A study was carried out with an objective of isolating lactic acid bacteria associated with fresh water fish viscera and characterizing them in order to explore the possibilities of utilizing bacteriocins. Fish processing generates considerable quantities of waste in the form of head, viscera, scale, skin, fins, frame bones etc. These inedible byproducts harbor various types of microorganisms both harmful as well as beneficial types. The study included enumeration of LAB count in fresh and marine water fish wastes. The isolated LAB was identified by different biochemical tests and sugar fermentation tests. LAB was also tested for their antimicrobial action against selected human pathogens, fungus and aflatoxins. The bacteriocin of various isolates inhibits the growth pathogenic organisms.


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