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ISO 7847:1987

Animal and vegetable fats and oils — Determination of polyunsaturated fatty acids with a cis,cis 1,4-diene structure

Dec 10, 1987
95.99 Withdrawal of Standard   Jan 23, 2013

General information

95.99     Jan 23, 2013

ISO

ISO/TC 34/SC 11

International Standard

67.200.10  

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Scope

Specifies an enzymic method, which is not applicable to fats and oils containing polyunsaturated fatty acids of the omega-8 and omega-9 series or containing branched chain fatty acids. The method consists in saponifying of a test portion at ambient temperature followed by liberation of the fatty acids; enzymic oxidation of the fatty acids; measurement, at the wavelength of maximum absorbance (about 235 nm) of the absorbance due to these oxidized acids, while compensating for the absorbance due to any dienoic conjugated acids initially present in the sample.

Life cycle

NOW

WITHDRAWN
ISO 7847:1987
95.99 Withdrawal of Standard
Jan 23, 2013

National adoptions

SSH ISO 7847:2001  
DPS

Animal and vegetable fats and oils — Determination of polyunsaturated fatty acids with a cis,cis 1,4-diene structure

60.60 Standard published

DPS/KT 307 more