天气预报 > 其他 > 土豆切后隔天变色还能吃吗
土豆切后隔天变色还能吃吗
更新时间: 2020-11-04 00:00:00  

土豆切后隔天变色还是可以吃的,这是酚类发生了快速的氧化作用。当土豆削皮后,植物细胞中的酚类物质便在酚酶的作用下,与空气中的氧化合,产生大量的醌类物质。新生的醌类物质能使植物细胞迅速的变成褐色,这种变化称为食物的酶促褐变。

关键词: 土豆 变色

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