ISO 7847:1987

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

Publication date: 10 dhj 1987

95.99 Withdrawal of Standard 23 jan 2013

General information

Current stage: 95.99 Effective date: 23 jan 2013

Originator: ISO

Owner: ISO/TC 34/SC 11

Type: International Standard

ICS: 67.200.10

Gjuha: frëngjisht anglisht

Buying

Statusi: Shfuqizuar

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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WITHDRAWN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
23 jan 2013

National adoptions

SSH ISO 7847:2001

DPS

Vajra dhe yndyrna bimore dhe shtazore - Percaktimi I acideve yndyrore te shume te pangopura me strukture cis, 1,4 - dienike.

60.60 Standard published

DPS/KT 307 më tepër