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In this study, three distinct brands of soybean oils with varying proportions of transgenic and non-transgenic were subjected to analysis. The fluorescence intensity (F) was obtained via a fluorescence spectrophotometer, while the absorption (µa) and reduced scattering coefficients (µ's) were obtained by through a self-developed double integrating sphere (DIS) system. A quantitative detection method for the adulteration ratio based on fluorescence spectroscopy was proposed which considered the entangling effect of absorption and scattering. The method entails initially conducting principal component analysis (PCA) on the F, µa and µ's spectra in the range of 350–700 nm, thereby obtaining the first five principal components (PCs) of each kind of spectrum were obtained. Furthermore, the three brands of oil exhibited a discernible clustering tendency when subjected to a three-dimensional PCA mapping approach. The distribution positions of the three spectra in the three plots indicated that they could be considered to complement each other. Following further normalization processing, the PCs were fused and quantitative models were calibrated by using multiple linear regression (MLR), partial least squares regression (PLSR), and support vector regression (SVR). The results indicated that, in comparison to the utilisation of individual spectral characteristics, the fusion of F and µa can effectively mitigate the impact of fluorescence internal filtering, thereby improving the prediction accuracy. Furthermore, the combination of F, µa and µ's can effectively eliminate the interference of scattering on fluorescence, and achieve optimal prediction results. Among them, the MLR model based on F, µa and µ's could reach the best performance, with determination coefficients of calibration (R2c) and validation sets (R2v) reaching 0.959 and 0.947, respectively, while the root mean square error of calibration (RMSEC) and validation sets (RMSEV) were as low as 2.970% and 3.429%, respectively. In comparison, the MLR model based solely on F yielded unsatisfactory results, with R2c and R2v were 0.571 and 0.595. It can be concluded that it can greatly improve the accuracy of predicting the adulteration of transgenic in non-transgenic soybean oil by integrating F, µa and µ's spectroscopy. [ABSTRACT FROM AUTHOR]

The cis-9 trans-11 and trans-10 cis-12 isomers of conjugated linoleic acid (CLA) are associated with anticancer and lipolytic effects in tissues, respectively, but in lactating cows, the latter isomer reduces the milk fat concentration, a detrimental aspect for the dairy industry, as it reduces the yield of milk derivatives. Therefore, the objective of this study was to evaluate the effect of providing protected palmitic acid (PAP) to grazing lactating Holstein cows supplemented with soybean oil as a source of conjugated linoleic acid, on milk production, fat concentration and mitigation of milk fat depression. Nine multiparous Holstein cows were used, distributed in three groups of three cows each, with initial means of days in milk, live weight, milk production, and number of calvings: 124 ± 16 days, 494 ± 53 kg, 20.9 ± 1.3 kg, and 3.2 ± 2.2, respectively. A crossover design with three treatments was used: control (base diet, BD, = grazing +4 kg concentrate without soybean oil + 2.5 kg corn silage), soybean oil (BD with inclusion of 300 g dry basis soybean oil cow−1 day−1), and soybean oil + PAP (BD with inclusion of 300 g dry basis soybean oil and 412 g PAP cow−1 day−1). The groups of cows were on rotational grazing in a mixed pasture of Alfalfa (Medicago sativa) and Orchard grass (Dactylis glomerata). The variables evaluated were as follows: dry matter intake (DM), milk production, concentration of protein, fat and lactose in milk, and milk fat profile. Statistical analysis was through PROC MIXED and comparison of means with Tukey’s test (p < 0.05). There were no differences (p > 0.05) between treatments in dry matter intake, milk production or milk protein and lactose content. But the addition of PAP in the cow diet increased fat-corrected milk production (p = 0.010), yield (p = 0.030) and fat concentration (p = 0.040), and improved the milk fatty acid profile, by increasing (p = 0.010) the concentration of cis-9, trans-11 CLA in milk fat. Soybean oil supplementation in the diet of grazing lactating cows showed no differences in productive variables, and did not cause the expected milk fat depression. However, combining soybean oil with PAP improved the fatty acid profile, increasing the cis-9, trans-11 isomer CLA and palmitic acid in milk fat, with higher yield and fat concentration. [ABSTRACT FROM AUTHOR]

Polyurethanes (PUs) are widely utilized in various industries due to their versatile properties. Traditionally, these polymers are synthesized using petrochemical-based polyols, which pose environmental concerns. To address this issue, there is a growing trend towards the use of bioresources in polymer manufacturing. This study explores the synthesis of a Schiff base diol derived from ethylene diamine (EDA) and vanillin, which can be obtained by depolymerization of lignin. Additionally, a soybean oil-based polyol (SOP) was employed as a sustainable alternative to traditional petroleum-based polyols. The synthesized Schiff base diol and SOP were used to prepare PU films, incorporating both aromatic and aliphatic diisocyanates which are methylene diphenyl diisocyanate (MDI) and hexamethylene diisocyanate (HDI), respectively. The primary objective was to investigate the impact of the aromatic and aliphatic nature of the isocyanates on the properties of the resultant PU films. The thermal stability and mechanical properties of the PU films were evaluated and compared. The results demonstrate that the bio-based PU films exhibit good thermal stability. However, contrary to expectations, the mechanical strength decreased with an increasing amount of Schiff base diol, while the elongation percentage increased. A flammability test was also performed to assess flame retardancy, and an unexpected trend was observed in HDI-containing PU films, which is discussed in detail in the manuscript. The study highlights the potential of using bioresources, such as vanillin and soybean oil, to produce sustainable and thermally stable PUs, paving the way for more environmentally friendly applications in the polymeric industry and beyond. [ABSTRACT FROM AUTHOR]

