[The effect of ethanol on the fatty acid content of Saccharomyces cerevisiae and Schwanniomyces occidentalis cells].
The influence of ethanol on fatty acid content in the cells of the Crabtree-positive yeast Saccharomyces cerevisiae and Crabtree-negative Schwanniomyces occidentalis has been studied. It was shown, that S. cerevisiae grown in the medium with 2% glucose was characterized by the lower level of fatty acids in comparison with Schw. occidentalis, while in the medium with 1.5% ethanol no significant difference was found between the contents of fatty acids in the cells of the yeasts investigated. The level of fatty acids in S. cerevisiae is reduced, but that in Schw. occidentalis is enhanced when ethanol was added to the medium containing 2% glucose. The growing of both yeast species in the medium with 0.1% glucose and ethanol leads to the increase of the amount of esterified fatty acids. The level of nonesterified fatty acids increased in Schw. occidentalis and decreased under the same conditions in S. cerevisiae. However, the content of nonesterified fatty acid in S. cerevisiae grown in the medium with 0.1% glucose and 1.5% ethanol was 6.2 times higher as compared with those growing in the medium containing 2% glucose and 1.5% ethanol.
Lviv State University, Biological Faculty, Ukraine.
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D003470:Culture Media; D000431:Ethanol / Q000494:pharmacology*; D005227:Fatty Acids / Q000032:analysis / Q000378:metabolism*; D005947:Glucose / Q000494:pharmacology; D006019:Glycolysis / Q000187:drug effects; D010100:Oxygen / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism; D004718:Saccharomycetales / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism
D003470:Culture Media; D005227:Fatty Acids; D000431:Ethanol; D005947:Glucose; D010100:Oxygen