Inhibition of microbial pathogens using fruit and vegetable peel extracts

Abstract

The aim of the present work is to evaluate the antimicrobial potency of some vegetable and fruit peels. The extraction was done by individual cold percolation method using various solvents with increasing polarity (Hexane, ethyl acetate, acetone, methanol and aqueous). The antimicrobial activity was done by agar well diffusion assay against five Gram positive bacteria, five Gram negative bacteria and four fungi. All extracts demonstrated varied level of antimicrobial activity. The peel extracts showed highest zone of inhibition against Gram negative bacteria as compared to Gram positive bacteria and fungi. Amongst studied peel extracts Citrus limon followed by Manilkara zapota and Carica papaya showed good antimicrobial activity indicating its potency as a promising source of natural antimicrobics. The results confirm the belief that agro waste can be therapeutically used.

• Agro waste
• antimicrobial activity
• agar well diffusion assay
• peels

Acknowledgements

The authors thank Prof. S.P. Singh, Head, Department of Biosciences, Saurashtra University, Rajkot, Gujarat, India for providing excellent research facilities.