Investigation of antimicrobial activity of Pelargonium radula (Cav.) L'Hérit.

Antimicrobial activities of two ethanolic extracts, made from fresh and dried leaves of Pelargonium radula (Cav.) L'Hérit, were tested against fourteen species of bacteria and fifteen species of fungi. The well-diffusion method indicated the strongest activity against Pseudomonas aeruginosa. The broth dilution method revealed that the most sensitive microorganisms were Bacillus pumilus, Bacillus subtilis, Escherichia coli and Serratia marcescens. Extract prepared from fresh leaves showed significantly higher antimicrobial activity than the extract prepared from dried leaves.