Evaluation of the antimicrobial (antibacterial and antifungal) activity of ethanolic extracts of some medical plants.

Abstract

The aim of the study was to evaluate the antimicrobial activity ethanolic extracts of Nigella sativa (N.sativa), Zingiber officinal (Ginger), and Trigonella foenum graecum (Fenugreek), in three concentration (50mg/ml, 100mg/ml, and 200mg/ml).The antimicrobial activities have been evaluated against two gram positive bacteria: Staphylococcus aureus, Streptococcus sp., and two gram negative bacteria: Escherichia coli, Proteus sp. And two pathogenic fungi: Candida albicans, Sacromysis sp.

Ethanolic extract of Ginger showed the maximum antimicrobial against gram positive bacteria and Candida  albicans fungi while Fenugreek extract give the potent effect against gram negative bacteria and Sacromysis fungi. On the other hand N. sativa extract showed the minimum antimicrobial effects. The results indicate the efficacy of the plants as a potent antimicrobial agents.

Key words: Antibacterial, Antifungal, Ethanolic extract, Nigella sativa, Ginger, Fenugreek.