Determination of the Relative Concentrations of the Major Aldehydes in Lemon, Orange and Grapefruit Oils by Gas Chromatographyb

Autor:	Laurence A. Rolle, W. L. Stanley, Sadie H. Vannier, Robert M. Ikeda
Rok vydání:	1961
Předmět:	Isopentane chemistry.chemical_compound Chromatography chemistry Reagent Acetal Lemon oil Organic chemistry Orange (colour) Gas chromatography Citral Food Science
Zdroj:	Journal of Food Science. 26:43-48
ISSN:	1750-3841 0022-1147
Popis:	SUMMARY The Girard-T reagent was used to recover the aldehydes from cold-pressed lemon, orange and grapefruit oils for subsequent quantitative gas chromatographic analysis. Optimum conditions for analysis were worked out with a known mixture of citral and the saturated aliphatic aldehydes which occur in major concentration in lemon oil. Isopropanol was used in the preparative step to eliminate acetal formation and isopentane in the final extractions to reduce losses of the lower-molecular-weight aldehydes during vacuum concentration of the sample for gas chromatographic analysis. Typical analyses are given for samples of domestic cold-pressed citrus oils.
Databáze:	OpenAIRE
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