Pharmacognosy

Journal of Pharmacognosy and Phytochemistry

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Journal of Pharmacognosy and Phytochemistry

Vol. 3, Issue 1 (2014)

Antimicrobial and Antioxidant Activity of Some Indigenous Plants of Nepal

Author(s): Bimala Subba and Prakash Basnet
Abstract: Seven indigenous medicinal plants, Mallotus philippensis, Pogostemon cablin, Colebrookea oppositifolia, Mussaenda macrophylla, Celosia argentea, Pilea symmeria and Thysanolaena maxima, have been investigated for their antimicrobial activity and antioxidant activity. The ethanol extract of these medicinal plants were subjected to evaluate their antibacterial properties and their antioxidant potential. The antibacterial screening against four bacteria, Staphylococcus aureus, Klebsiella pneumoniae, Proteus vulgaris and Escherichia coli), was done by disc diffusion method and Zone of Inhibition (ZOI) was observed. The ZOI obtained ranges from 7 to 16 mm. The Antioxidant activity of the extract was tested using scavenging activity of DPPH (1, 1-Diphenyl-2- Picrylhydrazyl) radical method. Ascorbic acid was taken as standard. IC50 of four extracts were obtained < 100 µg/ml whereas three had > 100 µg/ml. The overall result shows that almost all the plant extracts have interesting antibacterial activity and among seven, four had remarkable radical scavenging potential to be used as an antioxidant.
 Plot of antibacterial activity of the ethanol extract of medicinal plants against various bacteria.
Fig.: Plot of antibacterial activity of the ethanol extract of medicinal plants against various bacteria.
Pages: 62-67  |  1542 Views  24 Downloads
How to cite this article:
Bimala Subba, Prakash Basnet. Antimicrobial and Antioxidant Activity of Some Indigenous Plants of Nepal. J Pharmacogn Phytochem 2014;3(1):62-67.
Journal of Pharmacognosy and Phytochemistry