Reference number
ISO 6866:1985
© ISO 2026
International Standard
ISO 6866:1985
Animal feeding stuffs — Determination of free and total gossypol
Edition 1
1985-11
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Published (Edition 1, 1985)
This publication was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 6866:1985

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CHF 44
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Abstract

The method is applicable to cottonseed and cottonseed meals and cakes. The method consists in extracting of the compound in the presence of 3-aminopropane-1-ol, either with a mexture of 2-propanol and hexane for the determination of free gossypol or with dimethylformamide for the determination of total gossypol. Conversion to gossypol-dianiline using aniline, and measurement of the absorbance at the wavelength of maximum absorbance (between 435 and 445 nm).

General information

  • Status
     : Published
    Publication date
     : 1985-11
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 3
  • Technical Committee :
    ISO/TC 34/SC 10
    ICS :
    65.120 
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