炒青菜不會變黃，但是煮青菜會變黃。維持葉綠素的綠色靠的是青菜內的鎂離子，一旦鎂離子溶解了進入了湯裏，綠色就不能維持了。

來源: 禦用文人於 2016-10-13 12:18:44 [舊帖] [給我悄悄話] 本文已被閱讀：次

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