期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 156, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2022.113073
关键词
Myofibrillar protein; Phenolic compounds; Structural; Gel properties; Interaction
资金
- National Natural Science Foun-dation of China [31972074]
- Innovative Research Team Construc-tion Project for Modern Agricultural Industry Common Key Technologies of Guangdong Province [2021KJ117]
- Guangdong Province Agriculture Research Project & Agricultural Technique Promotion Project [2021KJ103]
The study found that phenolic compounds can delay structural changes in myofibrillar protein during oxidation, altering protein gelation behavior and reducing sensitivity to hydroxyl radicals. Quercetin-modified protein exhibited the best microstructure, while caffeic acid modification significantly decreased gel strength and properties.
In this study, five phenolic compounds, including quercetin, rutin, caffeic acid, cyanidin-3-O-glucoside, and cyanidin-3-O-rutinoside, were added into myofibrillar protein (MP) suspensions to study their effects on the structural and gelation properties of protein when exposed hydroxyl radicals. Results showed that phenols delayed the changes of MP structure during of MP oxidation, including carbonylation, conversion of sulfhydryl to disulfide bond, and reduction of epsilon-NH2 group, thus changing the gelation behavior of MP. Most phenols can effectively weaken the sensitivity of MP to hydroxyl radicals and improve the gel properties of MP after oxidation. Among all samples, the quercetin-modified MP gel exhibited a dense and uniform microstructure, even better than the non-oxidized MP gel. However, perhaps due to the excessive unfold of MP structure, the gel strength, water holding capacity (WHC) and elastic modulus (G ') of MP decreased significantly after caffeic acid modification, and the gel microstructure was also collapsed.
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