中国乳业Issue(4)：85-90,6.DOI:10.12377/1671-4393.24.04.16
A2β-酪蛋白牛奶和普通牛奶的体外消化特性和抗氧化能力评价
Evaluation of In Vitro Digestive Characteristics and Antioxidant Capacity of A2β-casein Milk and Regular Milk
摘要
Abstract
[Objective] This study aims to investigate the effects of in vitro simulated gastrointestinal digestion on the molecular weight distribution and antioxidant activities of A2β-casein milk and regular milk. [Method] The pasteurized A2β-casein milk, ultra-high temperature sterilized A2β-casein milk, pasteurized regular milk, and ultrahigh temperature sterilized regular milk were used as materials. The milks were subjected to in vitro simulated gastrointestinal digestion using the INFOGEST 2.0 system. Molecular weight analysis of the milk samples before and after digestion was performed using SDS-PAGE and high-performance liquid chromatography, and the antioxidant activities of the samples post-digestion were measured. [Result] After in vitro simulated gastrointestinal digestion, the molecular weight of the four types of milk was mainly distributed in the <1 000 Da, with the proportion of components <500 Da in A2β-casein milk significantly lower than in regular milk. Ultra-high temperature sterilized regular milk and ultra-high temperature sterilized A2β-casein milk showed stronger ferric ion reducing antioxidant power and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity. [Conclusion] This study provided basic data for the processing and functional characteristics of various milk products.关键词
A2β-酪蛋白/普通牛奶/体外模拟胃肠消化/分子量/抗氧化能力Key words
A2β-casein milk/regular milk/in vitro simulated gastrointestinal digestion/molecular weight/antioxidant activity引用本文复制引用
窦佩佩,张慧娟,卢涵,袁庆彬,王世杰,罗永康..A2β-酪蛋白牛奶和普通牛奶的体外消化特性和抗氧化能力评价[J].中国乳业,2024,(4):85-90,6.基金项目
京津冀协同创新共同体建设专项(22342901D) （22342901D）
石家庄市引进国外智力项目(20230025) （20230025）
石家庄后补助奖励专项资金(226790217H) （226790217H）
