scholarly journals Effects of rice protein hydrolysates prepared by microbial proteases and ultrafiltration on free radicals and meat lipid oxidation

LWT ◽  
2013 ◽  
Vol 50 (1) ◽  
pp. 331-335 ◽  
Author(s):  
Kequan Zhou ◽  
Corene Canning ◽  
Shi Sun
Keyword(s):  
Free Radicals ◽  
Lipid Oxidation ◽  
Protein Hydrolysates ◽  
Rice Protein

Antiaging effects of rice protein hydrolysates on Drosophila melanogaster

2021 ◽  
Author(s):  
Yang Yue ◽  
Mengting Wang ◽  
Zhangping Feng ◽  
Yanyun Zhu ◽  
Jianchu Chen
Keyword(s):  
Drosophila Melanogaster ◽  
Protein Hydrolysates ◽  
Rice Protein

Rice protein hydrolysates (RPHs) inhibit the LPS-stimulated inflammatory response and phagocytosis in RAW264.7 macrophages by regulating the NF-κB signaling pathway

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71295-71304 ◽  
Author(s):  
Li Wen ◽  
Yuehua Chen ◽  
Li Zhang ◽  
Huixin Yu ◽  
Zhou Xu ◽  
...  
Keyword(s):  
Inflammatory Response ◽  
Signaling Pathway ◽  
Nuclear Translocation ◽  
Protein Hydrolysates ◽  
Rice Protein ◽  
Phagocytic Ability ◽  
Raw264.7 Macrophages ◽  
Tnf Α

Different RPH components inhibit LPS-induced NO and TNF-α production. RPHs-C-7-3 inhibits the expression of pro-inflammatory expression. RPHs-C-7-3 suppresses the LPS-stimulated phagocytic ability. RPHs-C-7-3 regulates the nuclear translocation of p65.

Rice protein radicals: growth and stability under microwave treatment

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97825-97831 ◽  
Author(s):  
Da-ming Fan ◽  
Bo Hu ◽  
Lu-fen Lin ◽  
Lue-lue Huang ◽  
Ming-fu Wang ◽  
...  
Keyword(s):  
Free Radicals ◽  
Protein Structure ◽  
Microwave Field ◽  
Microwave Treatment ◽  
Rice Protein ◽  
Protein Radicals

Carbon-centred radicals are revealed in the microwave treated rice protein samples. The change of protein structure in a microwave field is often presumed to be caused by free radicals.

Radical Scavenging Activities and Lipid Peroxidation Inhibition of Okara Protein Hydrolysates Prepared with Proteases and Sequential UF

2013 ◽  
Vol 807-809 ◽  
pp. 438-445 ◽  
Author(s):  
Yu Chang Tseng ◽  
Hou Chia Tseng ◽  
Yih Ming Weng
Keyword(s):  
Lipid Oxidation ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Meat Products ◽  
Storage Period ◽  
Protein Isolate ◽  
Protein Hydrolysates ◽  
Enzyme Hydrolysis ◽  
Scavenging Activity ◽  
Trolox Equivalent

Okara protein isolate was hydrolyzed by two stages enzyme hydrolysis (Protamex+Flavourzyme, Pro+Fla ) and further separated by sequential ultrafiltration (UF) to four fractions (P1~P4). The 2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) scavenging activity of the P3 fraction (1kDa < MW < 3kDa) is 24.6 mmol trolox equivalent (TE)/g peptide and the inhibitory activity is 84.2% at 10 mg/mL. The hydroxyl radical scavenging activity is 85.4% at the same concentration. Pro+Fla-P3 was incorporated into ground beef to determine their effect on lipid oxidation during a 15-day storage period. Pro+Fla-P3 fraction at 500 μg/g significantly inhibited lipid oxidation by 20.8% and 18.2% at day 8 and 15 of storage. The concentration at 250 μg/g could not significantly inhibit lipid oxidation at 15 day. It suggests that okara protein hydrolysates could be developed and used to improve shelf-life of meat products.

scholarly journals Evaluating the Antioxidants, Whitening and Antiaging Properties of Rice Protein Hydrolysates

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3605
Author(s):  
Hui-Ju Chen ◽  
Fan-Jhen Dai ◽  
Cheng-You Chen ◽  
Siao-Ling Fan ◽  
Ji-Hong Zheng ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Skin Aging ◽  
Protein Hydrolysates ◽  
Total Phenolic ◽  
Rice Protein ◽  
Potential Applications ◽  
Trolox Equivalent ◽  
Dose Dependent ◽  
Excellent Source ◽  
Reduction Capacity

Plant-derived protein hydrolysates have potential applications in nutrition. Rice protein hydrolysates (RPHs), an excellent source of proteins, have attracted attention for the development of cosmeceuticals. However, few studies have reported the potential application of RPH in analysis, and this study examined their antioxidant activities and the inhibitory activities of skin aging enzymes. The results indicated that the total phenolic and flavonoid concentrations were 2.06 ± 0.13 mg gallic acid equivalent/g RPHs and 25.96 ± 0.52 µg quercetin equivalent/g RPHs, respectively. RPHs demonstrated dose-dependent activity for scavenging free radicals from 1,1-diphenyl-2-picrylhydrazyl [half-maximal inhibitory concentration (IC50) = 42.58 ± 2.1 mg/g RPHs] and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (IC50 = 2.11 ± 0.88 mg/g RPHs), dose-dependent reduction capacity (6.95 ± 1.40 mg vitamin C equivalent/g RPHs) and oxygen radical absorbance capacity (473 µmol Trolox equivalent/g RPHs). The concentrations of the RPH solution required to achieve 50% inhibition of hyaluronidase and tyrosinase activities were determined to be 8.91 and 107.6 mg/mL, respectively. This study demonstrated that RPHs have antioxidant, antihyaluronidase, and antityrosinase activities for future cosmetic applications.

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