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Determination of the enantiomeric composition of γ-lactones in edible oils by on-line coupled high performance liquid chromatography and gas chromatography

AuthorsRuiz del Castillo, M. Luisa ; Herraiz Carasa, Marta ; Blanch, Gracia P.
Issue Date2000
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 48: 1186- 1190 (2000)
AbstractA new method is proposed for the determination of the enantiomeric composition of γ-lactones in different vegetable edible oils (i.e., olive oil, almond oil, hazelnut oil, peanut oil, and walnut oil), and its potential for authenticity control is underlined for a limited number of samples. The method is based on the direct injection (i.e., without requiring a sample pretreatment step) in on-line coupled reversed phase liquid chromatography to gas chromatography (RPLC-GC) using a chiral stationary phase in the GC-step. Different experimental values for both speed of sample introduction into GC and volume of the transferred fraction are considered to improve the recoveries obtained. Relative standard deviations lower than 10% and detection limits ranging from 0.06 to 0.22 mg/L were achieved for the investigated γ-lactones.
Identifiersdoi: 10.1021/jf990655n
issn: 0021-8561
Appears in Collections:(IF) Artículos
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