Abstract

INHIBITORY EFFECT OF METABOLITES FROM PROBIOTIC Lactobacillus plantarum ON GROWTH OF FOOD BORNE PATHOGENS

P.Prema*, A.R.Arthi and P.Viji

ABSTRACT

Lactic acid bacteria commonly used as a natural food preservative toimprove the food safety and stability. These organisms produce certainantimicrobial substance such as bacteriocins. The present study wasfocused on isolation and characterization of bacteriocin producingLactobacillus plantarum from a grass silage samples. The isolates wereidentified, based on characteristics of the strains of Lactobacillusplantarum as present in Bergey’s manual of Systematic bacteriology,the metabolite bacteriocin was extracted from the isolated strain andthe antagonistic activity was evaluated against food borne pathogens.The bacteriocin producing strain, L.plantarum exhibited the highestzone of inhibition (16mm) against Staphylococcus aureus. This study revealed that thepossibility of using bacteriocin as food biopreservative to control food spoilage organisms.

Keywords: Bacteriocin, L.plantarum, food borne pathogens and antagonistic activity.