ISO 12966-3:2016
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ISO 12966-3:2016
70249
No disponible en español

Estado : Publicado (En proceso de revisión)

Esta norma se revisó y confirmó por última vez en 2021. Por lo tanto, esta versión es la actual.
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Formato Idioma
std 1 42 PDF + ePub
std 2 42 Papel
  • CHF42
Convertir Franco suizo (CHF) a tu moneda

Resumen

ISO 12966-3:2016 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.

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Informaciones generales

  •  : Publicado
     : 2016-05
    : Norma Internacional confirmada [90.93]
  •  : 2
     : 4
  • ISO/TC 34/SC 11
    67.200.10 
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