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The present study aimed to evaluate the antioxidant capacity of ethanolic extracts from post-harvest sunflower and maize stalk residues, and their impact on the chemical composition, physicochemical parameters, lipid oxidative stability, microbiological properties, and sensory characteristics of pork liver pâtés over a 90-day storage period. Four formulations were prepared: a control group (CON), a batch with butylated hydroxytoluene as a synthetic antioxidant (BHT), 1% ethanolic extract from sunflower residues (SSRE), and 1% ethanolic extract from maize residues (MSRE). The MSRE had a higher total phenol content and showed better antioxidant activity relative to the SSRE (p < 0.01). The addition of SSRE decreased the lightness and increased the redness in the pork liver pâtés, with these pâtés showing the highest total color difference compared to the control (p < 0.01). The crop extracts increased the n-6 and total PUFA contents in pâtés and improved the PUFA/SFA ratio (p < 0.01). Formulations containing crop residue extracts showed higher TBARs and POV values than the control and BHT group (p < 0.01), indicating a pro-oxidant effect and accelerated lipid oxidation in pâtés during storage. As far as microbiological quality, the presence of crop residue extracts decreased the total viable count, lactic acid bacteria, and psychotropic aerobic bacteria (p < 0.01). The incorporation of crop extracts in the pork pâtés impaired their sensory quality, particularly color, odor, aroma, and flavor, and decreased their overall acceptability. These results indicated that, while the crop residue extracts were not as effective as synthetic antioxidants in preserving the lipid stability of pâtés, they demonstrated potential for enhancing the microbial quality of this type of meat product. [ABSTRACT FROM AUTHOR]

Power ultrasound and salt reduction effects on meat emulsions' physicochemical and rheological properties were determined. Therefore, meat emulsions with different NaCl concentrations (1, 1.5, 2, and 2.5%) were treated in an ultrasonic bath (40 kHz, 200 W, & 9.34 W/cm2) at different times (0, 15, and 45 min). Results showed that salt reduction and ultrasound time significantly (p < 0.05) affected the cooking loss, water holding capacity, water activity, pH, color, hardness, viscosity, storage modulus (G′), loss modulus (G″), and phase angle δ. Meat emulsions with low salt content (1 and 1.5% NaCl) showed significantly higher values of cooking loss than standard emulsions (2.5% NaCl), while ultrasound duration of 15 min reduced the cooking loss (12 to 27%). Hardness, color, pH, and water activity (aw) decreased with salt reduction. Ultrasounds increased the hardness, viscosity, G′, and G′′ values in reduced‐salt meat. The experimental data of apparent viscosity were properly fitted to the mathematical model of Ostwald‐de‐Waele. Ultrasound increased consistency (k) and decreased flow behavior index (n) in emulsions with 1.5 to 2.5% NaCl. Ultrasound at 15 min induced gelation in emulsions with 1.5 and 2.0% NaCl (40 and 20% NaCl reduction). The formulation with 2.0% NaCl was found to be the maximum concentration that did not sacrifice meat emulsion quality. When combined with 15 min of ultrasound, this formulation yielded results comparable to the standard formulation. Practical Application: Results contribute to developing reduced‐salt meat emulsions using power ultrasounds. Therefore, using ultrasounds allows for a 20% reduction in salt content while maintaining the quality of the meat emulsion. [ABSTRACT FROM AUTHOR]

The present study aimed to evaluate the antioxidant capacity of ethanolic extracts from post-harvest sunflower and maize stalk residues, and their impact on the chemical composition, physicochemical parameters, lipid oxidative stability, microbiological properties, and sensory characteristics of pork liver pâtés over a 90-day storage period. Four formulations were prepared: a control group (CON), a batch with butylated hydroxytoluene as a synthetic antioxidant (BHT), 1% ethanolic extract from sunflower residues (SSRE), and 1% ethanolic extract from maize residues (MSRE). The MSRE had a higher total phenol content and showed better antioxidant activity relative to the SSRE (p < 0.01). The addition of SSRE decreased the lightness and increased the redness in the pork liver pâtés, with these pâtés showing the highest total color difference compared to the control (p < 0.01). The crop extracts increased the n-6 and total PUFA contents in pâtés and improved the PUFA/SFA ratio (p < 0.01). Formulations containing crop residue extracts showed higher TBARs and POV values than the control and BHT group (p < 0.01), indicating a pro-oxidant effect and accelerated lipid oxidation in pâtés during storage. As far as microbiological quality, the presence of crop residue extracts decreased the total viable count, lactic acid bacteria, and psychotropic aerobic bacteria (p < 0.01). The incorporation of crop extracts in the pork pâtés impaired their sensory quality, particularly color, odor, aroma, and flavor, and decreased their overall acceptability. These results indicated that, while the crop residue extracts were not as effective as synthetic antioxidants in preserving the lipid stability of pâtés, they demonstrated potential for enhancing the microbial quality of this type of meat product.

This study was conducted to evaluate the effect of adding eggshell membrane (ESM), a by-product of the chicken egg processing industry, to emulsified meat models with different NaCl concentrations. The aim was to examine if ESM could facilitate a reduction in the amount of NaCl added to this type of product. The effects of ESM addition were investigated in terms of cooking loss, water distribution, color, and texture properties using a simplified meat emulsion model with no other additives than ESM. Emulsified meat samples were made with three different NaCl concentrations (0.5, 0.1, 1.5% w/w), without and with three levels of ESM (0.5, 1.0, 1.5% w/w). Addition of ESM reduced cooking loss (CL), improved texture, and increased redness. Effects of ESM were explained by structural changes in the protein matrix, as shown by two different histological methods. The addition of ESM explained 86% of the variation in low-field Nuclear Magnetic Resonance (LF-NMR) T2 relaxation times in uncooked samples, while 97% of the variation in cooked samples was explained by the NaCl concentration. Fourier transform Infrared (FTIR) micro-spectroscopic measurements revealed that samples supplemented with ESM had a higher proportion of α-helical structures and reduced amount of protein ß-sheet aggregation in samples with 1.0 and 1.5% NaCl. It was shown that ESM increased the pH of the emulsified meat, and it was, therefore suggested that increased negative repulsion effects had a positive heat stabilizing effect on the protein network. The fact that the cooked samples were redder was probably related to the antioxidant effect of ESM which was measured as MDA (malondialdehyde) equivalents after in vitro digestion of the samples. ESM can thus help reduce the salt content in sausages while ESM also has a positive antioxidant effect improving color.

