Calcium and wine

Grapevines, too, need their calcium, and they share it with humans through wine. Soil rich in calcium, magnesium, potassium, and sodium makes for healthy vines. A grape can contain 14 mg of calcium. (Compare that with its 4 mg of vitamin C.)

Thus, grape juice contains calcium, and wine contains even more after the wine-making process. A clay-filtration step can add calcium, as can a finishing with calcium bicarbonate to soften an overly acidic cru

You can find 43 mg (between 1-4% DV) of calcium in a glass of wine.  This is about half the amount found in a glass of Gerolsteiner mineral water.  Since wine doesn’t contain any protein, however, it’s still not advisable to go pour yourself a bottle for dinner.  Alas!

WORKS CONSULTED

Forkaš, Ján, Technology and Biochemistry of Wine.  New York: Gordon and Breach Science Publishers, 1988.

Puckette, Madeline, https//winefolly.com/review/wine-additives-explained/

Haas, Jason, https://tablascreek.typepad.com/tablas/2010/05/why-limestone-matters-for-viticulture.html