Issue 4, 2001

Determination of aliphatic alcohols, squalene, α-tocopherol and sterols in olive oils: direct method involving gas chromatography of the unsaponifiable fraction following silylation

Abstract

In general, analyses for aliphatic alcohols, sterols and tocopherols in vegetable oils are performed separately. A simple and reliable procedure is presented for the quantification of the alkanols, squalene, α-tocopherol and sterols in olive oils by a direct method involving gas chromatographic (GC) analysis of the unsaponifiable fraction after silylation. The method eliminates the need for a preliminary thin-layer chromatographic (TLC) fractionation prior to GC. External standard calibration with reference substances was used for the quantification of squalene, α-tocopherol and sterols and internal standard calibration for the quantification of aliphatic alcohols. The analyte recovery and the repeatability of the quantitative results were evaluated and were acceptable for routine use.

Article information

Article type
Paper
Submitted
31 Aug 2000
Accepted
23 Feb 2001
First published
20 Mar 2001

Analyst, 2001,126, 472-475

Determination of aliphatic alcohols, squalene, α-tocopherol and sterols in olive oils: direct method involving gas chromatography of the unsaponifiable fraction following silylation

J. Giacometti, Analyst, 2001, 126, 472 DOI: 10.1039/B007090O

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