IODINE AS AN OXIDANT FOR THE DETERMINATION OF TOTAL ASCORBIC ACID IN VEGETABLES
- VernacularTitle:用碘作蔬菜中维生素C测定的氧化剂
- Author:
Chengtsai KUO
;
Chien MIAO
;
Lien KUAN
;
Benmou CHEN
- Publication Type:Journal Article
- From:
Acta Nutrimenta Sinica
1956;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Iodine was used as an oxidant instead of brimine in the 2,4-dinitro-phenylhydrazine method for the determination of total ascorbic acid content in vegetables. The excess of iodine was removed with a small amount of crystalline thiourea. This process of oxidation was simple, safe and rapid.With this modified method, the ascorbic acid content of 18 vegetables were determined. The ascorbic acid values thus obtained with iodine were sometimes slightly lower than those with bromine, but were higher than those with paper chromatographic method.
