Hygeia journal for drugs and medicines


Antibacterial activity of selected Medicinal plants from South India

Hygeia.J.D.Med2013; 5(1):63-68.  

Dhanalakshmi D, Dhivya R, Manimegalai K.

Department of Zoology, Avinashilingam Institute for Home Science and Higher Education for Women,Coimbatore, TamilNadu, India 6410 43.


Article History: Received: 27 December 2012,  revised: 11 January 2013, accepted:4 February 2013, Available online: 3 April 2013

Plan:  Antibacterial activity of leaves and seed of Pongamia pinnata and Lawsonia innermis have been studied for their antimicrobial activities using agar well diffusion method.

Methodology: The selected bacterial strains, namely Bacillus subtilis, Escherichia coli,Enterobacter aerogenes, Micrococcus luteus and Pseudomonas aeroginosa isolated from PSG Hospital, Coimbatore, Tamilnadu were selected for the study. Maximum zone of inhibition of the active compounds was evaluated by using NCCLS Method.The plant extracts were tested with the standard positive control chloramphenicol.

Outcome: Among the three solvents analysed ethanolic leaf extract of Pongamia pinnata and Lowsonia innermis exhibited a maximum resistance against Bacillus subtilus and possessed a highest inhibitory zone against Pseudomonas aeroginosa and Micrococcus luteus respectively when compared to other bacterial strains.

Keywords: Pongamia pinnata, Lawsonia innermis antibacterial activity, plant extracts, agar well diffusion method.


Dhanalakshmi D, Dhivya R, Manimegalai K. Antibacterial activity of selected Medicinal plants from South India. Hygeia.J.D.Med. 2013; 5(1):63-68.   Available from   http://www.hygeiajournal.com, Article ID- Hygeia.J.D.Med/89/13


For Correspondence: manijeysu@gmail.com
Hygeia.J.D.Med.Vol.5 (1), April 2013
© 2013, Hygeia journal for drugs and medicines,
Allrights reserved.  22293590, 0975
Researcher ID: A- 4042-2013


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