FIG. 1.
GC analysis of ethyl acetate-extracted metabolites from C. drakei. RGM was supplemented with the following substrates (times indicate when samples were removed for analysis): tryptophan, 72 h (A); tryptophan, 24 h (B); or tryptophan plus glucose, 72 h (C). Peaks: 1, skatole; 2, IAA; 3, palmitic acid; and 4, stearic acid. (These fatty acids were present in the culture medium.)