A series of epoxidized isobutyl esters (EIE) derived from soybean oil deodorizing distillate (SODD) were synthesized via esterification with isobutanol followed by epoxidation. Epoxidized isobutyl soyate (EIS), epoxidized isobutyl soyate distillate (EISD), as well as the epoxidized esters of the main fatty acids contained in SODD, namely, epoxidized isobutyl linoleate (EIL), and epoxidized isobutyl oleate (EIO) were also synthesized and assessed as environmentally friendly plasticizers for polylactide (PLA). A comparison of the plasticizing efficiency of 10 wt.% of these EIE on PLA properties is addressed in this work. The effects of the different EIE on mechanical properties (tensile and impact tests) at 21 ºC, thermal transitions and thermal degradation, dynamic-mechanical thermal properties and dimensional change with temperature, and morphology are evaluated and compared with commercial epoxidized soybean oil (ESBO), and acetyl tributyl citrate (ATBC). Tensile tests indicate that EIE provide increased elongation at break from 8.8% (neat PLA), up to 10–32%, depending on the EIE. EIE seem to be more compatible with PLA as observed by field emission scanning electron microscopy (FESEM) since they do not give evidence of phase separation, or plasticizer saturation, which is clearly observed with ESBO. Regarding thermal properties, all EIE provide a noticeable decrease in the glass transition temperature (Tg) from 61.6 ºC (neat PLA), down to values ranging from 42 to 48 ºC, remarkably lower than the decrease provided by ESBO with a Tg value of 56.6 ºC. These findings reveal that EIE are promising plasticizers for PLA with balanced properties and contribute to improve its intrinsic brittleness by increasing the impact toughness. [ABSTRACT FROM AUTHOR]

The purpose of the current experiment was to determine the effects of ruminal fermentation parameters of the additions of canola or soybean oils at different rates (4, 8 and 12%) to beef cattle total mix rations (TMR), based on corn silage and barley grain. The addition of 4% soybean oil to TMR positively affected in vitro gas production, net energy lactation (NEL), metabolic energy (ME), and organic matter digestion (OMd). The additions of 8% and 12% of soybean oil to TMR linearly decreased ME, NEL and OMd (p < 0.05). The additions of 4, 8 and 12% canola oil to the TMR linearly decreased the in vitro gas production and estimated fermentation values (ME, NEL and OMd) (p < 0.05). All doses of soybean or canola oils in TMR reduced the molarities of total short‐chain fatty acids (tSFCA), acetic (AA), butyric (BA), propionic (PA), valeric (VA), iso‐valeric (IVA) and iso‐butyric acids (IBA) for in vitro fermentation fluid (p < 0.05). There was a negative correlation between the increasing dietary stearic, oleic and linoleic acid and the end‐products of in vitro rumen fermentation. However, increasing dietary α‐linolenic acids had no adverse effect on in vitro ruminal fermentation end‐products. As a result, 4% addition of the soybean oil, which included a higher rate of α‐linolenic acid and saturated fatty acids and a lower rate of oleic, linoleic acids according to those of canola oil, to the TMR positively affected in vitro ruminal fermentation. In addition, the ≥8% addition of canola or soybean oil adversely affected the in vitro fermentation values. [ABSTRACT FROM AUTHOR]

Ascorbyl palmitate is a fat -soluble ester of vitamin C and palmitic acid, which is used to increase the oxidative stability of oils. In this study, in order to increase its stability to the environmental conditions of heat, humidity, oxidation and light, encapsulation technology (nanoliposome) were used in refined soybean oil without antioxidants. In this regard, in this study, 5 concentrations of nanoliposomes containing ascorbyl palmitate (0, 50, 100, 200 and 500 ppm) were used to increase the oxidative stability of soybean oil stored at 63°C (electric oven) for a period of 16 days. Tests such as acidity, peroxide, conjugated dienes, anisidine and oxidative stability were performed on those oils. The results showed that acidity, conjugated dienes and anisidine increased with increasing storage time, but with increasing concentration of nanoliposome containing ascorbyl palmitate, the increase in these characteristics was less intense. By increasing the storage time until the 12th day, the amount of peroxide in the samples increased and then decreased, and with the increase in the antioxidant concentration, the amount of peroxide in the samples decreased. On the other hand, it was shown that increasing the concentration of nanoliposome from zero to 500 ppm in soybean oil increases the oxidative stability by about 96%. Finally, it was found that increasing the concentration of nanoliposomes containing ascorbyl palmitate in soybean oil reduces oil oxidation. [ABSTRACT FROM AUTHOR]

