| タイトル |
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en
GC Separation of cis-Eicosenoic Acid Positional Isomers on an Ionic Liquid SLB-IL100 Stationary Phase
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| 作成者 |
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| アクセス権 |
open access |
| 権利情報 |
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en
The original publication is available at springerlink.com.
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| 主題 |
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Other
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GC
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Other
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Eicosenoic acid
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Other
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Ionic liquid
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Other
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SLB-IL100
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Other
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Fatty acid
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Other
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Fish oil
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Other
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Flathead flounder
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Other
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Herring
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Other
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Methyl ester
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NDC
668
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| 内容注記 |
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Abstract
en
Gas chromatography (GC) of cis-eicosenoic acid (20:1) positional isomers has been investigated on a capillary column of ionic liquid 1,9-di(3-vinyl-imidazolium)nonane bis(trifluoromethyl)sulfonylimidate stationary phase (SLB-IL100). A test mixture of isomeric 20:1 methyl esters was prepared from flathead flounder flesh lipids. On a 60-m column operated at 150-180 °C, six peaks appeared in the elution order of 20:ln-15 → 20:ln-13 → 20:ln-11 → 20:ln-9 → 20:ln-7 → 20:ln-5. These peaks were baseline resolved within 20 min at 180 °C. The 20:ln-13 and 20:ln-11 isomers, poorly resolved on conventional polar polysiloxane stationary phases, were completely separated from each other with separation factor α = 1.02 and peak resolution (Rs) >- 1.57. When equivalent chain length (ECL) values were compared between the SLB-IL100 and CP-Sil 88 (biscyanopropyl polysiloxane), those of 20:ln-15 and 20:ln-13 exceptionally tended to be lower on the SLB-IL100. The excellent separation of 20:1 isomers seems due to less retention of 20:ln-15 and 20:ln-13 on SLB-IL100 rather than simply due to its high polarity. Analysis of herring oil 20:1 revealed the occurrence of 20:ln-13 in the Pacific herring but not in the Atlantic herring. The ionic liquid stationary phase, SLB-IL100, is effective for analyzing 20:1 isomers occurring in fish and other natural oils.
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| 出版者 |
en
Springer
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| 日付 |
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| 言語 |
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| 資源タイプ |
journal article |
| 出版タイプ |
AM |
| 資源識別子 |
HDL
http://hdl.handle.net/2115/44587
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| 関連 |
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isVersionOf
DOI
https://doi.org/10.1007/s11746-010-1733-4
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| 収録誌情報 |
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PISSN
0003-021X
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EISSN
1558-9331
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en
Journal of the American Oil Chemists' Society
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巻88
号6
開始ページ743
終了ページ748
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| ファイル |
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| コンテンツ更新日時 |
2023-07-26 |
