U.S. Department of Agriculture, Metabolism and Radiation Research Laboratory Agricultural Research Service, 58105, Fargo, North Dakota.
J Chem Ecol. 1984 Sep;10(9):1335-47. doi: 10.1007/BF00988115.
The stem weevil,Cylindrocopturus adspersus (LeConte) (Coleoptera: Curculionidae) yields 3% of its body weight as extractable lipids (40 μg/ weevil). The alkane fraction was composed ofn-alkanes (38%) and branched alkanes (62%). The compounds were characterized by gas chromatography-mass spectrometry (GC-MS). The chromatogram contained several single-component peaks (9 of 25). Only seven dimethylalkanes were isolated (17.8%): 9,19- and 9,21-dimethylheptacosane; 9,19- and 9,21-dimethylnonacosane; 9,21- and 11,21-dimethylhentriacontane; and 11,21-dimethyltritriacontane. Important methylalkanes were: 2-methyltetra- and hexacosanes and 10-methylhexa- and octacosanes. Late-eluting gas chromatography peaks were composed of simple alkane mixtures or a single component.
茎象甲，Cylindrocopturus adspersus (LeConte)（鞘翅目：象甲科）的可萃取脂质占其体重的 3%（每只象甲 40 μg）。烷烃部分由正构烷烃（38%）和支链烷烃（62%）组成。通过气相色谱-质谱联用仪（GC-MS）对化合物进行了表征。色谱图包含几个单一组分峰（25 个中有 9 个）。仅分离出七种二甲基烷烃（17.8%）：9,19-和 9,21-二甲基二十七烷；9,19-和 9,21-二甲基二十九烷；9,21-和 11,21-二甲基三十烷；和 11,21-二甲基三十一烷。重要的甲基烷烃有：2-甲基二十四烷和二十六烷以及 10-甲基二十八烷和三十二烷。迟洗脱的气相色谱峰由简单的烷烃混合物或单一成分组成。