Along with the development of technology and the increasing consumption of polymeric materials, which have become an integral part of man's everyday life, problems related to their disposal are arising. The presented research concentrates on the studies on the enzymatic degradation of selected epoxy-polyurethane materials filled with 2 or 5 wt.% of waste unmodified or chemically modified through mercerization wood flour. Composites, subjected to the degradation process, contained up to 60% of raw materials of natural origin. The enzymatic degradation was carried out for 28 days, in three environmental conditions, differing in the type of applied buffer, pH, process temperature, the amount, and the type of applied enzyme. In this study, the influence of two lipases was tested (specifically: lipase of microbiological origin—Rhizopus Oryzae Lipase, and one of animal origin—Porcine Pancreas Lipase). There were seven compositions tested, based on the polyaddition product of epoxidized soybean oil with bisphenol A, differing in the amount of filler and the type of modification to which wood flour was subjected before the application in the polymer composite. After enzymatic degradation, the greatest progress of biodegradation was observed at T = 30 °C, in a complex phosphate buffer with pH = 6.8, in the presence of the Porcine Pancreas enzyme. Under these conditions, a slightly smaller effect was also observed in the presence of the Rhizopus Oryzae enzyme. At the same time, the compositions containing mercerized wood flour turned out to be the most susceptible to biodegradation with the above-mentioned enzymes. After conducting the process in the full 4-week cycle numerous changes were noticed within the tested sample, such as (1) 7.0 %wt. of the overall weight loss of samples, (2) reducing the value of the static contact angle (e.g., from 116.7° before degradation to 27.2° at the end of the study), and (3) morphological appearance of the sample (sample's surface had suffered erosion noticed as smoothest roughnesses and numerous empty holes throughout its entire volume), concerning sample's condition before enzymatic degradation. [ABSTRACT FROM AUTHOR]

Objectives: This study aims to investigate whether cumulative dose‐dependent isotretinoin (Roaccutane®) could affect orthodontic tooth movement (OTM) and root resorption. Materials and Methods: Ninety male Wistar Albino rats were divided into 4 groups. While, the control (SALINE), solvent (SOYBEAN) and orthodontic drug (ISOTM) groups underwent orthodontic force, the non‐orthodontic drug group (ISO) did not. The rats were administrated saline, soybean oil (SBO) and isotretinoin diluted in SBO (ISOTM, ISO) for 30 days, respectively. Six rats were euthanized in each orthodontic group. Fifty grams of orthodontic force was applied to the remaining rats' first molars using the incisors as anchorage. Six more rats in each group were euthanized on the 7th, 14th and 21st days of the force application. In the ISO group, six rats were euthanized on the 37th, 44th and 51st days of administration. Six rats that were euthanized for ISOTM on the 30th day were also used for ISO to reduce the number of rats used. Micro‐computed tomography (micro‐CT) and histological analysis were performed. Results: Independent of orthodontic force, isotretinoin caused root resorption in the apical region. However, there was no statistically significant influence of isotretinoin on OTM and orthodontically induced root resorption (OIRR). Conclusions: Despite the lack of strong evidence supporting the orthodontically induced resorptive effect of isotretinoin, this study provided findings regarding the resorptive effects of isotretinoin on non‐orthodontic root resorption. Therefore, the present results underscore the importance of close monitoring during orthodontic treatment to mitigate potential root resorption in patients who use isotretinoin because of acne complaints. [ABSTRACT FROM AUTHOR]

The cultivation of soybean is being expanded in traditional areas cultivated with rice, called the lowlands. However, soil characteristics are different from those in the highlands, which influences the exportation of nutrients to the grains. Therefore, this study aimed to determine the physical-chemical and technological characteristics of soybean grains harvested in lowlands in Brazil. Two-year crops (2021/22 and 2022/23) were used with two types of soil preparation (scarified and non-scarified) and six cover crop treatments (oats, clover, ryegrass, fallow, ryegrass + oats, and ryegrass + clover). The influence of these treatments was evaluated in terms of the grain yield, oil and protein contents, oil composition, quality indices (acidity, peroxide, iodine, and saponification), and contents of ash, carbohydrates, and micro- and macronutrients. Grain yield achieved an average of 3829.8 kg ha−1. Soil scarification positively influenced grain yield and contributed to higher protein and oil contents, with maximum values of 32.7 wt% and 27.6 wt%, respectively. The main fatty acids in oil were oleic acid (22.13 ± 1.48–26.32 ± 0.98%) and linoleic acid (36.32 ± 1.57–52.18 ± 1.58%). The macronutrients phosphorus (5.12 ± 0.39–5.79 ± 0.37 kg ton−1), calcium (2.79 ± 0.19–3.05 ± 0.18 kg ton−1), magnesium (2.37 ± 0.14–2.57 ± 0.13 kg ton−1), and sulfur (2.85 ± 0.18–3.19 ± 0.20 kg ton−1), and the micronutrients copper (9.73 ± 1.42–11.68 ± 1.07 g ton−1), iron (111.42 ± 6.86–122.02 ± 5.00 g ton−1), and manganese (43.58 ± 3.34–47.08 ± 2.74 g ton−1) were in agreement with the values reached in the highlands. For potassium (18.87 ± 0.38–29.29 ± 1.44 kg ton−1) and zinc (30.02 ± 2.45–38.00 ± 1.03 g ton−1), soil scarification allows higher levels of absorption. The use of ryegrass as a cover crop allows higher levels of nitrogen absorption, reaching up to 44.93 ± 2.74 kg ton−1. Regarding the acidity (0.19–0.52%), peroxide (9.64–16.39 mEq O2 kg−1), iodine (85.34–91.91 mg KI g−1), and saponification (182.33–203.74 mg KOH g−1) indices of the oil, all values were obtained in accordance with the scientific literature. The conclusions of this study indicate that it is possible to cultivate soybean in lowlands after developing the proper soil preparation. Consequently, the yields are increased, and grains will benefit from higher protein and oil contents, enhancing soybean quality for commercialization. [ABSTRACT FROM AUTHOR]

