Abstract

The method consists in homogenizing the product, followed by quantitative entraining, by steam, of the acid present in a test portion, determination of the acid in the destillate obtained, either by spectrophotometry in the ultra-violet range (technique A) or by measuring by photocolorimetry or by spectrophotometry the pink colour obtained after oxidation by chromic acid and then treatment with thiobarbituric acid (technique B).


General information 

  • Status
     : Withdrawn
    Publication date
     : 1978-09
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee
     : ISO/TC 34/SC 3 Fruits and vegetables and their derived products
  • ICS
     :
    67.080.01 Fruits, vegetables and derived products in general

Life cycle

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  8. ISO 5519:1978