Fruits, vegetables and derived products — Determination of ascorbic acid — Part 1: Reference method
NORMA vydaná dňa 9.10.1986
Označenie normy: ISO 6557-1:1986
Dátum vydania normy: 9.10.1986
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: The method uses the molecular fluorescence spectrometry for the determination of the combined ascorbic and dehydroascorbic acid content. It consists in transforming ascorbic acid into dehydrascorbic acid using activated charcoal, and reacting this with o-phenylendiamine (OPDA).