Neuroinflammation is considered the principal pathogenic mechanism underlying neurodegenerative diseases, and the incidence of brain disorders is closely linked to dietary fat consumption and intestinal health. To investigate this relationship, 60 8-week-old C57BL/6J mice were subjected to a 20-week dietary intervention, wherein they were fed lard and soybean oil, each at 15% and 35% fat energy. At a dietary fat energy level of 35%, inflammation was observed in both the soybean oil and lard groups. Nevertheless, inflammation was more pronounced in the mice that were administered soybean oil. The process by which nerve cell structure is compromised, inflammatory factors are upregulated, brain antioxidant capacity is diminished, and the TLR4/MyD88/NF-κB p65 inflammatory pathway is activated resulting in damage to the brain-gut barrier. This, in turn, leads to a reduction in the abundance of Akkermansia and unclassified_f_Lachnospiraceae, as well as an increase in Dubosiella abundance, ultimately resulting in brain inflammation and damage. These results suggested that soybean oil induces more severe neuroinflammation compared to lard. Our study demonstrated that, at a dietary fat energy level of 35%, compared to soybean oil, lard could be the healthier option, the outcomes would help provide a reference basis for the selection of residents’ daily dietary oil.

Abstract Fat supplements are well known for their multiple beneficial effects on ruminant health, reproduction and productivity, and as a source for certain bioactive compounds in ruminant products. On the other hand, numerous phytochemicals have demonstrated the potential to improve rumen fermentation through modifying the volatile fatty acid (VFA) pattern to favour those with greater energy efficiency, boosting microbial protein synthesis, and decreasing methane emission and ruminal ammonia concentration. Savory is an aromatic plant rich in various phytochemicals (mainly carvacrol and flavonoids) that can alter ruminal metabolism of dietary fatty acids, potentially increasing the production of some bioactive compounds such as conjugated linoleic acids (CLAs). This study aimed to investigate combined effects of oil type (fish oil (FO) versus soybean oil (SO)) and the inclusion of savory (Satureja khuzistanica) plant (SP) in the diet on total tract digestibility of nutrients, rumen fermentation, milk yield and milk fatty acid profile in dairy cattle. Eight multiparous lactating Holstein cows were used in a replicated 4 × 4 Latin square design experiment with four diets and four 21-d periods. During each experimental period consisted of 14 days of adaptation and a 7-day sampling period, cows were randomly assigned to one of the four dietary treatments: the diet supplemented with 2% (DM basis) fish oil (FOD) or soybean oil (SOD), the FOD or SOD plus 370 g DM/d/head SP (FODs, SODs, respectively). The experimental diets were arranged in a 2 × 2 factorial design, with the fat sources as the first and SP as the second factor. The FO-supplemented diets had lower dry matter intake (DMI) and higher total tract digestibility than SO-supplemented diets (P

The aim of this study was to formulate and evaluate the characteristics and stability of astaxanthin-loaded nanostructured lipid carriers (ASX-NLCs). Four ASX-NLC formulas were prepared using cetyl palmitate and soybean oil in ratios of 100:0, 90:10, 80:20, and 70:30, respectively. ASX-NLCs were prepared by high shear homogenization method, then characterized and evaluated for stability after 30 days of storage at 40 °C and 75% RH. Differential scanning calorimetry (DSC) analysis of solid lipid bulk (cetyl palmitate) and ASX-NLCs was also carried out. The characterization results showed that all ASX-NLCs had pH values suitable for skin application, with no significant differences between the four formulas, even after storage. All freshly produced ASX-NLCs yielded nanometer-sized particles with homogenous size distributions and provided quite good entrapment efficiency. DSC analysis results exhibited lower lipid crystallinity in ASX-NLCs compared to cetyl palmitate. After storage, there was an increasing trend in particle size and polydispersity index, while the entrapment efficiency and antioxidant activity decreased. However, ASX-NLC with a cetyl palmitate and soybean oil ratio of 70:30 showed an insignificant decrease in entrapment efficiency and antioxidant activity, thereby it was considered to have better stability than the other formulas. [ABSTRACT FROM AUTHOR]

Shell‐derived materials are promising heterogeneous catalysts for biodiesel production due to their nontoxic and renewable nature, but they have the disadvantage of being highly leachable. To overcome this issue, Ca(OCH3)2 formed through the reaction of CaO with methanol, and supported in turn on Al2O3 is proposed as a catalytic system for the transesterification of fresh soybean oil and waste cooking oil (WCO). First, catalysts with several Al/Ca molar ratios (0.2, 0.5, and 0.8‐AC), as well as their precursors (CaO and Al2O3) alone, were tested at 60 °C, catalyst loading 6% wt, methanol‐to‐oil molar ratio (MOR) 10, for 1 h for fresh oil, and 3 h for WCO. The 0.2‐AC catalyst generated the highest biodiesel yield for both oils. The optimum operating conditions for WCO transesterification, determined by using a univariable approach, were 60 °C, 9 wt% catalyst loading, MOR of 12.5, and a reaction time of 3 h. These improved conditions led to yields higher than 90% for pure CaO and the 0.2, 0.5, and 0.8‐AC catalysts. The density, kinematic viscosity, and refractive index of the biodiesel obtained were measured. [ABSTRACT FROM AUTHOR]

