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Appl Environ Microbiol. 1974 March; 27(3): 570-574
Copyright © 1974 American Society for Microbiology. All Rights Reserved.

Short-Chain Acids of Pseudomonas Species Encountered in Clinical Specimens

Center for Disease Control, Atlanta, Georgia 30333

ABSTRACT

The short-chain acids of 36 strains of Pseudomonas grown on Trypticase soy agar were determined by gas-liquid chromatography. Distinct acid profiles were observed for each of the eight species tested. Propionic, isobutyric, and isovaleric acids were the principal acids detected in media extracts of P. maltophilia, P. cepacia, P. pseudoalcaligenes, P. diminuta, and P. vesiculare. The presence and relative amounts of the isobutyric and isovaleric acids clearly distinguished P. maltophilia, P. pseudoalcaligenes, and P. cepacia from other species. P. diminuta could be distinguished from P. vesiculare by the production of glutaric acid; P. testosteroni was the only species tested which produced relatively large amounts of phenylacetic acid.