658-662
The efficacy of Carica papaya leaf extract on some bacterial and a fungal strain by well diffusion method
Authors: C. Baskaran, V. Ratha bai, S.Velu, Kubendiran Kumaran
Number of views: 278
Objective: To investigate the antimicrobial activity and phytochemical screening Ethanol,
methanol, Ethyl acetate, acetone, chloroform, Petroleum ether, hexane, hot water, and extracts of
Carica papaya. Methods: The aim of the present study was to evaluate the qualitative analysis
of phytochemicals and antimicrobial activity of various solvent extracts of Carica papaya.
The antimicrobial activities of different solvent extracts of Carica papaya were tested against
the Gram-positive and Gram-negative bacterial strains and fungus by observing the zone of
inhibition. The Gram-positive bacteria used in the test were Staphylococcus aureus, Bacillus
cereus and Micrococcus luteus, and the Gram-negative bacteria were Escherichia coli, and
Klebsiella pneumoniae, fungus like Aspergillus niger, Aspergillus flavus, Candida albicans,
Candida tropicalis, Cryptococcus neoformans, and Candida kefyr. Results: It was observed that
ethanol, methanol, ethyl acetate, aceton, chloroform, petroleum ether, hexane and aquas extracts
showed activity against bacteria and fungus. The chloroform extract of Carica papaya showed
more activity against Micrococcus luteus, zone of diameter 15.17±0.29mm and acetone extract of
Carica papaya showed more activity against Candida albicans, zone of diameter 11.23±0.25mm
compared to other solvent extracts. Conclusions: In this study chloroform extract in bacteria and
acetone extract in fungus showed a varying degree of inhibition to the growth of tested organism,
than Ethanol, methanol, Ethyl acetate, Petroleum ether, hexane and hot water extracts. The results
confirmed the presence of antibacterial and antifungal activity of Carica papaya extract against
various hum