ω-3 polyunsaturated fatty acids (PUFAs) are crucial for brain structure and function, especially docosahexaenoic acid (DHA). However, an excess of DHA may increase lipid peroxidation due to its high degree of unsaturation, particularly in tissues highly susceptible to oxidative stress, such as the brain. Therefore, this study evaluated the effects of 10 weeks of dietary supplementation with fish oil containing 80% DHA on oxidative stress and the modulation of the carbonylated proteome in both the cerebral cortex and cerebellum of male Sprague Dawley rats. The results were compared with those induced by oils with a lower degree of fat unsaturation (fish oil containing 25% DHA and 25% eicosapentaenoic acid, soybean oil containing 50% linoleic acid and coconut oil containing 90% saturated fat). The results demonstrated that fish oil containing 80% DHA significantly increased the ω3/ω6 ratio in both the cortex and cerebellum while stimulating antioxidant defense by enhancing the reduced glutathione amount and decreasing the carbonylation of specific proteins, mainly those involved in glycolysis and neurotransmission. The majority of sensitive proteins in both brain regions followed this carbonylation trend (in decreasing order): soybean > EPA/DHA 1:1 > coconut > 80% DHA. The results also indicated that the cerebellum is more responsive than the cortex to changes in the cellular redox environment induced by varying degrees of fat unsaturation. In conclusion, under healthy conditions, dietary supplementation with fish oils containing high DHA levels makes the brain more resilient to potential oxidative insults compared to oils with lower DHA content and a lower degree of fatty acid unsaturation. [ABSTRACT FROM AUTHOR]

Compared to traditional invasive techniques for wound closure, photocrosslinkable surgical adhesives with antibacterial properties offer significant advantages. These include ease of application, a controllable and efficient curing reaction, reduced risk of pain and infection, and effective leakage prevention. This study introduces a novel soybean oil-based nonisocyanate polyurethane prepolymer for use in such adhesives. The prepolymer, a hydroxyurethane functionalized with methacrylate and quaternary ammonium groups (QAs), was characterized through spectroscopic methods. The resulting UV-curable bioadhesives, synthesized via thiol-ene-methacrylate click-photopolymerization, incorporated limonene as a reactive diluent, a tetra-functional thiol crosslinker, and a photoinitiator. Elemental analysis confirmed the uniform distribution of QAs and sulfur atoms, indicating a homogeneous network structure, corroborated by high gel content values in both organic (84–92%) and aqueous media (91–99%), and a consistent tan δ peak as per DMTA. The optimized adhesives exhibited strong adhesion (up to 377 kPa) to gelatin sheets—a tissue-analogous substrate—and displayed suitable surface free energy (45–52 mN/m) as determined by contact angle measurements, suggesting favorable thermodynamic adhesion to skin. Additionally, the adhesives showed satisfactory cytocompatibility with L-929 fibroblast cells and antimicrobial efficacy against two gram-positive and gram-negative bacterial strains, indicating promising biological activity. [ABSTRACT FROM AUTHOR]

To address the increasing demand for sustainable biomaterials because of the excessive usage of fossil fuel and growing concerns with the environment, a novel biodegradable and environmentally friendly rigid polyurethane foam (RPUF) has been synthesized. These foams are derived from chemically modified soybean oil-based polyol (SBO-polyol) obtained through the formation of oxirane followed by the opening of the oxirane reaction. Polyurethane foam is generally used in construction, furniture, and automobile industries but is highly flammable and releases toxic fumes in combustion. In this study, an efficient synergistic effect of non-halogen flame-retardant (FR) melamine salt, 2-carboxyethyl(phenyl)phosphinic acid melamine salt (CMA) was synthesized from 2-carboxyethyl(phenyl)phosphinic acid (CEPP) and melamine (MA). Fourier transform infrared (FT-IR) spectroscopy characterized the chemical structure of CMA. Three different FRs, MA, melamine cyanurate (MC), and CMA were separately introduced in increasing quantities for the foam preparation to suppress the flame during combustion. The influence of these FRs on the thermal properties, flame retardancy, morphology, physical, and mechanical properties of the prepared RPUFs was studied through closed cell content, apparent density, compression test, horizontal burning test, thermogravimetric analysis (TGA), and gel permeation chromatography (GPC), scanning electron microscopy (SEM). The addition of 28.56 wt% of MA (MA-15), MC (MC-15), and CMA (CMA-15) presented a burning time of 10.1 s with weight loss of 5.34% and 28.4 s with 13.02% and 15.25 s with 8%, respectively. The findings demonstrated that all three FRs gave RPUF good FR properties. [ABSTRACT FROM AUTHOR]

The use of natural fibers has been suggested by researchers for the purpose of promoting environmental sustainability. In this work, hybrid composites made of coir and banana fibers were fabricated by using both green resin and epoxy resin in the preparation of composites. Soybean oil is used in this work as the eco‐friendly resin. To determine the mechanical characteristics of the composites, a number of experiments were carried out including tensile, compression, hardness and impact tests. In addition, testing was done on the sound absorption qualities. Composites composed of green resins exhibit superior environmentally friendly characteristics and mechanical robustness in comparison to composites based on epoxy resin. The tensile strength of the hybrid composites exhibited superior performance compared to other hybrid composites. The additional mechanical qualities of the hybrid composites are noteworthy and serve as a driving force to pursue the development of specific applications. Highlights: Hybrid composites exhibit superior mechanical properties.The use of natural resin‐based composites is limited.There is a potential scope for developing hybrid composites using natural fibers and resin for acoustic applications. [ABSTRACT FROM AUTHOR]

