[Liver concentrations of water-soluble vitamins in rats treated, alone or in combination, with potassium metabisulfite, tannic acid, and ethanol].

Rats given tannic acid (3.2 p. 100 in diet) have lower biotin and total ascorbic acid liver contents (after 2 months), later they have higher vitamin B6 contents (after 6 months on the same diet). After 6 months riboflavin liver content is higher when ethanol replaces an equal amount of carbohydrate energy; this effect is reinforced by tannic acid. However liver vitamins contents was not affected by bisulfite.