Xanthine Oxidase Activity of Milks in Relation to Stage of Lactation, Feed, and Incidence of Spontaneous Oxidation

Abstract
Xanthine oxidase activity of milk was in direct relationship to stage of lactation which was not altered when cows were changed from dry-lot feed to pasture. The incidence of spontaneous oxidized milk was markedly reduced on pasture. Dihydroquercetin inhibited spontaneous oxidation. Spontaneous oxidation is related.