Determination of Individual Free Fatty Acids in Milk by Strong Anion-Exchange Resin and Gas Chromatography

A quantitative method for determination of free fatty acids in milk is described. Free fatty acids and some glycerides were extracted from milk in acetonitrile in the presence of sulfuric acid and anhydrous sodium sulfate. The filtered extract was evaporated to dryness. With use of strong anion-exch...

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Veröffentlicht in:	Journal of dairy science 1986-07, Vol.69 (7), p.1787-1792
Hauptverfasser:	Spangelo, Å., Karijord, Ø., Svensen, A., Abrahamsen, R.K.
Format:	Artikel
Sprache:	eng
Schlagworte:	acide gras libre acidos grasos libres analisis analyse analysis Animals anion aniones anions Biological and medical sciences Cattle chromatographie chromatography Chromatography, Gas - methods cromatografia echange d' ion Fatty Acids, Nonesterified - analysis Food industries free fatty acids Fundamental and applied biological sciences. Psychology intercambio ionico ion exchange lait leche Methylation milk Milk - analysis Milk and cheese industries. Ice creams
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Zusammenfassung:	A quantitative method for determination of free fatty acids in milk is described. Free fatty acids and some glycerides were extracted from milk in acetonitrile in the presence of sulfuric acid and anhydrous sodium sulfate. The filtered extract was evaporated to dryness. With use of strong anion-exchange resin as heterogenous basic catalysts, the free fatty acids were methylated directly. The free fatty acids were separated by gas chromatography with a 2000 mm×2-mm inner diameter glass column packed with 10% SP-2330 on 100/120 mesh Chromosorb W.
ISSN:	0022-0302 1525-3198
DOI:	10.3168/jds.S0022-0302(86)80602-6