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The Comparative Value of Chocolate and Whole Milk as a Source of Riboflavin for the Rat

Department of Biology and Chemistry, Missouri Valley College, Marshall, Missouri

ABSTRACT

The comparative value of chocolate and whole milk as a source of riboflavin for the rat was investigated. Rats fed chocolate milk had the same rate of growth as rats fed whole milk when both milks were added to a basal diet deficient only in riboflavin. The rate of growth of rats receiving the basal diet supplemented with either milk also was the same as that of rats receiving supplements of crystalline riboflavin. Therefore, at the level of feeding used in this experiment, chocolate milk contains enough biologically available riboflavin to insure maximum growth of the rat. No evidence was found to indicate that the added chocolate interferes with the biological availability of riboflavin.

¹ Now at the University of Missouri, Columbia.

² Now at the University of Oklahoma, Oklahoma City.

³ Now at Raytown High School, Baytown, Mo.