This International Standard specifies a method for the accurate determination of isolated trans bonds in natural or processed long-chain fatty acids,fatty acids esters and triglycerides with trans isomer levels≥5%.The method is not applicable,or is applicable only with specific precautions,to fats and oils containing high levels(over 5%)of conjugated unsaturation(e.g. Tung oil).materials containing functional groups which modify the intensity of the C-H deformation about the trans double bond [e.g.castor oil containing ricinoleic acid or its geometrical isomer,ricinoleic acid(12-hydroxy-9-octadecenoic acid)].mixed triglycerides having long-and short-chain m
EN ISO 13884:2005 history
2005EN ISO 13884:2005 Animal and vegetable fats and oils - Determination of isolated trans isomers by infrared spectrometry (ISO 13884:2003)