materials like bulk composites, nanocomposites, particle-reinforced metals, and fine-grained materials. Furthermore, the inherent solid-state processing is well suited for recovery of difficult-to-recycle materials. A range of non-ferrous materials has been manufactured by MSE and further characterized in terms of microstructural evolution and mechanical and functional properties. Furthermore, MSE has been studied in terms of flow, accumulated strain, and environmental impact. The following review aims to critically highlight the existing work performed on MSE, compare it to existing and emerging technologies as well as explore future development and possible applications. MSE has the potential to be utilized for numerous commercial applications. To realize industrial use of MSE, key aspects of the process and the influence of processing parameters on the resulting product must be understood. [ABSTRACT FROM AUTHOR]

The recycling of PET trays is highly challenging. The aim of this paper was to investigate the issues related to the mechanical recycling process and, the correlation between feedstock composition and the quality of the produced rPET. Four feedstocks with different degrees of impurity were mechanically recycled at a laboratory pilot scale. The optical and thermal properties of the rPET products were examined to determine the quality and to seek relations with the starting level of impurities. The final products of the PET trays' mechanical recycling were found to be affected by the presence of impurities (organics) and multi-material (non-PET) elements in the feedstocks. The rPET products crystallised faster for contaminated feedstocks showed lower molecular mass and higher yellow index values due to thermal degradation. Yellowing is a crucial parameter in assessing the thermal degradation of rPET. Injection moulded samples corresponding to higher contamination levels, reported values of Yellow Index equal to 179 and 177 compared to 15 of mono-PET sample. The intrinsic viscosity decreased from 0.60 dL/g to just above 0.30 dL/g, and losses were more significant for soiled or multi-material feedstocks. A method of improving the final quality would involve the purification of the starting feedstock from impurities. [ABSTRACT FROM AUTHOR]

Malnutrition and food insecurity are major public health problems in developing countries including Ethiopia. Because of an economic issue and information gap, developing countries' survival depends on foods rich in carbohydrates but deficient in protein and micronutrients. However, it is paramount to mix ingredients that complement different nutritional profiles to alleviate the problem of malnutrition. Hence, in this research, maize, orange‐fleshed sweet potato, sweet lupine, and moringa leaf powder composites were used to develop nutritious instant porridge flour through extrusion cooking. Formulations containing powdered maize, orange‐fleshed sweet potato, sweet lupine, and moringa leaf were developed in the following ratios: 100:0:0:0, 50:35:10:5, 45:30:15:10, and 40:25:20:15, respectively. A completely randomized design was used to determine the blending effect on the functional properties, proximate composition, minerals, and beta‐carotene content of formulated instant porridge flour. Whereas, a randomized complete block design was used for the organoleptic characteristics data. Accordingly, the addition of orange‐fleshed sweet potato, sweet lupine, and moringa leaf powder to maize‐based porridge showed a significant (p < .05) increase in bulk density (0.70 ± 0.02 to 0.74 ± 0.03), water solubility index (10.09 ± 0.08 to 14.16 ± 0.23), protein (9.00 ± 0.00 to 21.10 ± 0.02), ash (1.43 ± 0.07 to 3.36 ± 0.08), fiber (1.55 ± 0.05 to 3.21 ± 0.01), fat (3.37 ± 0.02 to 5.37 ± 0.07), energy (370.89 ± 0.70 to 400.53 ± 0.65), vitamin A (0.00 to 41.00 ± 1.55), iron (3.49 ± 0.02 to 9.58 ± 0.29), zinc (2.89 ± 0.01 to 3.62 ± 0.06), and calcium (40.49 ± 0.42 to 113.34 ± 0.52) contents. However, water absorption index (4.76 ± 0.01 to 3.84 ± 0.01), moisture (8.50 ± 0.08 to 5.60 ± 0.04), and carbohydrate (76.11 ± 0.22 to 66.94 ± 0.02) content were decreased as a result of blending proportion compared to maize porridge (control). Formulated instant maize‐based porridge prepared from 50% maize, 35% orange‐fleshed sweet potato, 10% sweet lupine, and 5% moringa leaf powder scored the highest (above 4 out of 5 in a 5‐point hedonic scale) in all sensory attributes. In conclusion, the addition of orange‐fleshed sweet potato, sweet lupine flour, and moringa leaf powder has improved both macro‐ and micronutrients. Therefore, the development of nutritious maize‐based instant porridge formulated from readily available and underutilized crops can be achieved by extrusion cooking that helps to reduce the prevalence of malnutrition and food insecurity. [ABSTRACT FROM AUTHOR]

