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ISO 6557-1:1986

Fruits, vegetables and derived products -- Determination of ascorbic acid -- Part 1: Reference method

This standard has been reviewed and then confirmed in 2010 
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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).

 

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