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• W3119126610 abstract "AbstractTwelve mono-unsaturated fatty acids with deuterium labels were synthesised with chain lengthsranging from C14 to C20, having different double bond positions (5, 6, 7, 9 and 11). These fatty acidswere fed to ants of the species Myrmica sabuleti. The hydrocarbon profiles of the ants were analysedby gas chromatography coupled to mass spectrometry (GC-MS) to study the incorporation of thesefatty acids in cuticular hydrocarbons. When octadec-11-enoic acid (cis-vaccenic acid) is fed, thehydrocarbon profile of the ant includes alkenes derived from the fatty acid, which are not usuallyobserved in the hydrocarbon profile of this species. These alkenes include Z7-tricosene, Z7-pentacosene and Z7-heptacosene. The double bond position counting from the aliphatic chain (ω-position) of the fatty acid thus remains unchanged when the chain is elongated. When the experimentwas repeated with a new set of ants, less significant incorporation effects were observed. Likewise,feeding of the other fatty acids gave only subtle changes in the hydrocarbon profile. Although subtle,there seems to be trend in increased incorporation of the ω-9 and ω-11 fatty acids, which correspondto alkenes found in normally in the hydrocarbon profile. Also, there seems to be a subtle increase inthe uptake in ω-7 fatty, which results in the formation of alkenes not usually observed in thehydrocarbon profile, as in the first experiment. The first octadec-11-enoic acid experiment shows thatunder specific conditions the hydrocarbon profile can be severely altered by feeding octadec-11-enoicacid.SamenvattingMiddels een zesstapssynthese zijn twaalf enkelvoudig onverzadigde vetzuren verkregen metdeuterium labels. De ketenlengte van deze vetzuren ligt tussen C14 en C20, met de dubbele bindingop verschillende posities (5, 6, 7, 9 en 11). Deze vetzuren zijn aan mieren van het soort Myrmicasabuleti gevoerd. Het koolwaterstofprofiel is middels gaschromatografie gekoppeld aanmassaspectrometrie (GC-MS) onderzocht op de opname van de bovengenoemde vetzuren. Wanneeroctadec-11-eenzuur (cis-vacceenzuur) wordt opgenomen en gebruikt in de biosynthese van cuticulairekoolwaterstoffen worden Z7 alkenen gevormd; Z7-tricoseen, Z7-pentacoseen en Z7-heptacoseen. Depositie van de dubbele binding vanaf de alifatische keten (ω-positie) blijft ongewijzigd, duidend opeen kop-staart ketenverlenging van het vetzuur zonder verdere veranderingen. Bij herhaling van hetexperiment werden minder sterke veranderingen waargenomen. Ook effecten van de andere vetzurenzijn subtiel, hoewel er wel een trend zichtbaar was in de verhoogde opname van ω-9 en ω-11 vetzuren,deze vetzuren zijn mogelijke startmaterialen voor de alkenen die van nature in dekoolwaterstofprofielen aanwezig zijn. Ook ω-7 vetzuren lijken opgenomen te worden, terwijl Z7-alkenen normaal niet voorkomen in het profiel van M. sabuleti. Vanuit de resultaten van het eersteexperiment kan opgemaakt worden dat M. sabuleti door octadec-11-eenzuur te voeren onderbepaalde omstandigheden wel Z7-alkenen kan vormen, waardoor het koolwaterstofprofiel sterkveranderd wordt." @default.
• W3119126610 created "2021-01-18" @default.
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• W3119126610 date "2016-01-01" @default.
• W3119126610 modified "2023-09-26" @default.
• W3119126610 title "Effects of different mono-unsaturated fatty acids on hydrocarbon biosynthesis in ants" @default.
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