title: Gas chromatography-mass spectrometry analysis of fatty acid profiles of Antarctic and non-Antarctic yeasts.
abstract: The fatty acid profiles of Antarctic (n = 7) and non-Antarctic yeasts (n = 7) grown at different temperatures were analysed by gas chromatography-mass spectrometry. The Antarctic yeasts were enriched in oleic 18:1 (20-60 %), linoleic 18:2 (20-50 %) and linolenic 18:3 (5-40 %) acids with lesser amounts of palmitic 16:0 (<15 %) and palmitoleic 16:1 (<10 %) acids. The non-Antarctic yeasts (n = 4) were enriched in 18:1 (20-55 %, with R. mucilaginosa at 75-80 %) and 18:2 (10-40 %) with lesser amounts of 16:0 (<20 %), 16:1 (<20 %) and stearic 18:0 (<10 %) acids. By contrast, Saccharomyces cerevisiae strains (n = 3) were enriched in 16:1 (30-50 %) and 18:1 (20-40 %) with lesser amounts of 16:0 (10-25 %) and 18:0 (5-10 %) acids. Principal component analysis grouped the yeasts into three clusters, one belonging to the S. cerevisiae strains (enriched in 16:0, 16:1 and 18:1), one to the other non-Antarctic yeasts (enriched in 18:1 and 18:2) and the third to the Antarctic yeasts (enriched in 18:2 and 18:3).
authors.affiliation: School of Science and Technology, University of New England, Armidale, NSW, 2351, Australia.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Bhuiyan
authors.forename: David
authors.initials: D
authors.lastname: Tucker
authors.forename: Kenneth
authors.initials: K
authors.lastname: Watson
mesh_terms: D000864:Antarctic Regions; D016000:Cluster Analysis; D003600:Cytosol / Q000737:chemistry; D004783:Environmental Microbiology; D005227:Fatty Acids / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D013696:Temperature; D015003:Yeasts / Q000737:chemistry* / Q000145:classification
chemical_list: D005227:Fatty Acids