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Abstract

Antimicrobial studies on extracts of four species of Stachys

Author(s): M Saeedi1, K Morteza-Semnani2, MR Mahdavi3, F Rahimi2
1Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, POBox 48175-861, Sari, Iran 2Department of Medicinal Chemistry, Faculty of Pharmacy, Mazandaran University of Medical Sciences, POBox 48175-86, Sari, Iran 3Department of Laboratory Sciences, Faculty of Paraclinical Sciences, Mazandaran University of Medical Sciences, POBox 48175-861, Sari, Iran

Correspondence Address:
K Morteza-Semnani Department of Medicinal Chemistry, Faculty of Pharmacy, Mazandaran University of Medical Sciences, POBox 48175-86, Sari Iran E-mail: [email protected]


The antimicrobial activity of the methanol extracts of the dried flowering aerial parts of Stachys byzantina , S. inflata , S. lavandulifolia and S. laxa (Labiatae) were studied using the disc diffusion method and determination of minimum inhibitory concentration (MIC) values against Staphylococcus aureus , Streptococcus sanguis , Escherichia coli , Pseudomonas aeroginosa , Klebsiella pneumoniae , Aspergilus niger and Candida albicans . The extracts of plants exhibited concentration-dependent antibacterial activity against the bacteria tested. The extracts were more active against Gram-positive microorganisms. The extracts, however, did not show any antifungal activity.

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