Antioxidant Mechanism of Yam Saponin, Hesperidin, Ginger Extract on Oxidative Chicken Myofibrillar Protein

2021 ◽  
Vol 15 (3) ◽  
pp. 428-434
Author(s):  
Yingying Cao ◽  
Ping Zhao ◽  
Wenguang Fan ◽  
Yuhui Liu
Keyword(s):  
Plant Extracts ◽  
Sulfhydryl Group ◽  
Surface Hydrophobicity ◽  
Water Holding Capacity ◽  
Control Group ◽  
Myofibrillar Proteins ◽  
Ginger Extract ◽  
Antioxidant Mechanism ◽  
Protein Gels ◽  
Water Holding

The antioxidant mechanism of three plant extracts on the oxidative myofibrillar proteins oxidized by Fe3+/H2O2 at 0 °C for 12 h was analyzed. These plant extracts were added to myofibrillar proteins with the concentrations of 0.5 and 1 mg/mL Besides, the group without added extracts was adopted as controls. Total sulfhydryl content, carbonyls, surface hydrophobicity, and protein cross-linking, protein gel properties were analyzed. In the meantime, the oxidized suspensions were processed as protein gels. Then, the water-holding capacity and the hardness of gels were analyzed. The resulted showed that the suspensions of three plant extracts and the oxidized myofibrillar proteins led to a significant decrease in surface hydrophobicity, carbonyls and gel hardness of the sulfhydryl group, while three plant extracts promoted aggregation of the myofibrillar proteins and increased water-holding capacity of gels compared with that of the control. The scanning electron microscope showed that the gels structure of the three extracts were obviously better than that of the control group, and the ginger group was the best.Yam saponin exhibited the best antioxidant effect, followed by ginger extract and hesperidin.

The water holding capacity and storage modulus of chemical cross-linked soy protein gels directly related to aggregates size

LWT ◽  
2019 ◽  
Vol 103 ◽  
pp. 125-130 ◽  
Author(s):  
Chao Wu ◽  
Wuchao Ma ◽  
Yeming Chen ◽  
Willard Burton Navicha ◽  
Di Wu ◽  
...  
Keyword(s):  
Storage Modulus ◽  
Soy Protein ◽  
Water Holding Capacity ◽  
Protein Gels ◽  
And Storage ◽  
Water Holding

scholarly journals Effect of Gelatin Coated Rosemary Extract (Rosmarinus Officinalis L.) on the Quality of Refrigerated Duck Meat

2019 ◽  
Vol 39 (04) ◽  
Author(s):  
Kimia Banikarimi K Rai ◽  
Habibollah Mirzaei K Basu ◽  
Mohammad Farsi K Basu
Keyword(s):  
Storage Period ◽  
Edible Coating ◽  
Water Holding Capacity ◽  
Rosemary Extract ◽  
Control Group ◽  
Total Volatile ◽  
Psychrotrophic Bacteria ◽  
Rosmarinus Officinalis L ◽  
Water Holding

The effect of edible coating of gelatin (1, 2 and 3%) containing aqueous extract of rosemary (1% and 2%) on physiochemical (pH, total volatile nitrogen, peroxide values and water holding capacity) and microbiological (psychrotrophic) properties of duck fillet were evaluated. The pH of coated samples were significantly (plessthan0.05) lower than that of untreated sample. TVN (total volatile nitrogen) value increased with storage period in all the samples but coatings significantly decreased production of TVN compared to the control. Also the coatings decreased lipid oxidation of the meat as rosemary postponed primary oxidation of fillet, while this parameter in control group was sharply increased by time. WHC (water holding capacity) increased significantly (plessthan0.05) with storage period and level coatings. Coating had a significant reducing effect on growth of psychrotrophic bacteria during 9 days at 4°C. In conclusion, gelatin edible coating enriched with rosemary could retard chemical and microbial reactions related to spoilage of meat during refrigerated storage.

