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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018029710
pages 131-141

Evaluation of the Antibacterial Activity of 75 Mushrooms Collected in the Vicinity of Oxford, Ohio (USA)

Faizule Hassan
Department of Chemistry and Biochemistry, Miami University, Oxford, OH
Shuisong Ni
Department of Chemistry and Biochemistry, Miami University, Oxford, OH
Taylor L. Becker
Department of Chemistry and Biochemistry, Miami University, Oxford, OH
Christine M. Kinstedt
Department of Chemistry and Biochemistry, Miami University, Oxford, OH
Jana L. Abdul-Samad
Department of Chemistry and Biochemistry, Miami University, Oxford, OH
Luis A. Actis
Department of Microbiology, Miami University, Oxford, OH
Michael A. Kennedy
Department of Chemistry and Biochemistry, Miami University, Oxford, OH

ABSTRACT

Antibiotic-resistant bacteria are an increasing and serious health concern worldwide, and multidrug-resistant pathogens are increasingly emerging among patients across the United States. Researchers are exploring sources of traditional medicines, including mushrooms, to find new antibiotic compounds. In this study, the antibiotic activities of 75 mushrooms collected in the area surrounding Oxford, Ohio (USA), were assayed for antibiotic activity against 6 bacterial strains (Pseudomonas aeruginosa reference strains PAO1 and PA14, P. fluorescens, Bacillus subtilis, Staphylococcus epidermidis, and Micrococcus luteus). Mushroom samples were identified by using DNA ribotyping. We used methanol and water extracts of mushrooms in agar diffusion assays to screen for antibiotic activity toward each bacterial strain. A total of 25 mushroom species had antibacterial activity against at least 1 bacterium. Water extracts of Polyporus squamosus, Ganoderma applanatum, Lentinellus subaustralis, Laetiporus sulphureus, G. lucidum, and Trametes versicolor exhibited strong antibiotic activity against all bacterial strains tested. Water and methanol extracts from 25 mushroom species had significant activity against most of the bacteria tested. A minimum inhibitory concentration (MIC) against S. epidermidis was determined for all samples that exhibited antibiotic activity in the disk assay. The G. lucidum and L. sulphureus extracts displayed the strongest inhibition, with an MIC of 0.1 mg/mL.


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