[Effect of stress on the composition of yeast lipids]

M V Zalashko¹, G A Salokhina, I F Koroleva

¹Institute of Microbiology, Academy of Sciences of Belarus, Minsk, Belarus.

|April 7, 2000

Abstract:

Pigmented (Rhodotorula glutinis) and nonpigmented (Lipomyces starkeyi) yeasts were studied. Exogenous stressors (UV irradiation and methylene blue) were shown to change the composition of yeast lipids (especially the ratio of unsaturated fatty acids) and to increase the content of lipid peroxidation products formed (particularly in nonpigmented yeasts). In carotene-synthesizing yeasts, these stressors decreased the amount of carotenoids produced and did not affect the ratio between carotenoid pigments (beta-carotene, torulene, and torularhodin).

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Abstract:

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