Influence of the culture medium on the inhibitory activity of Arthrinium strains

Modifications in the antibiotic capacity of Arthrinium strains when they were developed in culture media of various compositions were studied. The culture media used were 2% malt extract agar, Czapek-Dox agar, Sabouraud dextrose agar, oatmeal agar, Yoshimura's medium, mixed medium of salts, modified phytone agar, malt extract-yeast extract agar, potato dextrose agar, and Wickerham's medium. The inhibition values were compared with those obtained when the strains were developed in Wickerham's medium. The media which enhanced the production of inhibitory substances were potato dextrose agar and 2% malt extract agar.