天气预报 > 其他 > 苹果削皮后能放一天吗
苹果削皮后能放一天吗
更新时间: 2020-11-05 00:00:00  

苹果削皮后不建议放一天,苹果被削皮后十几分钟后就会出现氧化反应,且放置太久容易滋生细菌。苹果切口氧化变颜色的现象叫做酶促褐变,主要是苹果中的多酚氧化酶把酚类底物氧化为醌类,醌聚合成为褐色素而引起组织褐变。

关键词: 苹果

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