Six meat emulsion treatments were manufactured, depending on the addition of Trigonella seed powder. Meat emulsions were prepared with starch as control treatment, Trigonella seed powder (Tfg) or defatted Trigonella seed powder (Dtfg) in two percentages 2% and 4%. Cooking losses, lipid oxidation degree, meat emulsion stability through measurement of total released fluid, water released, fat released, TPA attributes and color parameters were evaluated. Cooking loss and fat, fluid releases were lower in Tfg and Dtfg samples related to Starch. Also, lipid oxidation was higher (P < 0,05) in Tfg samples than Dtfg or Starch. Hardness, chewiness and gumminess were lower (P < 0,05) in Tfg and Dtfg samples than Starch samples. The a* values in samples with starch were reduced rapidly (P < 0,05) than Tfg and Dtfg values during preservation. These results show that Trigonella Foenum-Graecum seed powder is an efficient candidate for improving quality of emulsion type meat products with vegetable oils as animal fat replacers. [ABSTRACT FROM AUTHOR]

The effect of the addition of three types of tropical edible seaweeds, Kappaphycus alvarezii (KA), Sargassum polycystum (SP), and Caulerpa lentilifira (CL), on sausages were studied. Nine sausage formulations with three levels of inclusion (2%, 4%, and 6%) of each seaweed were prepared, analysed, and compared with the control sample (without seaweed) in terms of their physicochemical properties, total phenolic content, and lipid oxidation. The modified sausages had low moisture and fat content (p < 0.05) but high ash and dietary fiber content (p < 0.05) compared to the control sausage. The addition of seaweed powder changed the texture of the sausages, mainly its hardness and chewiness (p < 0.05), but no significant difference in cohesiveness and springiness was found (p < 0.05). The modified sausages were shown to have high water holding capacities and cooking yields. The different types of seaweed modified the colour of the chicken sausages differently. In general, the L* (brightness) and b* (yellowness) values was low for all sausage samples containing seaweed powder (p < 0.05), while the a* (redness) value increased with the addition of the KA and SP seaweed powder but decreased for the sausage sample with added CL seaweed powder (p < 0.05). Moreover, the modified sausages have higher total phenolic contents and high antioxidant capacities, which contributed to slowing the oxidation of lipid in sausages during storage (p < 0.05). Sensory evaluation showed that the panellists found up to 4% of KA and 2% of SP to be acceptable. Overall, the seaweeds, especially KA and SP, could potentially be developed as excellent additives for the manufacture of highly technological high-quality meat products. [ABSTRACT FROM AUTHOR]

Meat products are widely consumed worldwide and, as a result, they may be an exciting supplier of health benefits due to the need for better formulations, such as reduced fat and increased fibre in processed meats. This study was carried out to determine how the banana peel (BP) flour of Saba (Musa balbisiana) and Berangan (Musa acuminata) affect the functional properties and sensory acceptance of chicken sausage. Berangan BPs showed better water- and oil-holding capacity than Saba BP flour. Conversely, Saba BP flour exhibited better swelling power, but was less soluble than Berangan BP flour. Sausages containing high BPs, especially Saba banana, had a more rigid texture, a high storage modulus, and a darker colour. The ability to retain more water in Berangan peel positively affected the sausage's textural and rheological properties. With 2%, chicken sausage received the highest sensory score, with Saba BP-containing sausage following closely behind. However, adding >2% BP of both varieties negatively affected the sausage texture and colour, resulting in reduced sensory acceptance. Thus, the BP from Saba and Berangan bananas showed promise as a potential value-adding ingredient in the formulation of functional meat products. In addition, it has potential health benefits, such as increased dietary fibre. [ABSTRACT FROM AUTHOR]

The aim of this study was to observe the effects of the wet aging time of beef on the rheological properties of O/W model system meat emulsions. In addition, texture parameters (TPA) of the gels and the color analysis of the meat emulsions were performed to find a possible relationship between dynamic rheological data, with storage modulus (G') and loss modulus (G''), TPA parameters of the gels and color parameters of emulsions obtained from wet aged meat, at different time intervals (2, 7, 12, 17, 21 days). The Ostwald-de Waele model was used to describe the flow properties of meat emulsions. All studied emulsions exhibited non-Newtonian, shear thinning behavior since apparent viscosity decreased with increasing shear rate. Correlations between rheological properties, color of meat emulsions and TPA parameters of gels have been observed.

Meat products are widely consumed worldwide and, as a result, they may be an exciting supplier of health benefits due to the need for better formulations, such as reduced fat and increased fibre in processed meats. This study was carried out to determine how the banana peel (BP) flour of Saba (Musa balbisiana) and Berangan (Musa acuminata) affect the functional properties and sensory acceptance of chicken sausage. Berangan BPs showed better water- and oil-holding capacity than Saba BP flour. Conversely, Saba BP flour exhibited better swelling power, but was less soluble than Berangan BP flour. Sausages containing high BPs, especially Saba banana, had a more rigid texture, a high storage modulus, and a darker colour. The ability to retain more water in Berangan peel positively affected the sausage’s textural and rheological properties. With 2%, chicken sausage received the highest sensory score, with Saba BP-containing sausage following closely behind. However, adding >2% BP of both varieties negatively affected the sausage texture and colour, resulting in reduced sensory acceptance. Thus, the BP from Saba and Berangan bananas showed promise as a potential value-adding ingredient in the formulation of functional meat products. In addition, it has potential health benefits, such as increased dietary fibre.

