A Study of the Lipid Composition of Microbacterium thermosphactum as a Guide to its Taxonomy

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Abstract
Summary.: The lipid composition of Microbacterium thermosphactum has been investigated. The major phospholipids were phosphatidylglycerol, bis‐phosphatidylglycerol and phosphatidylethanolamine. The glycolipid fraction contained an acylated glucose and trace amounts of a glycosyl diglyceride, tentatively identified as dimannosyl diglyceride. The fatty acid components of the lipids were predominantly C15 and C17 branched chain isomers. The lipid composition of this organism was compared with that of other Corynebacteriaceae and Lactobacillaceae and it is suggested that the present classification should be retained.