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Appl Environ Microbiol. 1966 May; 14(3): 331-336
Copyright © 1966 American Society for Microbiology. All Rights Reserved.

Pigmented Bacteriostatic Substances and Amino Acids Produced by Phlebopus sulphureus and Phlebopus lignicola¹

Plant Research Institute, Research Branch, Canada Department of Agriculture, Ottawa, Canada

ABSTRACT

The pigmented bacteriostatic substances and ninhydrin-reactive compounds produced in culture by sporophores, stipes, and residual medium of Phlebopus sulphureus and P. lignicola were studied chromatographically. Acetone extracts of both species demonstrated bacteriostatic activity against Bacillus subtilis and Escherichia coli, the maximal inhibition zone being 13 mm. The chloroform extract was inactive. Six compounds, mainly yellow, extracted in ethyl alcohol and separated by chromatography, were common to the sporophore of P. sulphureus and the stipes of P. lignicola. Eight amino acids, mainly sulfur-containing, were identified chiefly from the mature sporophore of P. sulphureus.

¹ Contribution No. 476, Plant Research Institute, Canada Department of Agriculture, Central Experimental Farm, Ottawa, Canada.