Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids.
Thespesia populnea belongs to the plant family of Malvaceae which contain cyclopropane and cyclopropene fatty acids. However, previous literature reports vary regarding the content of these compounds in Thespesia populnea seed oil. In this work, the content of malvalic acid (8,9- methylene-9-heptad...
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WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
2011
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my.utp.eprints.55612017-01-19T08:22:49Z Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. Knothe, Gerhard Rashid, Umer Yusup, Suzana Anwar, Farooq TP Chemical technology Thespesia populnea belongs to the plant family of Malvaceae which contain cyclopropane and cyclopropene fatty acids. However, previous literature reports vary regarding the content of these compounds in Thespesia populnea seed oil. In this work, the content of malvalic acid (8,9- methylene-9-heptadecenoic acid) in the fatty acid profile of Thespesia populnea seed oil was approximately 7% by gas chromatography. Two cyclopropane fatty acids were identified, including dihydrosterculic acid. The methyl and picolinyl esters of Thespesia populnea seed oil were also prepared. The mass spectrum of picolinyl malvalate was more closely investigated, especially an ion at m/e 279, which does not fit the typical series of ions observed in picolinyl esters. It is shown that this ion is caused by cleavage at the picolinyl moiety and contains the fatty acid chain without the picolinyl moiety. This type of cleavage has previously not been observed prominently in picolinyl esters and may therefore be diagnostic for picolinyl esters of cyclopropene fatty acids. The NMR spectra of Thespesia populnea methyl esters are also discussed. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 2011-04-12 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/5561/1/Thespesia_Fatty_Acid_%28Accepted%2C2011%2CEJLST%29.pdf http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291438-9312 Knothe, Gerhard and Rashid, Umer and Yusup, Suzana and Anwar, Farooq (2011) Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. [Citation Index Journal] (In Press) http://eprints.utp.edu.my/5561/ |
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TP Chemical technology Knothe, Gerhard Rashid, Umer Yusup, Suzana Anwar, Farooq Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. |
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Thespesia populnea belongs to the plant family of Malvaceae which contain cyclopropane and cyclopropene fatty acids. However, previous literature reports vary regarding the content of these compounds in Thespesia populnea seed oil. In this work, the content of malvalic acid (8,9-
methylene-9-heptadecenoic acid) in the fatty acid profile of Thespesia populnea seed oil was approximately 7% by gas chromatography. Two cyclopropane fatty acids were identified, including dihydrosterculic acid. The methyl and picolinyl esters of Thespesia populnea seed oil were also prepared. The mass spectrum of picolinyl malvalate was more closely investigated, especially an ion at m/e 279, which does not fit the typical series of ions observed in picolinyl esters. It is shown that this ion is caused by cleavage at the picolinyl moiety and contains the
fatty acid chain without the picolinyl moiety. This type of cleavage has previously not been observed prominently in picolinyl esters and may therefore be diagnostic for picolinyl esters of cyclopropene fatty acids. The NMR spectra of Thespesia populnea methyl esters are also
discussed. |
format |
Citation Index Journal |
author |
Knothe, Gerhard Rashid, Umer Yusup, Suzana Anwar, Farooq |
author_facet |
Knothe, Gerhard Rashid, Umer Yusup, Suzana Anwar, Farooq |
author_sort |
Knothe, Gerhard |
title |
Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. |
title_short |
Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. |
title_full |
Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. |
title_fullStr |
Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. |
title_full_unstemmed |
Fatty Acids of Thespesia populnea. Mass Spectrometry of Picolinyl Esters of Cyclopropene Fatty Acids. |
title_sort |
fatty acids of thespesia populnea. mass spectrometry of picolinyl esters of cyclopropene fatty acids. |
publisher |
WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
publishDate |
2011 |
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http://eprints.utp.edu.my/5561/1/Thespesia_Fatty_Acid_%28Accepted%2C2011%2CEJLST%29.pdf http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291438-9312 http://eprints.utp.edu.my/5561/ |
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1738655415538810880 |
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13.18916 |