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Asian Journal of Plant Sciences
Year: 2004  |  Volume: 3  |  Issue: 1  |  Page No.: 82 - 86

Evaluation of Antibacterial Properties of Iranian Medicinal-Plants against Micrococcus luteus, Serratia marcescens, Klebsiella pneumoniae and Bordetella bronchoseptica

G.H. Shahidi Bonjar    

Abstract: From 195 plant samples in 76 families used by Iranian Native People for curing infectious maladies, methanolic extracts of 64 samples in 37 families showed antibacterial activity at least against one bacterial species of Bordetella bronchoseptica, Micrococcus luteus, Klebsiella pneumoniae and Serratia marcescens. High activity belonged to Terminalia chebula, Myrtus communis, Dianthus coryophyllus, Rhus coriaria, Lawsonia inermis and Alpinia officinarum against B. bronchiseptica; T. chebula, M. communis, D. coryophyllus, Glycyrrhiza glabra, Ranunculus asitaticus, R. coriaria, Rheum ribes, Chrozophora verbasafalia, Ephedra intermedia, Cinnamomum zeylanicum and Citrullus colcocynthis against M. luteus; R. ribes, R. coriaria and G. glabra against K. pneumoniae. No plant showed high or medium activity against Serratia marcescens. Umbelliferae with 7, Labiatae with 6 and Compositae with 4, had most number of active samples per plant family. Lowest MIC belonged to T. chebula (ripen seeds) and M. communis (leaves) as 0.93 mg ml-1, against B. bronchiseptica and to T. chebula (unripe seeds) as 0.46 mg ml-1 against M. luteus and to R. ribes and R. coriaria as 1.87 mg ml-1 against K. pneumoniae. Most susceptible bacterium was B. bronchiseptica and most resistant bacterium was S. marcescens. All of the active extracts were well stable at room temperature up to 18 months and did not show any reduction of activity against the sensitive bacterial isolates.

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