Pteridines (Aug 1989)
Identification of Folates by Iodine Oxidation at Acid, Neutral and Alkaline pH
Abstract
Oxidation by iodine at pH 1.5, pH 7.0 with and without catalase and at pH 12.5, differentiated folic acid, 5- methyltetrahydrofolic acid, 10-formylfolic acid, 10-formyltetrahydrofolic acid and 5-formyltetrahydrofolic acid, when the products were assayed with Lactobacillus casei. This method is proposed as an alternative to differential microbiological assay for identifying folates.