title: [Branched alkanes and other apolar compounds produced by the cyanobacterium Microcoleus vaginatus from the Negev desert].
abstract: Gas chromatography-mass spectrometry on serially coupled capillary columns with different polarity of stationary phases showed that the soil cyanobacterium Microcoleus vaginatus from the Negev desert produces an unusual mixture of 4 normal and more than 60 branched alkanes, as well as a number of fatty acids, cyclic and unsaturated hydrocarbons, aldehydes, alcohols, and ketones. The dominant compounds were heptadecane (12%), 7-methylheptadecane (7.8%), hexadecanoic acid (6.5%), (Z)-9-hexadecenoic acid (5.6%), 4-ethyl-2,2,6,6-tetramethylheptane (2.8%), (Z)-9-octadecenoic acid (2.8%), and 4-methyl-5-propylnonane (2.7%).
authors.affiliation: Department of Pharmaceutical Chemistry and Natural Products, School of Pharmacy, P.O. Box 12065, The Hebrew University of Jerusalem, Jerusalem, 91120 Israel. dvalery@cc.huji.ac.il
authors.forename: V M
authors.initials: VM
authors.lastname: Dembitskiĭ
authors.forename: I
authors.initials: I
authors.lastname: Dor
authors.forename: I
authors.initials: I
authors.lastname: Shkrob
authors.forename: M
authors.initials: M
authors.lastname: Aki
mesh_terms: D000438:Alcohols / Q000737:chemistry; D000473:Alkanes / Q000737:chemistry*; D000458:Cyanobacteria / Q000737:chemistry*; D005227:Fatty Acids / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D007557:Israel; D007659:Ketones / Q000737:chemistry
chemical_list: D000438:Alcohols; D000473:Alkanes; D005227:Fatty Acids; D007659:Ketones