Summary: The cellular long-chain fatty acids of seven strains representing four species of the Endomycetaceae were extracted from yeast cells by saponification and analysed as their methyl esters by GLC. Each of these species produced a distinctive mean fatty acid ‘fingerprint'. It was possible to distinguish between the four species within 4 h after they were obtained from 48 h cultures as compared with 7 to 10 d for more conventional methods.
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