alexa Abstract | Screening of some traditionally used medicinal plants for potential antibacterial activity

Indian Journal of Pharmaceutical Sciences
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In the present work an attempt has been made to carry out screening for the preliminary antibacterial activity of different plants used in Indian folk medicine. The aim of the study was to select an active plant extract which may be useful in developing new lead compounds to combat deadly diseases. Twelve plants were selected for preliminary screening for their antibacterial potentiality, viz., Abutilon indicum L., Acorous calamus L., Ammania baccifera L., Argyrea nervosa Burm. F., Bauhinia variegata L., Crataeva religiosa Forst., Hedychium spicatum L., Holarrhena antidysenterica L., Piper nigrum L., Plumbago zeylanica L., Psoralea corylifolia L., Saussurea lappa Costus. The antibacterial activity was done by both agar disc diffusion method and agar well diffusion method against five bacterial strains, viz., Bacillus cereus, Staphylococcus aureus, Klebsiella pneumoniae, Escherichia coli, Pseudomonas pseudoalcaligenes . The plant material was extracted with distilled water (aqueous) and methanol. The preliminary screening experiment revealed that methanol extracts were more potent than the aqueous extracts. The plant extracts were more active against gram-positive bacteria than gram-negative bacteria. The most susceptible bacteria were K. pneumoniae and the most resistant bacteria were E. coli . Bauhinia variegata L. exhibited remarkable antibacterial activity.

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Author(s): Jigna Parekh Nehal Karathia Sumitra Chanda

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