Effects of three treatments on protein structure and gel properties of Perccottus glenii myofibrillar protein

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Guochuan Jiang ◽  
Lili Tian ◽  
Ruifeng Hu ◽  
Hongrui Sun ◽  
Yuan Fu ◽  
...  
Keyword(s):  
Protein Structure ◽  
Hydrophobic Interactions ◽  
Sulfhydryl Group ◽  
Myofibrillar Protein ◽  
Control Group ◽  
Perccottus Glenii ◽  
Scanning Calorimetry ◽  
Gel Properties ◽  
Protein Gels ◽  
Group Protein

Abstract In order to improve Perccottus glenii myofibrillar protein (MP) gel properties, three treatments were evaluated: ultrasonic, transglutaminase (TGase) and combined ultrasonic-transglutaminase treatments. Combined ultrasonic-transglutaminase treatment altered protein structure and gel properties most dramatically. As compared with untreated control group protein, treated protein gels possessed decreased sulfhydryl group content and increases in water holding capacity, whiteness value and hydrophobic interactions that increased gel strength value by up to 3.79 times that of untreated protein gel. Protein structural and Differential scanning calorimetry (DSC) analyses revealed that combined ultrasonic-TGase treatment increased both protein thermal denaturation temperature and UV absorbance (as compared to control and other treatment groups) that supported formation of MP gels with desirable characteristics. These results provide a theoretical basis for development of superior MP gels to promote greater utilization of this fish protein resource by the food industry.

scholarly journals Low-temperature combined with high-humidity thawing improves the water-holding capacity and biochemical properties of Portunus trituberculatus protein

2021 ◽  
Vol 5 ◽  
Author(s):  
Jiangang Ling ◽  
Xiaoting Xuan ◽  
Zihan Xu ◽  
Tian Ding ◽  
Xudong Lin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Lipid Oxidation ◽  
Protein Oxidation ◽  
Water Immersion ◽  
Surface Hydrophobicity ◽  
Biochemical Properties ◽  
Water Holding Capacity ◽  
Portunus Trituberculatus ◽  
High Humidity ◽  
Water Holding

Abstract This study compared the effects of conventional thawing methods (water immersion thawing (WIT, (25±1) °C), natural air thawing (AT, (25±1) °C, relative humidity (RH) (65±2) per cent), refrigerator thawing (RT, 4 °C, RH (80±2) per cent) and low-temperature (LT) combined with high-humidity thawing (LT, –1 °C to 1 °C (LT–1–1), 2–4 °C (LT2–4), 5–7 °C (LT5–7) and 8–10 °C (LT8–10), RH≥95 per cent) on the water-holding capacity, lipid oxidation and biochemical properties of Portunus trituberculatus (P. trituberculatus) myofibrillar protein. The results showed that WIT and AT significantly decreased the water-holding capacity while dramatically increasing lipid oxidation, protein oxidation and degeneration, resulting in serious P. trituberculatus quality deterioration. High humidity was beneficial for P. trituberculatus thawing. The thawing time of P. trituberculatus under the conditions of LT2–4 was only 39.39 per cent of that of conventional air thawing at 4 °C (RT), and the LT2–4 samples not only maintained better water-holding capacity but also had an obviously reduced degree of lipid oxidation, protein oxidation and denaturation. Thawed samples LT2–4 and LT5–7 provided better maintenance of P. trituberculatus quality than the LT–1–1 and LT8–10 samples. The best quality was exhibited after thawing at 2–4 °C. The levels of thiobarbituric acid reacting substances, carbonyl content and surface hydrophobicity observably decreased in these samples, while the total sulfhydryl contents dramatically increased compared to those of conventionally thawed samples, indicating lower lipid oxidation and protein oxidation. Moreover, the Ca2+-ATPase activity of the sample thawed at 2–4 °C (2.06 μmol Pi/mg prot/h) was markedly higher than that of samples subjected to WIT and AT. The product qualities observed after thawing at –1 °C to 1 °C, 5–7 °C and 8–10 °C under LT were comparable to that observed by RT. Considering its thawing efficiency and product quality, LT is a suitable method for the thawing of P. trituberculatus, and the ideal thawing conditions were LT at 2–4 °C.

