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| Determination of Phytosterols in Vegetable Oils by Gas Chromatography-Mass Spectrometry |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:Vegetable-oils phytosterols mass fragmentation rule gas chromatography-mass spectrometry(GC-MS) |
| Author | Institution |
| 钟巧莉，朱志鑫，吴惠勤，黄晓兰，林晓珊，黄芳，冉文清，马丽果，刘敏 |
中国广州分析测试中心广东省分析测试技术公共实验室 |
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| Abstract: |
| A gas chromatography-mass spectrometric(GC-MS) method was established for the determination of four main kinds of phytosterols(e.g.brassicasterol,campesterol,stigmasterol and β sitosterol) in vegetable oils.The phytosterols were transformed to the corresponding TMS derivatives and subsequently analyzed by GC-MS.The mass spectrometric fragmentation rule and mass characteristic ions of the derivatives were also studied.The method is accurate,reliable and convenient，and the detection limit was 0.01 g/kg.It was applied in the qualitative and quantitative determination of phytosterols in vegetable oils with satisfactory results. |
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