期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1211, 期 1-2, 页码 129-134出版社
ELSEVIER
DOI: 10.1016/j.chroma.2008.09.077
关键词
Epoxy acids; GC; Hydroxy acids; Hydrogenation; Keto acids; Solid-phase extraction
资金
- Ministerio de Educacion y Ciencia [AGL2007-62922]
- Junta de Andalucia
A method based on derivatization to fatty acid methyl esters and GC is proposed for the quantitative analysis of hydroxy acids, keto acids and epoxy acids in fats and oils. Isolation of the analytes by solid-phase extraction is proposed to prevent analytical interferences Caused by non-altered fatty acids naturally occurring in oils. In addition, hydrogenation is required before the GC analysis to improve repeatability. The analytical method was applied to thermoxidized samples of high linoleic sunflower oil, high oleic sunflower oil and high palmitic sunflower oil. Results showed total levels of these compounds in the order of mg/g of oil in samples with contents of polar compounds ranging from 6.7 to 25.7%. The compounds analyzed constituted major fractions of the oxidized fatty acids. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据