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Simple Summary: Intervertebral disc disease is a very common problem in dogs. The disease causes pain and paralysis and leads to the death of many dogs annually. The disease is intimately associated with disc degeneration and calcification, but the precise mechanisms by which these pathological processes are linked remain a mystery. Most studies to date have focused on imaging changes and histopathology of affected discs, but here we take a novel approach exploring the use of a number of different techniques associated with mineralogy and materials science, including atomic force microscopy and scanning and electron microscopy, and assessing the information they are able to provide. Our results have allowed us to generate some testable hypotheses which could ultimately help to unravel the way in which disc degeneration and disease are linked, and lead to novel methods of prevention and treatment. Intervertebral disc degeneration in dogs occurs in an accelerated way and involves calcification, which is associated with disc herniation or extrusion. The degenerative process is complex and involves the transformation of collagen fibres, loss of proteoglycans and notochord cells and a reduction in water content; however, how these processes are linked to future disc extrusion remains unknown. We have employed techniques including Fourier Transform Infra-red Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Uniaxial Compression Loading and Atomic Force Microscopy (AFM) in an attempt to gain a greater understanding of the degenerative process and its consequences on the physical properties of the disc. FTIR verified by TEM demonstrated that calcium phosphate exists in an amorphous state within the disc and that the formation of crystalline particles of hydroxyapatite occurs prior to disc extrusion. AFM identified crystalline agglomerates consistent with hydroxyapatite as well as individual collagen fibres. SEM enabled the identification of regions rich in calcium, phosphorous and oxygen and allowed the visualization of the topographical landscape of the disc. Compression testing generated stress/strain curves which will facilitate investigation into disc stiffness. Ongoing work is aimed at identifying potential areas of intervention in the degenerative process as well as further characterizing the role of calcification in disc extrusion. [ABSTRACT FROM AUTHOR]

Low-density polyethylene (LDPE) has been widely used in various applications due to its flexibility, lightness, and low production cost. However, its massive use in disposable products has raised environmental concerns, prompting the search for more sustainable alternatives. This study aims to investigate the mechanical properties achievable in a composite material utilizing low-density polyethylene (LDPE), potato starch (PS), and cellulose microfibrils (MFCA) at loadings of 0.05%, 0.15%, and 0.30%. Initially, the cellulose acetate microfibrils (MFCA) were produced via an electrospinning process. Subsequently, a dispersive mixture of the aforementioned materials was created through the extrusion and pelletizing process to form pellets. These pellets were then molded by injection molding to produce test specimens in accordance with ASTM D 638, the standard for tensile strength testing. The evaluation of the properties was conducted through mechanical tensile tests (ASTM D638), hardness tests (ASTM D 2240), melt flow index (ASTM D1238), and scanning electron microscopy (SEM). This study determined the influence of cellulose acetate microfibril loadings below 0.3% as reinforcement within a thermoplastic LDPE matrix. It was demonstrated that these microfibrils, due to their length-to-diameter ratio, contribute to an enhancement in the mechanical properties. [ABSTRACT FROM AUTHOR]

Pea proteins are widely used as a food ingredient, especially in sustainable food formulations. The seed itself consists of many proteins with different structures and properties that determine their structure-forming properties in food matrices, such as emulsions, foams, and gels. This review discusses the current insights into the structuring properties of pea protein mixtures (concentrates, isolates) and the resulting individual fractions (globulins, albumins). The structural molecular features of the proteins found in pea seeds are discussed and based on this information, different structural length scales relevant to foods are reviewed. The main finding of this article is that the different pea proteins are able to form and stabilize structural components found in foods such as air-water and oil-water interfaces, gels, and anisotropic structures. Current research reveals that each individual protein fraction has unique structure-forming properties and that tailored breeding and fractionation processes will be required to optimize these properties. Especially the use of albumins, globulins, and mixed albumin-globulins proved to be useful in specific food structures such as foams, emulsions, and self-coacervation, respectively. These new research findings will transform how pea proteins are processed and being used in novel sustainable food formulations in the future. [ABSTRACT FROM AUTHOR]

To explore the influencing factors of surface topography and roughness in ultrasonic elliptical vibration cutting, this study proposed a new prediction model based on the formation mechanism of ultrasonic elliptical vibration cutting surface topography. Applying mathematical transformation ideas and discretization processing, the model considers linear velocity, rear face extrusion, and material rebound and utilizes MATLAB to carry out a simulation analysis of the surface topography. It also verifies the validity and accuracy of the model through experiments. The effects of cutting mode, velocity ratio, feed amount, and tool radius on the surface morphology of ultrasonic elliptical vibration cutting were analyzed using the proposed model. Results show that under the condition of Km < -tanα, the rear face extrusion and material rebound will have a specific impact on the 2-D residual height. In particular, the error between the theoretical roughness of the model and the actual roughness is 20.85%, which can provide some theoretical basis for the selection of machining parameters. [ABSTRACT FROM AUTHOR]

