SS-EN-ISO-12966-3 › Historical Revision Information
Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 3: Preparation of methyl esters using trimethylsulfonium hydroxide (TMSH) (ISO 12966-3:2009)
Document Center Inc. is an authorized dealer of SIS standards.
The following bibliographic material is provided to assist you with your purchasing decision:
The following bibliographic material is provided to assist you with your purchasing decision:
This part of ISO 12966 specifies a rapid base-catalysed transesterification method for fats and oils with trimethylsulfonium hydroxide (TMSH) to prepare fatty acid methyl esters. The method is exclusively applicable to the preparation of methyl esters of fats and oils for gas liquid chromatographic (GLC) analysis. It is applicable to all fats and oils including milk fat and blends containing milk fat. Isomerization of unsaturated fatty acids only occurs to a minor extent and isomerized fatty acids are only present at the determination limit. As isomerization takes place, the procedure is not recommended for conjugated linoleic acid (CLA). As CLA is not correctly analysed, this method is not applicable to the determination of the complete fatty acid composition of milk fat samples.Only about 70 % to 80 % of the free fatty acids are esterified. In the case of conjugated cyclopropyl and cyclopropenyl fatty acids, side reactions may occur, but these do not interfere with the determination of the fatty acids. NOTE This part of ISO 12966 is based upon German Standard Method C-VI 11e (98) (see Reference [8]).
To find similar documents by classification:
67.200.10 (Animal and vegetable fats and oils Butter, see 67.100.20)
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
Designation Name
SS-EN ISO 12966-3:2009
Revision Level
2009 EDITION
Status
Superseded
Publication Date
Dec. 21, 2009
Language(s)
English
Page Count
16
International Equivalent
EN ISO 12966-3:2009(IDT); ISO 12966-3:2009(IDT)