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煮红小豆水为什么变黑

更新时间: 2020-10-04 00:00:00     

红小豆为"心之谷",其功用为"生津液,利小便,消胀,除肿,上吐",并治"下痢、解酒毒,除寒热痛肿,排脓散血,而通乳汁”。

煮红小豆水变黑的原因:

1、豆子本身外皮中含有色素,当豆子与水接触,慢慢的皮中的色素就会与水相容而产生与之相应的颜色;

2、当水加热时豆子中的色素分泌更快,煮豆子后水的颜色会更浓;

3、红小豆的表皮为红色,用水煮之后水和红豆皮就变成深红色,发黑。

关键词: 红小豆 为什么

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