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为什么莲藕炒了会变黑

更新时间: 2020-11-11 00:00:00     

莲藕炒了会变黑,因为莲藕中含有一种化学成分,即单宁,又称鞣质。变色的原因是由于氧化作用。为了防止变色,可将去皮切开的果蔬放在清水或淡盐水中浸泡,使其与空气隔绝。炒藕时,若边炒边略加清水,不但好炒,而且藕丝又白又嫩。

关键词: 为什么 莲藕

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