純Vc是還原劑，天然狀態是白色結晶。氧化後變黃失效。一般來說棕色瓶密封，可以幾十年有效。

來源: fuz 於 2022-10-17 13:42:09 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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