scholarly journals The Effects of Using Pomegranate (Punica granatum) Seed Powder on Quality Parameters of Model System Chicken Meat Emulsions

2021 ◽  
Vol 9 (8) ◽  
pp. 1485-1494
Author(s):  
Meltem Serdaroğlu ◽  
Özlem Yüncü ◽  
Hülya Serpil Kavuşan ◽  
Elnaz Sharefiabadi ◽  
Sahar Seyedhosseini
Keyword(s):  
Quality Parameters ◽  
Model System ◽  
Chicken Meat ◽  
Water Holding Capacity ◽  
Chicken Breast ◽  
Control Group ◽  
Ph Values ◽  
Pomegranate Seed Powder ◽  
Pomegranate Seed ◽  
Water Holding

This study aimed to investigate the effects of using 1%, 3% and 5% pomegranate seed powder (PSP) on model system chicken meat emulsion (CME) quality parameters. For this purpose, the properties of the emulsion samples prepared using different amounts of PSP were compared with the control group prepared with 70% chicken breast meat, 18% chicken skin, 10% water, 1.5% salt and 0.5% sodium tripolyphosphate (STPP). Chemical composition, pH, emulsion stability, water holding capacity, cooking yield, and color were analyzed in emulsion samples. TBARs and peroxide values of the samples were determined on days 0, 3, 5 and 7 during storage. Use of pomegranate seed powder in emulsion formulation resulted a decrease in b* and a* values. At the same time, with the addition of pomegranate seed powder, there was no difference in the protein values of the raw samples and the moisture, ash and pH values of the cooked samples. It was also observed that pH values, water holding capacity and cooking efficiency of emulsions increased with the increasing levels of PSP. Both peroxide and TBARs values were lower in emulsion samples formulated with PSP on 7 d compared to the control group.

scholarly journals Modification of Physicochemical Properties of Breadfruit Flour Using Different Twin-Screw Extrusion Conditions and Its Application in Soy Protein Gels

Foods ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1071 ◽  
Author(s):  
Shiqi Huang ◽  
Laura Roman ◽  
Mario M. Martinez ◽  
Benjamin M. Bohrer
Keyword(s):  
Physicochemical Properties ◽  
Soy Protein ◽  
Mechanical Energy ◽  
Water Holding Capacity ◽  
Twin Screw Extrusion ◽  
Melt Temperature ◽  
Screw Extrusion ◽  
Twin Screw ◽  
Protein Gels ◽  
Water Holding

The objective was to modify functional properties of breadfruit flours using twin-screw extrusion and test the physicochemical properties of the extruded flours. Extruded breadfruit flours were produced with twin-screw extrusion using different last barrel temperature (80 °C or 120 °C) and feed moisture content (17% or 30%). These conditions resulted in four extruded flours with different mechanical (specific mechanical energy, SME) and thermal (melt temperature) energies. At temperatures below the gelatinization of the native starch (<70 °C), swelling power was increased in all extruded treatments. Solubility was dramatically increased in high-SME extruded flours at all tested temperatures. Water holding capacity was dramatically increased in the low-SME extruded flours. A two-fold higher cold peak viscosity was obtained for low SME-high temperature extruded flour compared with the other extruded flours. Low SME-low temperature extruded flour still exhibited a hot peak viscosity, which occurred earlier than in native flour. Setback was decreased in all extruded flours, especially in high-SME treatments. The incorporation of extruded flours into soy protein gels did not affect cooking loss, while hardness and springiness decreased with the addition of extruded flours. Overall, extrusion of breadfruit flour altered functional flour properties, including water holding capacity and pasting properties, and modified the texture of soy protein gels.

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