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紫薯削皮过夜后是否还能食用
更新时间: 2020-09-21 00:00:00  

紫薯削皮过夜还能食用,没有问题。

紫薯削皮以后紫薯失去了保护层,容易氧化和变色。紫薯中含有叫做鞣酸、单宁酸的多酚类物质,这类物质在植物果肉组织中,叶片中均大量存在多酚比酚容易氧化得多,它们遇空气被氧化成醌,导致共轭体系的增大,吸收波长向可见光区域移动,于是显出“黑”色。但是如果没有发现霉变异味,还是可以吃的。

关键词: 过夜 是否 食用

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