Oat husks are produced during the milling process of oats. Oat husks are a lignocellulosic material that have the potential for valorization thereby improving the circular economy of agricultural by-products. However, due to the high lignocellulosic content, there are limited valorization pathways for oat husks. To improve the anaerobic digestibility of oat husks, pretreatment was investigated as a method to aid valorization. A novel extrusion process was used in an attempt to fragment the lignocellulosic structure of oat husks prior to anaerobic digestion. The extrusion pre-treatment was investigated to determine the effect it may have on altering the methane yield and digestibility of oat husks. Biochemical methane potential assays were undertaken using oat husks with no pre-treatment and extruded oat husks. These assays demonstrated that extruded oat husks produced a significantly higher methane yield of 264ml/gVS fed, which was 27% greater than the methane yield produced from the untreated oat husks. Similarly, the total solids degradation was also significantly higher for extruded oat husks treatment compared to the untreated oat husks. Overall, the extrusion process demonstrated an increased methane yield for oat husks compared to previously published data. The biomethane potential tests suggest that extruded oat husks would be a feedstock suitable for anaerobic digestion. [ABSTRACT FROM AUTHOR]

In a previous study, rice bread was prepared using a combination of rice–wheat mixed flour. To investigate the impact of the partial adoption of extruded rice flour (ERF) on mixed flour (MF) and mixed dough (MD), the effects of adding ERF on the pasting, mixing characteristics, texture, and water retention of the MF and MD were examined by a rapid visco analyzer (RVA), Mixolab, texture profile analysis (TPA), and a low-field nuclear magnetic resonance analyzer (LF-NMR). The PV, TV, BD, FV, and SV of the MF declined as the incorporated amount of ERF increased. There was no significant difference in the PT at the 5–15% addition level (p < 0.05), but it showed an increasing trend at the 20–30% level (p < 0.05). The incorporation of ERF led to a significant increase in the water absorption (WA) of the MD, while the DT, ST, C2, C3, C4, and C5 exhibited a declining trend. The texture analysis revealed a significant decrease in the dough hardness with the addition of ERF, with a 55% reduction in the hardness of the 30% improved mixed dough (IMD), and the cohesiveness increased significantly (p < 0.05). The IMD was mainly composed of weakly bound water. The content of weakly bound water increased with the ERF amount. [ABSTRACT FROM AUTHOR]

Highlights Poly(butylene adipate‐co‐terephthalate) with or without thermoplastic starch is often used as a biodegradable matrix in composites reinforced with 5 and 10 wt% of either microfibrillated cellulose or cellulose nanocrystals. If dispersion of the fillers is well studied, their orientation in melt blended composites requires further understanding. In this study, the effect of a controlled shear rate on the orientation of the filler was investigated to understand how shear rate affects orientation and how orientation affects mechanical properties of the composites. To this end, composites prepared by melt mixing and then compressed were taken as a reference state of low orientation. On the contrary, to orient the fillers, extrusion through a slit die with a determined shear rate was carried out. Results of tensile tests, microscopic observations, atomic force microscopy and dynamic mechanical analysis in the melt showed that orientation of fillers in the flow axis was possible for shear rates higher than 13 s−1. The orientated samples presented enhanced mechanical properties in the elastic domain as opposed to unoriented samples. In general, orientation of fillers leads to uniaxial stiffness at lower filler content with much better ductility. However, this was observed only on samples for which the percolation of the filler was not obtained in the unoriented state, otherwise, orientation proved to be detrimental to the elastic mechanical properties because of the rupture in the formed network. Orientation can be controlled during processing. Sufficient shear rate is required. Orientation improves mechanical properties. Orientation might have a negative effect on rigidity in case of existing network. [ABSTRACT FROM AUTHOR]

This study focused on the development and optimization of thermoplastic starch (TPS) and poly(butylene adipate‐co‐terephthalate) (PBAT) biobased active packaging films by incorporation with grape seed oil, alpha‐tocopherol, and rice husk. In the compound and film production step during extrusion for biobased active packaging film two variables, the antioxidant substance concentration (Grape seed oil, 0.5–4%; alpha‐tocopherol, 0.5–4%; rice husk, 1–5%), TPS concentration (60–90%) were optimized through response surface methodology (RSM) for highest tensile strength (MPa) and antioxidant activity (%) as responses. Among the resulting films, samples containing grape seed oil in particular exhibited an optimal balance, showcasing robust mechanical properties alongside potent antioxidant characteristics. Comprehensive analyses encompassing thickness, density, color, opacity, FTIR spectroscopy, total phenolic content, and energy consumption were conducted to assess the films' viability for potential deployment within the food industry. Based on the findings, it was determined that these biobased active packaging films made of TPS/PBAT held promise in safeguarding food products. [ABSTRACT FROM AUTHOR]