Haha…Because eggshells are almost entirely calcium carbonate

來源: Leo5568 於 2023-08-04 14:14:27 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (1407 bytes)
回答: 雞蛋殼。。 由 borisg 於 2023-08-03 18:03:56

half of one eggshell provides 1,000 mg of calcium – enough to meet the daily requirements for adults.

In addition to calcium and protein, eggshells also contain small amounts of other minerals, including strontium, fluoride, magnesium and selenium.

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