The effect of the addition of three types of tropical edible seaweeds, Kappaphycus alvarezii (KA), Sargassum polycystum (SP), and Caulerpa lentilifira (CL), on sausages were studied. Nine sausage formulations with three levels of inclusion (2%, 4%, and 6%) of each seaweed were prepared, analysed, and compared with the control sample (without seaweed) in terms of their physicochemical properties, total phenolic content, and lipid oxidation. The modified sausages had low moisture and fat content (p < 0.05) but high ash and dietary fiber content (p < 0.05) compared to the control sausage. The addition of seaweed powder changed the texture of the sausages, mainly its hardness and chewiness (p < 0.05), but no significant difference in cohesiveness and springiness was found (p < 0.05). The modified sausages were shown to have high water holding capacities and cooking yields. The different types of seaweed modified the colour of the chicken sausages differently. In general, the L* (brightness) and b* (yellowness) values was low for all sausage samples containing seaweed powder (p < 0.05), while the a* (redness) value increased with the addition of the KA and SP seaweed powder but decreased for the sausage sample with added CL seaweed powder (p < 0.05). Moreover, the modified sausages have higher total phenolic contents and high antioxidant capacities, which contributed to slowing the oxidation of lipid in sausages during storage (p < 0.05). Sensory evaluation showed that the panellists found up to 4% of KA and 2% of SP to be acceptable. Overall, the seaweeds, especially KA and SP, could potentially be developed as excellent additives for the manufacture of highly technological high-quality meat products.

The effect of ultrasound at different times and temperatures on pH, emulsion stability and texture of buffalo meat emulsions was determined. Emulsions were prepared, treated with ultrasound at 37 kHz for 3, 5 and 10 min, blanched, vacuum packed and stored at 4°C. Emulsion quality was evaluated by measuring pH, emulsion stability and a texture profile analysis. The pH of the emulsion prepared with buffalo meat decreases when it is treated with ultrasound at 3 and 5 min while at 10 min it does not present a significant difference with the control (samples not treated with ultrasound). The stability of the emulsion increases with ultrasound treatment. Hardness and chewiness decreased significantly (significance of 5%) with respect to control, while elasticity and cohesiveness were not affected by treatment. [ABSTRACT FROM AUTHOR]

Mushrooms are considered to be a next-generation health food due to their rich protein content with high biological value, fiber and bioactive compounds. Utilization of the protein and fiber contents of mushroom for the production of functional meat products with better emulsion characteristics was the aim of this study. Therefore, the influence of mushroom powder (MP) addition (0–3%) on the properties of a model meat emulsion was investigated. Dynamic and creep-recovery analyses were conducted to reveal the effect of MP on emulsion stability by evaluating internal structure variations. Samples with 2% MP added exhibited higher resistance to applied stress and higher gel-like behavior, complex viscosity, pseudoplastic behavior, heat resistance and emulsion strength compared with other samples. Modifications of the chemical structure of emulsions with MP included were confirmed by examination of Fourier-transform infrared spectra. The addition of 2% MP provided a higher protein adsorption at the lipid interface, resulting in a well-ordered emulsion structure. As a final product, cooked meat emulsion exhibited improvement in textural properties with the addition of 2% MP. Therefore, supplementation of emulsions with mushroom powder may help to obtain a functional product with better characteristics. [ABSTRACT FROM AUTHOR]

The effects of β-glucans (βG) in beef emulsions with carrageenan and starch were evaluated using an optimal mixture modeling system. The best mathematical models to describe the cooking loss, color, and textural profile analysis (TPA) were selected and optimized. The cubic models were better to describe the cooking loss, color, and TPA parameters, with the exception of springiness. Emulsions with greater levels of βG and starch had less cooking loss (<1%), intermediate L* (>54 and <62), and greater hardness, cohesiveness and springiness values. Subsequently, during the optimization phase, the use of carrageenan was eliminated. The optimized emulsion contained 3.13 ± 0.11% βG, which could cover the intake daily of βG recommendations. However, the hardness of the optimized emulsion was greater (60,224 ± 1025 N) than expected. The optimized emulsion had a homogeneous structure and normal thermal behavior by DSC and allowed for the manufacture of products with high amounts of βG and desired functional attributes. [ABSTRACT FROM AUTHOR]

The aim of the study was to produce chicken breast meat emulsions with the addition of diff erent hydrocolloids that would have comparable, or better, textural properties to those produced with phosphates (E 450-452). We prepared 10 emulsions from mechanically separated chicken breast meat (as three experimental repetitions) with the additions of: phosphates (control; 0.7%), and three diff erent levels of one each of carrageenan, xanthan (these additives were used at 0.5%, 0.8% and 1% levels) or potato starch (1%, 1.5%, 2%). Instrumental measurements of colour (CIE L*, a*, b*) and texture (texture profi le analysis, stress relaxation tests) were performed, along with evaluation of the sensory attributes (descriptive analysis). These chicken breast meat emulsions with diff erent hydrocolloids signifi cantly diff ered in their instrumentally measured colour values and most texture parameters (hardness, cohesiveness, gumminess, chewiness, resilience, F0, Y30), and in some of the sensory attributes (colour, fi rmness, aroma). The increases in carrageenan and potato starch additions aff ected some of the measured colour values and the sensory attributes, although the measured texture parameters were not aff ected. The increases in xanthan addition showed changes in the colour, texture and sensory profi les. Those chicken breast meat emulsions with phosphate (0.7%), carrageenan (0.5%, 0.8%) and potato starch (2.0%) were the most similar in colour, texture and aroma. Those with potato starch showed non-signifi cant trends for improved attributes compared to the control group, due to their intense aroma. [ABSTRACT FROM AUTHOR]

