Journal - Association of Official Analytical Chemists 1976-May
Comparison of antibiotic-amended potato dextrose agar and acidified potato dextrose agar as growth substrates for fungi.
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Fifteen fungal species, all isolated from food, were compared for their growth abilities on potato dextrose agar acidified to pH 3.5, and on nonacidified potato dextrose agar amended with 40 ppm chlortetracycline hydrochloride. Comparisons were made at 16, 21, 26, 32, and 37 degrees C. Of the 15 species, only Penicillium expansum exhibited better growth on the acidified medium than on the nonacidified antibiotic medium, while 9 species grew better on the nonacidified antibiotic medium. Five species grew equally well on either medium.