Antibacterial Activity of Extracts of Parmotrema praesorediosum, Parmotrema rampoddense, Parmotrema tinctorum and Parmotrema reticulatum

摘要

The present study was carried out to evaluate the antibacterial potential of acetone and methanol extracts of lichens of Parmotrema praesorediosum, P. rampoddense, P. tinctorum and P. reticulatum. Antibacterial activity was evaluated using broth dilution method. The acetone extracts (except for P. reticulatum) showed good inhibitory activity against Staphylococcus aureus and Bacillus subtilis with MIC values ranging from 125 - 500 μg/mL, whereas, no activity was observed for the methanol extracts. None of the extracts exhibited inhibitory activity against Escherichia coli.