Lambert M A, Moss C W
J Clin Microbiol. 1980 Aug;12(2):291-3. doi: 10.1128/jcm.12.2.291-293.1980.
Peptostreptococcus anaerobius was found to metabolize tyrosine to p-hydroxyhydrocinnamic acid [3-(p-hydroxyphenyl)propionic acid]. This acid was detected in spent growth media by gas-liquid chromatography, and its identity was confirmed by mass spectrometry.