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怎样煮藕才不会成黑色
更新时间: 2020-11-03 00:00:00  

煮藕不会成黑色的方法有:将去皮切开的莲藕放在清水或淡盐水中浸泡,使其与空气隔绝,可防止氧化变色;煮莲藕时切忌用铁锅,因为藕遇铁后变成蓝色或暗绿色。莲藕中含有单宁,又称鞣质。莲藕被去皮后容易发生氧化作用,单宁中的酚类产生醌的聚合物形成褐色素,也就是黑色素。

关键词: 怎样 黑色

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