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冷门知识 | 丰富你的知识储备

酸酸的柠檬其实是碱性食品

07 Sep 2022

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柠檬由于口感比较酸,因此很多人都把它当作酸性食品。但其实,柠檬具有高度碱性,不含糖的柠檬汁或柠檬水是对身体吸收很有帮助的碱性食品,可平衡体内环境的酸碱度。为什么柠檬水喝起来是酸的,pH值也是酸性,为何却有碱性食品之称呢?这是因为虽然柠檬水中含有柠檬酸,但可以在体内被完全代谢成水和二氧化碳。而二氧化碳会被呼出体外,酸性也随之被消灭了。而柠檬水中的钾、钙等金属离子,可以与酸根离子相结合,从而降低尿液的酸性,因此被称为碱性食品。

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