The objective of this work was to introduce nanofibrillated cellulose (NFC) in the formulation of cooked emulsion-type sausages with the aim of assessing its feasibility to assume the role or compensate the lack of some conventional functional ingredients, such as polyphosphates, maize starch, and sodium caseinate. For this aim, sausages based on standard commercial formula (control) including all three ingredients and sausages containing 0.5% NFC instead of phosphates and starch (NFC-1) or instead of phosphates, starch, and sodium caseinate (NFC-2) were produced and characterized. In NFC-1 samples, 0.5% nanofibrillated cellulose succeeds in replacing 0.5% polyphosphates and 1% starch without significantly altering the composition, nor negatively affecting the fat and water retention properties, neither of the raw batter or the cooked sausages. However, less stable meat batters and sausages with significantly reduced water-holding capacity were obtained when 1.5% sodium caseinate, in addition to phosphates and starch, was also removed (NFC-2). Nevertheless, results were hopeful enough to encourage further optimization studies, using several NFC concentrations and/or cellulose with different nanofibrillation degrees, in order to clarify whether it is possible to successfully replace also non-meat proteins in cooked emulsion-type sausages. [ABSTRACT FROM AUTHOR]

The dose-dependent effects of (−)-epigallocatechin-3-gallate (EGCG; at 0, 50, 100, 200, 500, and 1000 mg/L) on the physical, chemical, and oxidative stability of porcine myofibrillar protein (MP)–soybean oil emulsion systems were investigated. The results showed EGCG at all levels effectively suppressed lipid oxidation in MP emulsion composite gels during the entire chill storage (at 4 °C for 0, 3, or 7 days). The incorporation of EGCG at higher concentrations (>100 mg/L) promoted the loss of sulfhydryls, reduction of surface hydrophobicity, and aggregation and cross-linking of MP. As a result, high concentrations of EGCG (500 and 1000 mg/L) hampered emulsification and gel formation of MP. However, EGCG at lower concentrations (50–200 mg/L) improved the oxidative stability of meat emulsions without jeopardizing the textural stability. [ABSTRACT FROM AUTHOR]

This paper examines the effect of emulsion gels (EG) prepared with chia (CEG) and oats (OEG) used as animal fat replacers in reduced-fat fresh sausages ( longaniza ) (LRF) during chilled storage. Reduced-fat samples were reformulated with CEG and OEG, (LRF/CEG and LRF/OEG respectively). Normal (LNF/P) and reduced-fat (LRF/P) (all-pork-fat) sausages were used as controls. Nutritional composition and microbiological, technological and sensory characteristics of sausages were evaluated. The presence of an EG affected ( P < 0.05) the concentrations of some minerals and amino acids in sausages. CEG improved MUFA and PUFA contents. Cooking loss was lower ( P < 0.05) in LRF/CEG and LRF/OEG than in the controls. Of all the reduced-fat samples, Kramer shear force values (KSF) were highest ( P < 0.05) in the ones containing an EG. KSF generally increased ( P < 0.05) over storage in all samples. The microbial count was significantly affected by the use of CEG. Sensory properties were affected by the incorporation of an EG, but all sausages were judged acceptable. [ABSTRACT FROM AUTHOR]

The physicochemical, oxidative, and sensory properties were determined for low fat meat emulsions containing varying levels of guar gum (0.5, 1.0, and 1.5%) as a fat substitute. Reduction of fat and incorporation of guar gum resulted in higher emulsion stability and cooking yield but lower penetration force. Color evaluation revealed that low fat formulations had significantly lower lightness and higher redness values than high fat control formulation ( p < .05). However nonsignificant difference was observed in yellowness values ( p > .05). pH value was higher in low-fat formulation containing 1.5% guar gum ( p < .05) however, non-significant difference was observed in other formulations ( p > .05). The MetMb % of the high fat emulsion formulation was higher than low fat formulations ( p < .05). The significant increase of TBARS value, protein carbonyl groups and loss of protein sulfhydryl groups in high fat formulation reflect the more oxidative degradation of the lipids and muscle proteins during the preparation of meat emulsion than low fat formulations ( p < .05). Microstructure observations using SEM shows that increase in guar gum levels lead to formation of gel network, which holds more water. Sensory evaluation indicates that low fat formulation supplemented with 0.5% gum had quality characteristics that were similar to those of the high fat control. Practical applications Nowadays consumers demand healthier meat products that are low in salt, fat, cholesterol, and calories and contain in addition health-promoting bioactive components such as fibers and natural antioxidants. Thus, use of fat replacers with health promoting properties needs research studies. The study of emulsions with added fat replacers is important because the parameters studied in this work facilitate prediction of changes in the final product. Furthermore, the fat replacer guar gum used in this study is a source of soluble dietary fiber in food products and a number of clinical studies have shown a reduction in postprandial glycemia and insulinemia on consumption of it. Since traditional meat products of India especially in the state of Jammu and Kashmir, contain higher amounts of animal fat and no work has done on such products to reduce fat content with alternate ingredients having health benefits with minimal effects on the product quality. Thus, this research work was conducted to study the properties of low fat meat emulsions, because quality of the final product depends on emulsion characteristics. [ABSTRACT FROM AUTHOR]

