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ISO 6866:1985

Animal feeding stuffs — Determination of free and total gossypol

Nov 14, 1985

General information

90.93     Dec 11, 2021

ISO

ISO/TC 34/SC 10

International Standard

65.120  

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Scope

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).

Life cycle

NOW

PUBLISHED
ISO 6866:1985
90.93 Standard confirmed
Dec 11, 2021