A database of chromatographic properties and mass spectra of fatty acid methyl esters from omega-3 products

Add time:07/31/2019    Source:sciencedirect.com

Fatty acids in products claimed to contain oils with the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were analyzed as fatty acid methyl esters by gas chromatography–mass spectrometry using electron impact ionization. To cover the variation in products on the market, the 20 products that were studied in detail were selected from a larger sample set by statistical methodology. The samples were analyzed on two different stationary phases (polyethylene glycol and cyanopropyl) and the fatty acid methyl esters were identified by methodology that combines the mass spectra and retention indices into a single score value. More that 100 fatty acids had a chromatographic area above 0.1% of the total, in at least one product. Retention indices are reported as equivalent chain lengths, and overlap patterns on the two columns are discussed. Both columns were found suitable for analysis of major and nutritionally important fatty acids, but the large number of minor compounds that may act as interferents will be problematic if low limits of quantification are required in analyses of similar sample types. A database of mass spectral libraries and equivalent chain lengths of the detected compounds has been compiled and is available online.

We also recommend Trading Suppliers and Manufacturers of 4,8,12-Trimethyltridecanoic acid methyl ester (cas 10339-74-9). Pls Click Website Link as below: cas 10339-74-9 suppliers

Prev:Evaluation of the retention pattern on ionic liquid columns for gas chromatographic analyses of fatty acid methyl esters
Next:Profiles of fatty acids and 7-O-acyl okadaic acid esters in bivalves: Can bacteria be involved in acyl esterification of okadaic acid?)