天气预报 > 其他 > 请问山药怎样才不变色
请问山药怎样才不变色
更新时间: 2020-09-15 00:00:00  

方法:

山药切片后需立即浸泡在盐水中,可防止氧化发黑;山药泡在加了醋的冷水里或者泡在柠檬水里,等烹饪时再捞出滗水,这样即使不马上食用,山药也不会变黑了。山药变色原因:

山药里面的酚类物质和空气中的氧气接触后被氧化,生成了带有颜色的醌类物质,山药切片后只要不与空气直接接触就不会变黑了。

关键词: 请问 山药 怎样 变色

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