The method consists in homogenizing the product, followed by dilution and acidification of a test portion, extraction of the acid by diethyl ether, then alkaline re-extraction of this acid and purifying by oxidation using acidified potassium dichromate, determination of the acid with a suitable spectrophotometer. The method cannot be applied in the presence of p-chlorobenzoic acid and cinnamic acid, respectively.

General information

  • Status :  Withdrawn
    Publication date : 1978-05
  • Edition : 1
    Number of pages : 3
  • :
    ISO/TC 34/SC 3
    Fruits and vegetables and their derived products
  • 67.080.01
    Fruits, vegetables and derived products in general

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