NBN EN ISO 16931:2009

Animal and vegetable fats and oils - Determination of polymerized triacylglycerols by high-performance size-exclusion chromatography (HPSEC) (ISO 16931:2009)

ACTIVE

About this standard

Languages
German, English and French
Type
NBN
Standards committee
CEN/TC 307
Status
ACTIVE
Publication date
15 June 2009
Replaces
EN ISO 16931:2001
ICS Code
67.200.10 (Animal and vegetable fats and oils)
Withdrawn Date

About this training

Summary

ISO 16931:2009 specifies a method using high-performance size-exclusion chromatography (HPSEC) to determine the contents, as mass fractions, of polymerized triacylglycerols (PTAGs) in oils and fats which contain at least 3 % (from peak areas) of these polymers. PTAGs (strictly speaking dimeric and oligomeric triacylglycerols) are formed during the heating of fats and oils, and thus, the method serves to assess the thermal deterioration of frying fats after use.
This method is applicable to frying fats and fats and oils that have been thermally treated, provided that the content of PTAGs is at least 3 %. It can also be applied to the determination of polymers in fats for animal feedstuffs, although in this case, the extraction method used can have an influence on the result.