| 快速气相色谱法测定食用油中的未衍生化长链脂肪酸 |
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| 引用本文： | 孟哲,文大为,廖一平,刘虎威.快速气相色谱法测定食用油中的未衍生化长链脂肪酸[J].色谱,2007,25(2):254-257. |
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| 作者姓名： | 孟哲 文大为 廖一平 刘虎威 |
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| 作者单位： | 1.College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;2.Department of Biochemistry, Xingtai University, Xingtai 054001, China |
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| 摘 要： | 建立了利用短的微径色谱柱直接测定食用油中未衍生化长链脂肪酸的快速气相色谱方法。C12~C22脂肪酸在2 min之内实现基线分离，定量标准曲线的相关系数大于0.988，最低检测限（S/N=3）为2.80~9.60 mg/L,回收率为74.5%~86.5%。该方法快速、简便、准确，分析通量大，已成功地用于香油、色拉油及调和油等3种食用油中长链脂肪酸含量的测定。
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| 关 键 词： | 快速气相色谱法 非衍生化 长链脂肪酸 食用油 |
| 文章编号： | 1000-8713（2007）02-0254-04 |
| 收稿时间： | 2006-08-21 |
| 修稿时间： | 08 21 2006 12:00AM |
Determination of Underivatized Long-Chain Fatty Acids in Edible Oils by Fast Gas Chromatography |
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| MENG Zhe,WEN Dawei,LIAO Yiping,LIU Huwei.Determination of Underivatized Long-Chain Fatty Acids in Edible Oils by Fast Gas Chromatography[J].Chinese Journal of Chromatography,2007,25(2):254-257. |
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| Authors: | MENG Zhe WEN Dawei LIAO Yiping LIU Huwei |
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| Institution: | 1.College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;2.Department of Biochemistry, Xingtai University, Xingtai 054001, China |
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| Abstract: | A fast gas chromatography (GC) method with short micro-bore capillary column was developed for the determination of underivatized long-chain fatty acids (LCFAs) in edible oils. Baseline separation of eight kinds of LCFAs (dodecanoic acid, tetradecanoic acid, palmitic acid, oleic acid, stearic acid, eicosanic acid, erudcic acid, behenic acid) was achieved within 2 min with high resolution performance. The linear correlation coefficients for underivatized LCFAs were higher than 0. 988 and detection limits (at signal-to-noise of 3:1 ) were 2. 80 -9. 60 mg/L. The method is easy and low-cost and has the ability to achieve an accurate determination of the LCFAs in three edible oils. |
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| Keywords: | fast gas chromatography(FGC) underivatization long-chain fatty acids(LCFAs) edible oils |
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