The objective of this study was to determine the effect of house cricket ( Acheta domesticus) flour addition on physicochemical and textural properties of meat emulsion under various formulations. As an initial marker of functionality, protein solubility, water absorption, emulsifying capacity, and gel formation ability of house cricket flour were determined at pH (2 to 10) and NaCl concentrations (0 to 2.10 M). Control emulsion was formulated with 60% lean pork, 20% back fat, and 20% ice. Six treatment emulsions were prepared with replacement of lean pork and/or back fat portions with spray-dried house cricket flour at 5% and 10% levels, based on a total sample weight. The protein solubility of house cricket flour (67 g protein/100 g) was significantly altered depending upon pH ( P < 0.0001) and NaCl concentration ( P = 0.0421). Similar water absorption capacity, emulsifying capacity, and gel formation ability of house cricket flour were found between 0 and 2.10 M NaCl concentration ( P > 0.05). The replacement of lean meat/fat portion with house cricket flour within 10% level could fortify protein and some micronutrients (phosphorus, potassium, and magnesium) in meat emulsion, without negative impacts on cooking yield and textural properties. Our results suggest that house cricket flour can be used as an effective nonmeat functional ingredient to manufacture emulsified meat products. Practical Application To better utilize house cricket flour as a food ingredient in wide application, understanding its technological properties in various pH, and ionic strength conditions is a pivotal step. Protein solubility of house cricket flour would be considerably affected by the varying pH and NaCl concentrations of applied conventional foods. In the case of meat emulsion, within 10% lean meat and/or fat portions could be successfully substituted with house cricket flour without detectable adverse impacts on technological properties associated with cooking yield and instrumental analysis of texture. Thus, our findings suggest that house cricket flour possess the necessary physical properties to be used as an alternative nonmeat ingredient for incorporation within emulsified meat products, which could be further explored in subsequent sensory-based studies. [ABSTRACT FROM AUTHOR]

The effect of modified starch addition on the functional properties of meat emulsions was studied by using a model system. In this research, the effects of modified potato starches (native, acid, dextrinized and pregelatinized) and starch level (1%, 2 and 4 w/w) on the emulsion capacity, stability, pH and texture properties were investigated in oil/water model emulsion systems. The highest emulsion capacity (181.42 ml oil/g protein) was determined for acid modified starch. As a result of texture analysis, hardness, gumminess and chewiness values of raw and cooked meat emulsions were significantly (P <0.01) affected by the type of starch and starch level. It was concluded in this study that 1% pre-gelatinized modified starch is good for ensuring emulsion stability and can be used as stabilizer for meat emulsions in order to improve the some texture properties of meat emulsions due to higher emulsion stability and capacity than the other starch levels. [ABSTRACT FROM AUTHOR]

Different types of cheese powder were added to meat emulsion sausages in order to address its influence on chemical composition, volatile compounds profile and sensory properties, and its potential to reduce salt content through boosting saltiness. Addition of cheese powder to emulsion sausages modified their profile of volatile compounds. Blue cheese increased some ketones, alcohols, and esters, while brown cheese brought typical Maillard reaction compounds. Overall, addition of cheese powders to sausages enhanced the intensity of flavour traits. A mixture of hard and blue cheese powder showed the highest effect on boosting saltiness, while brown cheese powder showed the strongest umami and meat flavour boosting effect, and sausages with added blue cheese powder showed a more intense aftertaste. Hardness significantly increased due to the addition of blue cheese powder. Addition of cheese powder to emulsion sausages might be an interesting tool to boost flavour and reduce salt content in cooked sausages with no negative effect on saltiness or overall flavour. [ABSTRACT FROM AUTHOR]

Emulsion-based meat products play an important role in modern meat industry. Though meat batters have been prepared traditionally since long back in the history, the scientific principles and the knowhow are significantly important in the case of commercial products. In India, the market for emulsion meat products is gaining importance in the recent years and the native producers are in critical need for the scientific basis of production of emulsion meat products with better yield, good sensory qualities and nutrition. Hence, this review will throw light on some of the important factors which influence the properties of meat emulsion such as stability, structure, etc. and the product texture and yield as the revealed by past researches which will be useful to the meat processors in their practical application in preparing meat emulsion products. [ABSTRACT FROM AUTHOR]

Agroindustrial residues such as plantain (Musa paradisiaca L. cv. Dominico Harton) peel have functional properties, which made them suitable for use as a food ingredient. The aim of this research was to evaluate plantain peel flour (PPF) as a binder in the production of frankfurtertype sausage. Five formulations were prepared in which wheat flour (WF) was replaced by PPF as follows: 25%, 50%, 70% and 100%, respectively. Once the sausages are obtained, the water retention capacity (WRC), emulsifying stability (ES), and pH, were evaluated. When comparing treatments with the control sample, it was found that replacing up to 50% of WF by PPF, significantly increased WRC by 7.5%. When replacing 25%, Es, there were no statistically significant changes among treatments. When replacing 100%, the product pH, was significantly decreased. The results indicated, the sausages made with 50% of PPF, retain the formulation water, which is why the PPF has potential for this type of sausage manufacture. PPF could replace WF up to 25% in the frankfurter formulation, without affecting ES and pH and favoring WRC. [ABSTRACT FROM AUTHOR]

The minimally processed raw meat products with all natural ingredients are now preferred by the consumers over highly processed cooked meat products. This study evaluated the antilisterial, antimicrobial and antioxidant effects of a combination of pediocin from Pediococcus pentosaceus and Murraya koenigii berries (MKB) in the raw goat meat emulsion during storage at 4 °C for 9 days. Goat meat emulsion was prepared and artificially inoculated with Listeria innocua to analyze the antilisterial effect. A substantial reduction (P < 0.05) in the L. innocua count was observed in the treated samples during the entire storage period. Aerobic plate count and psychrophilic count were also observed significantly (P < 0.05) lower in the treated samples. TBARS differed significantly among the treatments and found lower in MKB treated samples. There were no significant differences between treated and negative control samples for emulsion stability and microstructural (SEM) attributes. No marked differences were observed for color attributes ( L* , a* , b* , h ab , C* , ΔE and browning index) between treated and untreated samples. [ABSTRACT FROM AUTHOR]