The acrylation degree of vegetable oils plays a relevant role in determining the mechanical properties of the resulting polymers. Both epoxide and acrylate functionalities participate in polymerization reactions, producing various types of chemical bonds in the polymer network, which contribute to specific properties such as molecular size distribution, crosslinking degree, and glass transition temperature (Tg). The accurate identification of epoxide and acrylated groups in triglyceride molecules helps to predict their behavior during the polymerization process. A methodology based on analytical spectrometric techniques, such as direct infusion, mass spectrometry with electrospray ionization, and ultra-high-performance liquid chromatography, is used in combination with FTIR and 1H NMR to characterize the epoxy and acrylic functionalities in the fatty chains with different numbers of carbon atoms of partially acrylated triglycerides obtained by a non-catalytic reaction. [ABSTRACT FROM AUTHOR]

As an emerging two‐dimensional material, black phosphorus (BP) has excellent tribological properties, but the poor dispersion of BP in oil inhibits its application in friction to some extent. Surface modification is one of the effective methods to solve the dispersibility of BP, and the use of nano‐Fe3O4 dotted on the surface of BP improves the dispersion stability of BP in soybean from 3 days to about 15 days. Compared with pure soybean oil, friction coefficient and wear rate of the addition of 0.12 wt% BP/Fe3O4 are reduced 65% and 78%, respectively. To elucidate the excellent tribological mechanisms of BP/Fe3O4 as additives in soybean oil, the compositional and structural characterisation of the abrasion mark surface was studied accordingly. On the one hand, soybean oil reacts with BP/Fe3O4 to form a composite tribo‐film during the scraping process. This tribo‐film composed of amorphous carbon, iron oxide and phosphorus oxide nitrides prevents direct contact between the sliding interfaces. On the other hand, BP and Fe3O4 nanoparticles form a mechanical rollerball structure, which can further reduce interfacial friction and wear through synergistic lubrication. The results provide new insights into the design of additives in biomass lubricating oils and propose new application prospects for BP in the field of lubricating additives. [ABSTRACT FROM AUTHOR]

This article presents the production and performance analysis of biodiesel from a blended oil comprising 20% soybean oil and 80% rice bran oil. The production process utilizes transesterification with methanol and NaOH, and the biodiesel synthesis time is optimized using a homogenizer. The biodiesel is tested on a four-stroke single-cylinder internal combustion (IC) engine, where key parameters such as brake thermal efficiency and specific fuel consumption are measured. The study compares the performance of biodiesel derived from the blended oil with biodiesel produced from pure soybean oil. Experimental results reveal that the biodiesel from the blended oil offers higher efficiency. Specifically, the brake thermal efficiency of the blended biodiesel increases with load, achieving values of 7.4%, 14.3%, 21.9%, and 23.6% at loads of 1kg, 2kg, 3kg, and 4kg, respectively. In terms of brake-specific fuel consumption, the blended biodiesel showed values of 2.425, 1.536, 1.168, and 0.989 kg/kW-hr for the same loads. The time required to consume 5 ml of blended biodiesel at a constant 1500 RPM decreases as the load increases, with times of 38.50, 35.72, 28.19, 24.72, and 21.88 seconds for loads of 1 kg, 2 kg, 3 kg, and 4 kg, respectively. The overall findings suggest that biodiesel from the rice bran and soybean oil blend is more efficient than pure soybean oil biodiesel, indicating its potential for more effective use in IC engines. [ABSTRACT FROM AUTHOR]

Today, around the world, there is huge demand for natural materials that are biodegradable and possess suitable properties. Natural fibers reveal distinct aspects like the combination of good mechanical and thermal properties that allow these types of materials to be used for different applications. However, fibers alone cannot meet the required expectations; design modifications and a wide variety of combinations must be synthesized and evaluated. It is of great importance to research and develop materials that are bio-degradable and widely available. The combination of PLA+, a bio-based polymer, with natural fillers like sawdust and soybean oil offers a novel way to create sustainable composites. It reduces the reliance on petrochemical-based plastics while enhancing the material's properties using renewable resources. This study explores the creation of continuous hexagonal-shaped 3D-printed PLA+ samples and the application of post-print fillers, specifically sawdust and soybean oil. PLA+ is recognized for its eco-friendliness and low carbon footprint, and incorporating a hexagonal pattern into the 3D-printed PLA+ enhances its structural strength while maintaining its density. The addition of fillers is crucial for reducing shrinkage and improving binding capabilities, addressing some of PLA+'s inherent challenges and enhancing its load-bearing capacity and performance at elevated temperatures. Additionally, this study examines the impact of varying filler percentages and pattern orientations on the mechanical properties of the samples, which were printed with an infill design. [ABSTRACT FROM AUTHOR]

This study was carried out to enrich soybean oil (SBO) with carotenoids from Gac (Momordica cochinchinensis Spreng.) powder using ohmic heating-assisted ultrasound extraction (OH-AU). The oxidative stability during the 28-day storage period was also evaluated. The moisture content of the powder Gac powder samples was adjusted by adding deionized water to achieve a 30% wet basis, and then they were ohmically heated at two levels of electric field strength (E) (E = 100 and 200 V/cm) or microwave-heated at 300 and 600 Watts before ultrasonic extraction using SBO as a solvent. Commercial SBO and ultrasound extractions were used as controls. Maximum concentrations of β-carotene (46.27 µg/g) and lycopene (35.47 µg/g) were observed in the enriched oil from OH-AU (E = 200 V/cm), while the oil extracted by ultrasound without OH had the lowest concentration. The enriched oils from OH-AU at E = 100 and 200 V/cm showed lower L* and higher b* values. The antioxidant activity of OH-AU-enriched oil evaluated by DPPH scavenging activity and FRAP was also stronger than enriched oils without OH and SBO. The enriched oils from OH-AU showed higher oxidative stability with a lower peroxide value (PV) and thiobarbituric acid (TBA) over 28 days of storage. The FFA concentrations of enriched oils were less than 5% by the end of the storage period. This suggests that applying OH could assist the ultrasound extraction in enriching Gac carotenoids in vegetable oil. It was an effective alternative technique for preparing a functional oil with high oxidative stability. [ABSTRACT FROM AUTHOR]

