Journal of Pure and Applied MicrobiologyVol. 3 No. 2

Bioload Reducing Potential of Neem

Subramani¹ and Rajendran²

¹Department of Microbiology, Sourashtra College, Madurai, India. ²Department of Botany, Saraswathy Narayanan College, Madurai, India.

Received on 28 March 2009 and accepted on 24 May 2009



Sewage is a guaranteed source of many pathogens which have the potential to initiate an epidemic outbreak. The classical approach of chlorination for disinfection of water bears reported and proven side effects. Neem (Azadirachta indica A. Juss) has been reported to contain potent antibacterial properties and is capable of inhibiting the growth of many harmful bacteria. In the present study, the active principal is isolated from neem and tested for its efficacy to reduce the bacterial bioload in a defined volume of sewage. The rate is compared with that of the pure form and with chlorine. Combined antibacterial efficacy of azadirachtin and chlorine was also analyzed. We conclude that azadirachtin present in neem has potent bactericidal properties against bacterial population in waste water and can be used in conjunction with chlorine for disinfection purpose.

Keywords : Pathogens, Chlorination and Azadirachtin.