In this study, we evaluated the effect of minced fish (MF) inclusion on the acceptance of tilapia sausages. One hundred consumers participated in the sensory acceptance test in relation to the attributes appearance, color, aroma, flavor, texture, overall impression, and purchase intent. The tests were conducted using the same composition of ingredients, varying only the raw material (MF and fillet), resulting in 5 different formulations. To represent the results of the sensory attributes, we generated internal preference maps through principal component analysis and parallel factor analysis, as well as frequency histograms. The data showed greater acceptability for the sample produced with 50% MF, although all had shown satisfactory results. We conclude that inclusion of MF can be suitable in the preparation of fish sausage due to high consumer acceptance. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate the effect of the chlorophyll-deficient microalgae mutants, honey (yellow) and white Chlorella vulgaris , (3%) on the nutritional, physicochemical, microbiological, and sensory characteristics of frankfurters. The presence of microalgae resulted in increased PUFA content and higher PUFA/SFA ratio, but lower n-6/n-3 ratio and lipid indices (P < 0.05). C. vulgaris inclusion in frankfurters increased (P < 0.05) Na, K, Ca, P, and Zn and improved the Na/K ratio, but lowered Mn, and in the case of white C. vulgaris , Cu content, compared to the control. The higher protein content decreased water release from emulsions elaborated with microalgae. White C. vulgaris inclusion decreased cohesiveness and springiness of the frankfurters. Due to the presence of pigment, microalgae inclusion led to a decrease in redness and an increase in yellowness of frankfurters. The presence of microalgae resulted in lower (P < 0.05) bacterial counts and did not affect TBARs during storage. The addition of microalgae in frankfurters produced acceptable sensory characteristics but resulted in lower scores compared to reference products. • Frankfurters were produced with chlorophyll-deficient mutants Chlorella vulgaris. • Microalgae inclusion resulted in a healthier lipid formulation of frankfurters. • The contents of most minerals were higher in frankfurters fortified with C. vulgaris. • Frankfurters with microalgae addition showed the same TBARS as a control. • Honey and white C. vulgaris incorporated expressed antimicrobial effect. [ABSTRACT FROM AUTHOR]

The present study focuses on the effect of different levels of red grape pomace (1 and 2%, w/w) on the color changes, lipid oxidation (TBARS), antioxidant activity, microbial counts, total phenol content and sensory attributes of the sausages formulated with various levels of sodium nitrite (30, 60 and 120 mg/kg). It was found that the addition of grape pomace (1%, w/w) in combination of reduced nitrite levels to the beef sausage samples reduced TBARS content and the degree of lipid oxidation. Antioxidant activity and total phenol contents were further evaluated based on DPPH scavenging activity method. A significant reduction in lightness ( L* ) and yellowness ( b* ) of systems containing grape pomace was observed, following by an increase in the oxidative stability and the radical scavenging activity. Acceptability of beef sausages was not significantly ( P > 0.05) affected by the addition of grape pomace and had relatively greater scores from a sensory point of view. [ABSTRACT FROM AUTHOR]

The effect of sugar beet fiber (SBF) concentration on the rheological properties of meat emulsions was determined. In addition, texture profile analysis (TPA) of cooked meat emulsions was carried out to find a possible relationship between the dynamic rheological data and TPA parameters. All studied emulsions exhibited non-Newtonian, pseudoplastic behavior since apparent viscosity decreased with increasing shear rate. The Ostwald-de Waele model was successfully used to describe the flow properties of meat emulsions (R² > 0.913). Emulsion systems were characterized as weak gel-like macromolecular dispersions with storage modulus (G') much greater than loss modulus (G?). A modified Cox-Merz rule was applied by multiplying angular frequency with shift factors (αSF). Material stiffness parameter (Aα) calculated from complex modulus (G*) increased as SBF concentration increased. Significant correlations among the material stiffness data and TPA parameters were observed. It was concluded that TPA parameters could be predicted by using dynamic shear tests, and hence, this will make possible to save time and cost for meat processors when manufacturing a product with acceptable structural or textural characteristics. [ABSTRACT FROM AUTHOR]

Emulsion-type sausages were produced, at 80 °C for either 0, 10, 20 or 30 min, using homogeneous Taihu pork batters. Low-field nuclear magnetic resonance (LF-NMR), with or without deuterium oxide (D 2 O) substitution, evaluated the proton mobility states related to both water and fat molecules, or fat molecules only, respectively, in the sausage samples, during heat-induced gelation. The decreasing trend in the area proportion of main peak T 21 , reflected a tighter gel structure in emulsion-type sausages. Raman spectra (400–3600 cm –1 ) revealed decreased α-helix, but increased β-sheet, β-turns and random coil contents, during the gelling process. Moreover, principal component analysis (PCA) showed significant correlations between secondary protein structures with distribution of water and fat in the gel matrix. Furthermore, this study established the relationship of water and fat protons mobility with changes in secondary protein structures, and described the critical time of gel formation in emulsion-type pork sausages. [ABSTRACT FROM AUTHOR]

Initially, meat emulsions were studied in a model system to optimize phosphate and potassium chloride concentrations. In the second step, frankfurters containing 1.00%, 1.30% and 1.75% sodium chloride (NaCl) were processed and their stability was monitored over 56 days. In the emulsion tests, the best levels in relation to shear force found in model system were 0.85% and 0.25% of potassium chloride and phosphate, respectively. In the second step, treatments with 1.30% and 1.75% NaCl performed better in most of the analysis, particularly the sensory analysis. Consumers could identify the levels of salt, but this was not the factor that determined the overall acceptability. In some technological parameters, frankfurters with 1.30% NaCl were better than those with 1.75%. This represents a reduction of approximately 25% sodium chloride, or 18% reduction in sodium (916 mg/100 g to 750 mg/100 g), and it appears to be feasible from a technological, microbiological and sensory point of view. [ABSTRACT FROM AUTHOR]