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Phytosterols in vegetable oils have gained attention for their nutritional benefits in foods and food supplements. However, the use of vegetable oils in emulsions for infant formulas and parenteral nutrition has raised some concerns, as phytosterols may contribute to phytosterolemia in the case of infant formulas and, in a second scenario, to parenteral nutrition-associated liver disease. The present study proposes removing phytosterols from soybean oil using a synthetic amorphous silica Trisyl® (E551) as an adsorbent material. The process is simple and involves stirring the oil at a high temperature under vacuum conditions followed by filtration to remove the adsorbent. A rotational factorial design of experiments, considering the adsorbent/oil ratio, temperature, and time was carried out to determine the optimal conditions. Additionally, the effects on tocopherols levels and formation of trans fatty acids were explored. The total sterol content in the initial refined soybean oil was 2540 mg/kg, with 32% in ester form (813 mg/kg). The treatments effectively reduced the sterol concentration, achieving a reduction of nearly 70% when 10% Trisyl®, 140 °C, and a 90-min treatment were applied. Under these conditions, nearly 80% of the oil was recovered. Campesterol and stigmasterol levels were almost halved. Tocopherol losses were found to be below 20%. Thermal degradation, as analyzed by triacylglycerol polymers and trans fatty acids, was not observed in the treatments. [ABSTRACT FROM AUTHOR]

Fat supplements are well known for their multiple beneficial effects on ruminant health, reproduction and productivity, and as a source for certain bioactive compounds in ruminant products. On the other hand, numerous phytochemicals have demonstrated the potential to improve rumen fermentation through modifying the volatile fatty acid (VFA) pattern to favour those with greater energy efficiency, boosting microbial protein synthesis, and decreasing methane emission and ruminal ammonia concentration. Savory is an aromatic plant rich in various phytochemicals (mainly carvacrol and flavonoids) that can alter ruminal metabolism of dietary fatty acids, potentially increasing the production of some bioactive compounds such as conjugated linoleic acids (CLAs). This study aimed to investigate combined effects of oil type (fish oil (FO) versus soybean oil (SO)) and the inclusion of savory (Satureja khuzistanica) plant (SP) in the diet on total tract digestibility of nutrients, rumen fermentation, milk yield and milk fatty acid profile in dairy cattle. Eight multiparous lactating Holstein cows were used in a replicated 4 × 4 Latin square design experiment with four diets and four 21-d periods. During each experimental period consisted of 14 days of adaptation and a 7-day sampling period, cows were randomly assigned to one of the four dietary treatments: the diet supplemented with 2% (DM basis) fish oil (FOD) or soybean oil (SOD), the FOD or SOD plus 370 g DM/d/head SP (FODs, SODs, respectively). The experimental diets were arranged in a 2 × 2 factorial design, with the fat sources as the first and SP as the second factor. The FO-supplemented diets had lower dry matter intake (DMI) and higher total tract digestibility than SO-supplemented diets (P < 0.05), and including SP in the diet improved total tract digestibility of dry matter (DM), organic matter (OM), ether extract (EE), and non-fibrous carbohydrates (NFC) (P < 0.05) without negatively affecting DMI. Rumen pH was lower with SO than with FO diets (P < 0.01) and increased with SP inclusion in the diet (P < 0.05). Total protozoa count and ruminal ammonia concentration decreased, and the branched-chain VFA (BCVFA) proportion increased with SP inclusion in the diet (P < 0.05). Milk production, as well as the concentration and yield of milk components (except lactose concentration) were higher with SO than with FO diets (P < 0.05), but these variables remained unaffected by SP. The milk concentrations of both non-esterified fatty acids (NEFA) and beta-hydroxybutyrate (BHB) were lower with SO compared to FO diets, and these variables were reduced by SP (P < 0.01). The proportions of both mono- and polyunsaturated FA (MUFA and PUFA, respectively) in milk were higher with FO than with SO diets (P < 0.01), and their proportions increased by SP at the expense of saturated FA (SFA) (P < 0.01). Including SP in the diet increased the proportions of all the milk n-3 FA (C18:3c, C20:5, and C22:6) by 21%, 40%, and 97%, respectively, and those of conjugated linoleic acids (C18:2 (c9,t11-CLA) and C18:2 (t10,c12-CLA)) by 23% and 62%, respectively. There was no interaction between oil type and SP for the assessed variables. Fish oil, despite reducing milk production and milk components, was more effective than soybean oil in enriching milk with healthy FA. These findings also show promise for SP as a feed additive with the potential to improve total tract digestibility, rumen fermentation and milk FA composition. [ABSTRACT FROM AUTHOR]

