1,1-Diphenyl,2-picrylhydrazyl free radical scavenging,bactericidal,fungicidal and leishmanicidal properties of Teucrium stocksianum

Abstract

In the present study, we evaluated the pharmacological and toxicological effects of Teucrium stocksianum. The crude extract of T. stocksianum (Ts.Cr) and its subsequent organic fractions: n-hexane (Ts.Hex), chloroform (Ts.CHCl₃) and ethyl acetate (Ts.EtAc) exhibited 1,1-diphenyl,2-picrylhydrazyl free radical scavenging activity with different potencies. Ts.EtAc was found to be most potent. Ts.Cr, Ts.Hex, Ts.CHCl₃ and Ts.EtAc showed significant bactericidal activity against Escherichia coli, Staphylococcus aureus, Salmonella typhi, Shigella flexneri and Bacillus subtilis at their extent. Ts.Cr, Ts.Hex, Ts.CHCl₃ and Ts.EtAc displayed fungicidal action against Aspergillus niger, Aspergillus flavus, Aspergillus fumigatus and Fusarium solani at various minimum inhibitory concentrations. Ts.Cr and Ts.EtAc exhibited marked inhibition of Leishmania tropica growth, observed after 48 and 96 hrs of treatment. These data indicate that the T. stocksianum methanolic extract and its resultant fractions possess antioxidant, antibacterial, antifungal and antileishmanial activities. Thus, the present research unearths the scientific base for T. stocksianum medicinal application as antioxidant and antimicrobial agents.

Keywords

antioxidant antibacterial antifungal antileishmanial

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