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过夜的红薯汤为什么变绿

更新时间: 2020-10-24 00:00:00     

过夜的红薯汤变绿的原因是由于褐变导致的,褐变是一种正常的化学现象,多发生在水果蔬菜等新鲜植物性食物中,是酚酶催化酚类物质形成醌及其聚合物的结果。植物组织中含有酚类物质,在完整的细胞中作为呼吸传递物质,在正常的情况下,氧化还原反应之间,一般正常的褐变是无毒无害的。

关键词: 过夜 红薯 为什么

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