Differentiation of Peptococcus and Peptostreptococcus by gas-liquid chromatography of cellular fatty acids and metabolic products

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Abstract
GLC profiles of cellular fatty acids and metabolic products were useful in identifying strains of Peptococcus (P.) saccharolyticus, P. asaccharolyticus, Peptostreptococcus (Ps.) anaerobius, Ps. micros and Streptococcus intermedius. The GLC results supported the recent taxonomic decision to transfer aerotolerant Ps. spp. to the genus Streptococcus. Because inconsistencies in the results prevented differentiating P. prevotii, P. magnus and P. variabilis by GLC, additional strains will have to be examined. These GLC techniques are amenable to routine use; for interlaboratory results to be meaningful, the classification and nomenclature of the anaerobic gram-positive cocci should be standardized.