Further study of the lipids from Pithomyces chartarum (Sporidesmium bakeri) and related fungi

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Abstract
The fatty acid composition (molar percentages) of the lipids from Stemphylium dendriticum, family Dematiaceae, consisted of 52% of linoleic, 19% of palmitic and 17% of oleic acid as major components, thereby resembling that of the fungal mats and spores of Pithomyces chartarum, another member of the same family. In contrast, the fatty-acid composition of Cylindro-carpon radicicola, from the related Tuberculariaceae, resembled more that of other fungi hitherto examined in containing 29% of linoleic, 24% of palmitic, 27% of oleic and 10% of linolenic acid. The amounts of total sterols in the ''glyceride'' fraction of P. chartarum and C. radicicola were found to be from 8. 3 to 9. 6% and of free sterols from 5.4 to 8. 4%, whereas the corresponding amounts of S. dendriticum were 15. 6 and 14. 3%. Glycerol has been isolated from the ''glycerides'' of P. chartarum, their saponifiable fraction consisting predominantly of triglycerides.