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如何让切片的土豆片不变黑
更新时间: 2020-10-13 00:00:00  

1、与空气隔绝:可将去皮切开的果蔬放在清水或淡盐水中浸泡。土豆中含有单宁又称鞣质,由于氧化作用,单宁中的酚类产生醌的聚合物形成黑色素。

2、煮土豆时切忌使用铁锅,以用砂锅或不锈钢锅为宜。

3、切时最好使用不锈钢刀,鞣质与金属接触会生成深色的鞣质盐。

关键词: 如何 切片 土豆

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