糖基化鲐鱼鱼松体外消化产物的抗氧化活性和氨基酸组成Antioxidant Activity and Amino Acid Composition of in vitro Digestive Products of Glycosylated Mackerel Fish Floss
施文正,陈晴,冯倩,姜昕,陆佳怡
摘要(Abstract):
【目的】探究糖基化对鲐鱼(Scomber japonicus)鱼松体外消化产物的抗氧化性及氨基酸组成的影响。【方法】对添加蔗糖、葡萄糖、木糖、果糖、半乳糖炒制的鱼松进行体外模拟消化,研究其一步及两步消化后鱼松消化率、消化产物粒径、抗氧化性及氨基酸组成,并通过消化产物的十二烷基硫酸钠-聚丙烯酰胺凝胶电泳进一步分析其消化率变化。【结果与结论】除木糖鱼松外,加蔗糖、葡萄糖、果糖和半乳糖的鱼松较未加糖鱼松均显著提高(P <0.05);粒径分析显示,经过胃肠两步消化产物分子直径相较于胃消化后的更小。抗氧化性分析显示,鱼松消化产物抗氧化性随着自身浓度的升高而升高,胃消化产物的抗氧化性高于胃肠消化产物,其中木糖鱼松消化产物的抗氧化性最强。从氨基酸组成分析可知,胃肠消化产物必需氨基酸占总氨基酸质量比均超过35%,营养价值较高,同时消化产物的抗氧化氨基酸占总氨基酸质量比超过80%,表明鱼松消化产物抗氧化活性与其氨基酸组成有关。
关键词(KeyWords): 鲐鱼;鱼松;糖基化;美拉德反应;体外消化;抗氧化性;氨基酸组成
基金项目(Foundation): 国家重点研发计划(2019YFD0902003)
作者(Author): 施文正,陈晴,冯倩,姜昕,陆佳怡
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