National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Bacteriocins are low molecular proteinaceous antimicrobial compounds secreted by bacteria to inhibit the growth of similar or closely related bacterial strains. In the present study, an attempt was made to isolate bacteria from various sources and screen for bacteriocinic activity. A total of 609 bacteria were isolated from different sources out of which 303 gram positive bacteria were screened for antimicrobial activity by primary streak method. Among these, 51 positive isolates were studied for colony and cell morphology which exhibited good antimicrobial activity. Thirty two isolates were streamlined for determination of bacteriocinic activity by agar well diffusion assay against four pathogens. Further three isolates IB23, AH4 and BrMk4 revealed significantly better antimicrobial activity against S. aureus, P. aeruginosa and E. coli. very scarce antimicrobial activity was observed against L. monocytogenes. Based on the biochemical tests, the organism was identified to be Staphylococcus aureus, Bacillus cereus and Lactobaccilus sp. respectively.
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