Aloe vera has been used worldwide for pharmaceutical, food, and cosmetic industries due to its wide biological activities. However, quality improvement of low fat meat products and their acceptability with added Aloe vera gel (AVG) is scanty. The aim of this study was to explore the feasibility of using fresh AVG on physicochemical, textural, sensory and nutritive qualities of goat meat nuggets. The products were prepared with 0%, 2.5%, and 5% fresh AVG replacing goat meat and were analyzed for proximate composition, physicochemical and textural properties, fatty acid profile and sensory parameters. Changes in lipid oxidation and microbial growth of nuggets were also evaluated over 9 days of refrigerated storage. The results showed that AVG significantly (p<0.05) decreased the pH value and protein content of meat emulsion and nuggets. Product yield was affected at 5% level of gel. Addition of AVG in the formulation significantly affected the values of texture profile analysis. The AVG reduced the lipid oxidation and microbial growth in nuggets during storage. Sensory panelists preferred nuggets with 2.5% AVG over nuggets with 5% AVG. Therefore, AVG up to 2.5% level could be used for quality improvement in goat meat nuggets without affecting its sensorial, textural and nutritive values. [ABSTRACT FROM AUTHOR]

In this study, a possible use of aloe gel ( AG) as a potential fat replacer in the manufacture of low-fat meat emulsion was investigated. The low-fat meat emulsions with added AG and vegetable oil ( VO) in different proportions [ AG7.5 (7.5% AG + 7.5% VO); AG5 (5% AG + 10% VO); AG2.5 (2.5% AG + 12.5% VO)] were compared with full-fat meat emulsion [Control (15% VO only)]. A substantial fat reduction ( P < 0.05) up to 50% as compared to full-fat control meat emulsion was recorded without compromising other sensory attributes of meat emulsion. Microstructural properties as studied by scanning electron microscopy indicated more homogenous regular emulsion matrix with fewer cracks and more regular shaped oil droplets in AG-added samples than the control samples. [ABSTRACT FROM AUTHOR]

Minced-ostrich meat was blended and chopped with various proportions of gum powder in terms of carboxymethyl cellulose (CMC), locust bean gum (LBG) and xanthan gum (XAN) and other ingredients such as sodium chloride, sodium tripolyphosphate, linseed oil and ice. The mixed batters were then pressurized at 600 MPa and 50 °C for 40 min. Subsequently, their viscoelastic and physicochemical properties were assessed in terms of their dynamic oscillatory moduli, their resultant creep behavior, water-holding capacity and electrophoretic profiles. The results showed that the addition of individual gums and composite gum mixtures influenced both viscoelastic behavior and water-holding capacity of resulting pressurized ostrich-meat emulsions. The most elastic system (greatest G ′ or smallest J 0 with 4.21 × 10 − 5 1/Pa) was the meat emulsion with 1% LBG added, while the least were those formed by adding 1% XAN or 0.5% XAN plus 0.5% CMC ( J 0 with 10 × 10 − 5 and 20.3 × 10 − 5 1/Pa, respectively). Subsequent electrophoritic profiles and the measurement of the water-holding capacity of the materials suggested an evidence of ionic interaction between the basic ostrich-meat protein matrix and XAN or XAN plus CMC. Industrial relevance Ostrich meat emulsions containing composite gums were set by combined pressure and temperature. Subsequently, the pressurized gels were characterized by dynamic oscillatory, creep and other physicochemical measurements. In particular, the viscoelastic measuring system is a promising tool for ensuring quality of food biopolymers. Therefore, this methodology is relevant in the area of controlling quality or developing new products where difficulty exists in solubilising the samples. [ABSTRACT FROM AUTHOR]

In this study, the effect of starch modification (NPS, native potato starch; AMS, acid modified starch; DMS, dextrinized modified starch; PGS, pre-gelatinized modified starch) and its concentrations (1, 2, 4 wt%) on steady-state and dynamic rheological properties of meat emulsions were determined. Water-oil binding capacity and intrinsic viscosity of potato starch increased up to 5.07–0.90 g/g, and 14.98 mL/g, respectively, after modifying with pre-gelatinization method. The particle size of starches as average mean diameter ranged between 44.19 μm and 293.06 μm. The maximum solubility was obtained from DMS after heat treatment at 70 °C being 48.22%, which means an increase about 3.06-fold in solubility as compared with NPS. The Ostwald-de Waele model was successfully used to describe the flow properties of meat emulsions (R 2 > 0.961). While starch types did not affect the K values of emulsions ( p > 0.05), starch concentrations did ( p < 0.01). All studied emulsions exhibited non-Newtonian, pseudoplastic behavior since n values were lower than 1. Emulsion systems were characterized as weak gel-like macromolecular dispersions with storage modulus ( G ′) much greater than loss modulus ( G ″). A modified Cox–Merz rule was applied by multiplying angular frequency with shift factors ( α SF ). Frequency dependence of complex modulus ( G *) was studied to measure the strength of cross-linking protein network of emulsion systems by calculating a constant order of relaxation function ( α ) and concentration dependent stiffness parameter ( A α ). It was concluded that PGS addition improved rheological properties of meat emulsions due to higher solubility, particle size, intrinsic viscosity, water-oil binding capacity than NPS. [ABSTRACT FROM AUTHOR]

The objective of this study was to determine whether light backscatter response from fresh pork meat emulsions is correlated to final product stability indices. A specially designed fiber optic measurement system was used in combination with a miniature fiber optic spectrometer to determine the intensity of light backscatter within the wavelength range 300–1100 nm (UV/VIS/NIR) at different radial distances (2, 2.5 and 3 mm) with respect to the light source in pork meat emulsions with two fat levels (15%, 30%) and two levels (0, 2.5%) of the natural antioxidant hydrolyzed potato protein (HPP). Textural parameters (hardness, deformability, cohesiveness and breaking force), cooking loss, TBARS (1, 2, 3, and 7 days of storage at 4 °C) and CIELAB color coordinates of cooked emulsions were measured. The light backscatter was directly correlated with cooking losses, color, breaking force and TBARS. The optical configuration proposed would compensate for the emulsion heterogeneity, maximizing the existing correlation between the optical signal and the emulsion quality metrics. [ABSTRACT FROM AUTHOR]