This study evaluated the possibility of waste soybean oil (WSO) as a substrate for medium-co-long chain length (mcl-co-lcl) polyhydroxyalkanoate (PHA). In addition, the antibacterial activities of mcl-co-lcl PHA supplemented with lime essential oil were also demonstrated. High polyunsaturated fatty acids (PUFAs) (53.9%) with linoleic acid as the major fatty acid were observed in WSO. Therefore, WSO was used as a substrate for PHA production by Enterobacter TS1L. PHA production was compared between batch and fed-batch fermentation. The highest biomass (5.0 ± 0.2 g/L) and PHA (54.00% CDM, 0.028 g/L·h) were obtained at cycle 3 of cyclic fed-batch fermentation (CFBF). The biomass and PHA from CFBF were 1.8- and 1.9-fold higher than those from batch fermentation. Afterward, the polymer was characterized to be mcl-co-lcl PHA containing 3-hydroxytetradecanoate (3HTD), 3-hydroxyhexadecanoate (3HHD), and 3-hydroxyoctadecanoate (3HOD) at molar compositions of 32.44, 23.90, and 43.66, respectively. Thereafter, a film containing mcl-co-lcl PHA and lime oil was formed by casting solution, and its antibacterial activity was determined. Oil-containing PHA film exhibited a good ability against both Staphylococcus aureus and Escherichia coli. This study revealed the possibility of using WSO as a low-cost substrate to produce mcl-co-lcl PHA. In addition, the application of mcl-co-lcl PHA containing high 3HOD as an antibacterial agent has never been reported thus far. [ABSTRACT FROM AUTHOR]

In order to compensate for the reduction of fossil energy resources and to develop sustainable energy types and to help the environmental pollution crisis, biodiesel is introduced as one of the types of renewable biofuels that can be easily prepared and can be used without any changes in diesel engines. Biodiesel is one of the main biofuels that is usually produced from the catalyzed transesterification of fatty acids. Among the existing catalysts, zinc oxide (ZnO) is one of the best intermediate metal oxides that can be used in the production of biodiesel due to its high catalytic activity and environmental friendliness. In this research, different morphologies of zinc oxide in the form of nanoparticles (NPs), nanorods (NRs) and nanoflowers (NFs) were prepared as catalyst for transesterification of soybean oil with methanol were used. The reaction was carried out under optimal conditions at 65℃ with 6 wt% catalyst amounts at 30:1 methanol/oil molar ratio for 180 min, gave the biodiesel production conversion for NPs was 96.5% due to the largest surface area (10.61 m2/g) based on Brunauer Emmett Teller (BET) analysis, while the for NRs was 87.2% and for NFs was 44.6%. The catalyst is easily recovered after the reaction and reused, and after six stages the production conversion is reduced to 88.9%. Also, chromium (Cr) was doped with NPs and in the previous optimal conditions but in less reaction time (90 min), the conversion of 99.3% was obtained, and after six cycles of reuse of the catalyst, the production conversion is reduced to 91%. The prepared nanocatalysts were characterized using Fouier Transform Infrared (FTIR), X-Ray Diffractions (XRD), Energy Dispersive X-Ray (EDX), Scanning Electron Microscope (SEM), Inductively Coupled Plasma (ICP) and BET analyses. The Biodiesel production conversion was confirmed using Gas Chromatography (GC) analysis and the presence of methyl esters was confirmed using Gas Chromatography-Mass Spectrometry (GC–MS) analysis. [ABSTRACT FROM AUTHOR]

This study was conducted to enhancement the oxidative stability of soybean and sunflower oil by blending them with palm oil to form binary blends. The physical and chemical properties, refractive index, free fatty acids, peroxide value, iodine value, saponification value and fatty acid composition of palm oil and its blends with soybean and sunflower oils were determined to evaluate oils and their blends. Results revealed that palm oil was the best oil compared to sunflower oil and soybean oil, as well as blending of palm oil with sunflower oil and soybean oil to form binary blends led to the enhancement of oxidative stability of sunflower and soybean oil. The best binary blend was the blend which consists of 50% palm oil: 50% soybean. [ABSTRACT FROM AUTHOR]

The demand for bio-based lubricants has grown considerably in recent years due to increasing environmental awareness among the public, governments, and industries. In this study, soybean-oil-based samples were synthesized via reactions of hydrolysis (FFA, yield > 93% wt.), esterification (BL1, yield > 92% wt.), epoxidation (BL2, yield > 91% wt.), and oxirane ring opening (BLOR, yield > 93% wt.), using a long chain alcohol (2-ethylhexanol). The obtained BL1 and BLOR samples were further subjected to tribological testing in the four-ball configuration. The friction coefficients of the BL1 and BLOR samples were evaluated using speed ramps at different loading forces and temperatures. A hydrotreated mineral oil (HMO) sample was used as a reference to evaluate the lubrication performance of the synthesized bio-based samples. The results indicated that these BL1 and BLOR samples had lower friction coefficients than HMO at all assessed sliding speeds, even with increasing load force and temperature. In the test to evaluate the wear, the samples of BL1 and BLOR presented coefficient of friction smaller than HMO in the order of 31.7% and 46.0%, respectively. Furthermore, an assessment of the wear morphologies indicated that the BL1 and BLOR samples yielded smoother surfaces with shallower grooves than the hydrotreated mineral oil sample. Among the studied bio-based lubricants, BLOR yielded the lowest friction coefficients, wear scar diameter, and surface ripples. The tribology resulting from BL1 and BLOR infers that these biolubricants have potential for applications in mechanical systems. [ABSTRACT FROM AUTHOR]