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DIN EN ISO 12966-3
English -- Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 3: Preparation of methyl esters using trimethylsulfonium hydroxide (TMSH) (ISO 12966-3:2016);
German -- Tierische und pflanzliche Fette und Oele - Gaschromatographie von Fettsaeuremethylestern - Teil 3: Herstellung von Methylestern mittels Trimethylsulfoniumhydroxid (TMSH) (ISO 12966-3:2016)
Organization:
DIN - Deutsches Institut fš?r Normung e. V.
Year: 2016
Abstract: Scope: 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, but excluding those coming from milk and milk products. 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). 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]).
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DIN EN ISO 12966-3
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| contributor author | DIN - Deutsches Institut fš?r Normung e. V. | |
| date accessioned | 2017-10-18T11:06:45Z | |
| date available | 2017-10-18T11:06:45Z | |
| date copyright | 2016.11.01 | |
| date issued | 2016 | |
| identifier other | TMZOSFAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsessioutho4703177793325273135A68A10958014A0Fa/handle/yse/235121 | |
| description abstract | Scope: 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, but excluding those coming from milk and milk products. 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). 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]). | |
| language | English | |
| title | DIN EN ISO 12966-3 | num |
| title | English -- Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 3: Preparation of methyl esters using trimethylsulfonium hydroxide (TMSH) (ISO 12966-3:2016) | en |
| title | German -- Tierische und pflanzliche Fette und Oele - Gaschromatographie von Fettsaeuremethylestern - Teil 3: Herstellung von Methylestern mittels Trimethylsulfoniumhydroxid (TMSH) (ISO 12966-3:2016) | other |
| type | standard | |
| page | 12 | |
| status | Active | |
| tree | DIN - Deutsches Institut fš?r Normung e. V.:;2016 | |
| contenttype | fulltext |