The dose-dependent effects of green tea extract (100, 500, or 1500 ppm) on the textural and oxidative stability of meat emulsions were investigated, and compared to a control meat emulsion without extract. All levels of green tea extract inhibited formation of TBARS as a measure for lipid oxidation. Overall protein thiol oxidation and myosin heavy chain (MHC) cross-linking were inhibited by 100 ppm green tea extract without jeopardizing the textural stability, while increasing concentrations of extract resulted in reduced thiol concentration and elevated levels of non-reducible protein modifications. Addition of 1500 ppm green tea extract was found to modify MHC as evaluated by SDS-PAGE combining both protein staining and specific thiol staining, indicating that protein modifications generated through reactions of green tea phenolic compounds with protein thiols, disrupted the meat emulsion properties leading to reduced water holding capacity and textural stability. Hence, a low dose of green tea extract preserves both the textural and the oxidative stability of the meat proteins. [ABSTRACT FROM AUTHOR]

The technological and rheological properties were evaluated for low-fat and reduced-sodium meat emulsions containing various levels of prebiotic fibers (inulin, FOS, polydextrose, and resistant starch) as fat and starch substitutes. Low emulsion stability was observed, mainly in the treatments containing inulin and polydextrose (3 and 6 g/100 g). Higher tenderness was observed in the low-fat bologna sausages containing prebiotic fibers. The prebiotic fibers influenced the color of the meat batters but not that of the bologna sausage, probably due to the curing reactions and fat melting and subsequent solidification reaction. The meat batters presented elastic behavior, demonstrated by a G ′ value that was higher than the G ″ value during oscillatory tests. An increase in the gelation temperature may result from the addition of the fibers, which delayed the gelation reaction of the myosin. The microstructures showed a porous matrix in the treatments containing prebiotic fibers, and a compact and dense network was observed only in the control formulations and that one containing inulin, due to its chain length. Further studies are required to evaluate the suitable levels in low-fat and reduced-sodium meat emulsions of prebiotic fibers, including cassava starch, which it is not possible to remove completely from the formulations. [ABSTRACT FROM AUTHOR]

The antimicrobial efficacy of three antimicrobials with different aqueous solubilities (sodium lactate > lauric arginate (Nα-lauroyl- l -arginine ethyl ester, LAE > methylparaben)) was evaluated. The antimicrobials were added individually, and as binary or ternary mixtures to emulsion type sausages. The antimicrobial efficacy was evaluated against Listeria innocua on the surface of sliced sausages over 24 days of storage at 6 °C. Growth over time was determined, and fitted to a model with a shifted logistic function for evaluation and comparison of antimicrobial effectiveness. The maximum added concentration of LAE (2.0 × 10 3 μg/g) delayed growth for 1 day. In contrast, lactate and methylparaben (40 and 4.0 × 10 3 μg/g, respectively) delayed growth for 18 and 7 days, respectively. Five different mixing ratios were investigated for the three different binary combinations: LAE/lactate, LAE/methylparaben and lactate/methylparaben. Results showed that efficacy could be enhanced through mixing of antimicrobials and that the type of antimicrobials as well as their mixing ratio influenced the antimicrobial efficacy of combinations. For ternary combinations, concentrations of two antimicrobials were kept constant while the concentration of the third preservative was varied. To this purpose LAE/methylparaben, LAE/lactate and lactate/methylparaben combinations with concentrations of 0.3/3.3, 0.3/16.7 and 6.6/2.7 × 10 3 μg/g, respectively, were combined with increasing concentrations of lactate, methylparaben and LAE, respectively. Results indicated that a further increase in activity is possible, albeit there appears to be a critical concentration of the third component below which the ternary combinations were less effective than the binary combinations. Overall our study suggests that combining antimicrobials with different solubilities is a promising approach to enhance shelf life of structurally-complex products such as emulsion type sausages. [ABSTRACT FROM AUTHOR]

This study presents a novel non-destructive X-ray technique for analyzing meat emulsions before and after heat treatment. The method is based on X-ray grating-interferometry where three complementary imaging modalities are obtained simultaneously measuring the absorption, refraction and scattering properties of the sample. Enhanced contrast capabilities of this X-ray technique makes studies on materials with similar attenuation properties possible. The emulsion samples were imaged both in a raw and cooked state. Additionally, different fat types were used in the emulsions in order to compare microstructural differences when either pork fat or sunflower oil was added. From the reconstructed tomograms the different constituents in the emulsions were segmented using a multivariate segmentation method. From this, a quantitative analysis was performed between the different samples, determining properties such as percent object volumes, porosity, average structure thickness and cooking loss. The grating-based X-ray technique and multivariate segmentation made the analysis of the microstructure possible which further gives insight to how both heat treatment, and the use of different lipid types, affect the final protein network quality. [ABSTRACT FROM AUTHOR]

Highlights: [•] Multiple emulsions can be used as a food ingredient for the development of healthier meat products. [•] Multiple emulsions were used as pork backfat in meat products. [•] W/O/W emulsions showed good stability for longer than is usually required in meat reformulation. [•] W/O/W emulsions affected the physicochemical properties of gel/emulsion meat systems. [ABSTRACT FROM AUTHOR]

Highlights: [•] Salamis with similar properties were prepared in a high shear grinder-filler. [•] Energy consumption could be reduced using higher number of knife blades. [•] Raw material temperature affected energy consumption but not product quality. [Copyright &y& Elsevier]