乳业科学与技术2025，Vol.48Issue(4)：1-9,9.DOI:10.7506/rykxyjs1671-5187-20250320-021
富硒生物转化对羊乳酪蛋白组成及品质特性的影响
Effects of Selenium Biotransformation on Composition and Quality Properties of Goat Milk Casein
摘要
Abstract
This study investigated the effects of selenium biotransformation on the composition,structure,functional properties,and in vitro antioxidant activity of goat milk casein,as well as its gastrointestinal digestibility properties and selenium bioavailability.The results showed that the total selenium content in selenium-enriched goat milk casein was 498.21 μg/100 g,with organic selenium comprising up to 99.92%.Selenium transformation did not induce significant changes in the major composition of goat milk casein,and although the secondary structure of the protein and certain functional properties exhibited minor alterations,the overall stability was maintained.The antioxidant activity of selenium-enriched goat milk casein was positively correlated with protein concentration and selenium content.Upon reaching a specific threshold of protein concentration,its antioxidant capacity was significantly superior to that of ordinary goat milk casein.In vitro simulated gastrointestinal digestion showed that selenium transformation did not significantly influence the digestibility of goat milk casein,with its selenium bioavailability reaching as high as 90.75%.Moreover,the antioxidant activity of the digestion products was further enhanced and significantly better than that of the non-selenium-enriched group.Comprehensive analysis revealed that selenium-enriched goat milk casein possessed a high organic selenium content,good protein structure and functional stability,superior antioxidant activity,favorable digestion characteristics,and high selenium bioavailability,thereby positioning it as a promising high-value-added functional selenium-enriched milk protein product.关键词
富硒羊乳/富硒酪蛋白/功能特性/抗氧化活性/胃肠消化特性Key words
selenium-enriched goat milk/selenium-enriched casein/functional properties/antioxidant activity/gastrointestinal digestive properties分类
轻工纺织引用本文复制引用
马希,刘清清,陈瑾,李斌,张颖,曹炜,赵东林,孙秋勃,彭德举..富硒生物转化对羊乳酪蛋白组成及品质特性的影响[J].乳业科学与技术,2025,48(4):1-9,9.基金项目
陕西省重点研发计划项目(2025NC-YBXM-299 （）
2024NC-YBXM-173) （）
陕西省秦创原"科学家+工程师"队伍建设项目(2025QCY-KXJ-113) （2025QCY-KXJ-113）
国家自然科学基金青年科学基金项目(32002239) （32002239）
