Potato Starch and Refection

Abstract
1. Refection occurs as a rule in rats receiving diets containing raw potato starch.2. Rats were maintained for one year on a diet deficient in the vitamin B complex and containing raw potato starch. Two of them attained a weight of almost 300 grm. and made sustained gains at a rate of almost 4 grm. daily.3. Rapid decline, symptoms of vitamin B1and B2deficiency and death were observed in these rats after their diet had been steamed.4. Steaming under identical conditions does not alter the vitamin B (complex) content of other diets.