The determination of ascorbic acid in the presence of interfering substances, notably reductones
- 1 December 1943
- journal article
- research article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 37 (6) , 714-716
- https://doi.org/10.1042/bj0370714
Abstract
Ascorbic acid is inert to indophenol or iodine in presence of 20% or 29% HC1, respectively, but on dilution with water the usual reaction occurs. Indophenol is reduced in presence of 20% HC1 by glucoreductone and other interfering substances. Ascorbic acid detn. in the presence of glucoreductone by a differential titration method is described. It is suggested that, in presence of moderately concentrated HC1, ascorbic acid exists as the unreducing keto-form.This publication has 1 reference indexed in Scilit:
- Observations on the estimation of ascorbic acid by titrationBiochemical Journal, 1935