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Characterization of polar lipids of oral isolates of Candida, Pichia and Saccharomyces by Fast Atom Bombardment Mass Spectrometry (FAB MS).

作者信息

Mahmoudabadi A Z, Boote V, Drucker D B

机构信息

Oral Microbiology Laboratory, School of Biological Sciences, University of Manchester, Manchester M15 6FH, UK.

出版信息

J Appl Microbiol. 2001 Apr;90(4):668-75. doi: 10.1046/j.1365-2672.2001.01298.x.

DOI:10.1046/j.1365-2672.2001.01298.x
PMID:11309082
Abstract

AIMS

To characterize fatty acid and phospholipid analogue profiles of oral yeasts.

METHODS AND RESULTS

Twenty-seven strains of oral yeasts were cultured on SDA and lipids of freeze-dried cells were extracted and analysed by FAB MS. The most abundant carboxylate anion was m/z 281 (C18 : 1). The most intense phospholipid analogue ions were of PE, PG, PA and PI. Pichia etchellsii contained molecular species of PG and PE, whereas Saccharomyces cerevisiae had PA, PG and PE analogues. Mass spectra revealed that S. cerevisiae and Candida glabrata were distinct from one another and from the other species tested.

CONCLUSION

Oral yeasts largely differ with respect to their polar lipids. It is concluded that oral yeast species have distinctive fatty acid and phospholipid analogue anion profiles.

SIGNIFICANCE AND IMPACT OF THE STUDY

FAB MS provided novel chemotaxonomic information.

摘要

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