Silver ion high-performance liquid chromatography of the triacylglycerols ofCrepis alpina seed oil View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1994-08

AUTHORS

W. E. Neff, R. O. Adlof, M. El-Agaimy

ABSTRACT

The triacylglycerols ofCrepis alpina oil were characterized because this oil has a high concentration of crepenynic (cis-9-octadecen-12-ynoic) acid, a fatty acid useful in the chemical synthesis of deuterated fats for human metabolism studies. The triacylglycerols were separated from the crude oil by solid-phase extraction. Resolution, quantitation and isolation of the individual triacylglycerols were performed by silver ion high-performance liquid chromatography on a commercial column, an acetonitrile in hexane isocratic mobile phase and flame-ionization detection. Isolated triacylglycerols were identified by capillary gas chromatography of their fatty acid methyl esters. Of the eleven eluted triacylglycerols ofCrepis alpina oil, 85% included 35% tricrepenynoyl, 34% linoleoyldicrepenynoyl and 16% dilinoleoylcrepenynoyl glycerols. Triacylglycerols eluted according to the numbers of alkene and alkyne bonds. Elution times, resolution and quantitation were reproducible over a three-month period. The flame-ionization detector response required no response factors for quantitation of the triacylglycerols present inCrepis alpina oil. The silver ion chromatography system permitted the identification of 95% of the triacylglycerols compared to 70% of the triacylglycerols previously identified with reversed-phase high-performance liquid chromatography. More... »

PAGES

853-855

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02540461

DOI

http://dx.doi.org/10.1007/bf02540461

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1020043687


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