Norm

NEN-ISO 21846:2018 en

Plantaardige vetten en oliën - Bepaling van de samenstelling van triacylglycerolen en samenstelling en gehalte van diacylglycerolen door capillaire gaschromatografie

80,61 97,54 Incl BTW

Over deze norm

Status Definitief
Aantal pagina's 13
Commissie Plantaardige en dierlijke oliën en vetten
Gepubliceerd op 01-08-2018
Taal Engels
NEN-ISO 21846 specifies the determination of composition of triacylglycerols and the determination of the composition and content of diacylglycerols by capillary gas chromatography in vegetable oils with a lauric acid content below 1 %. Applying certain technological processing 1,2-diacylglycerols (1,2-DAGs) are transformed to the more stable isomeric 1,3-diacylglycerols (1,3-DAGs) due to acidic catalysed reaction. During storage, the speed and amount of this rearrangement depends on the acidity of the oil. The transformation normally reaches an equilibrium between the two isomeric forms. The relative amount of 1,2-DAGs is related to oil freshness or to a possible technological treatment. Therefore, it is possible to use the ratio of 1,2-DAGs to 1,3-DAGs as a quality criterion for vegetable fats and oils. The triacylglycerols profile is of potential interest for the fingerprint of each vegetable oil and may help the detection of certain types of adulteration, such as the addition of high oleic sunflower oil or palm olein in olive oil.

Details

ICS-code 67.200.10
Nederlandse titel Plantaardige vetten en oliën - Bepaling van de samenstelling van triacylglycerolen en samenstelling en gehalte van diacylglycerolen door capillaire gaschromatografie
Engelse titel Vegetable fats and oils - Determination of composition of triacylglycerols and composition and content of diacylglycerols by capillary gas chromatography

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