Pediococcus sp. ISK-1 isolated in our laboratory from well-aged Nukadoko, produces a bacteriocin which has a unique antimicrobial spectrum among pediocins. The bacteriocin was stable at acidic pH, and more than 60% of the antimicrobial activity still remained even after being autoclaved at 121°C for 20min in the pH range of 3 to 8. This is the first report dealing with a bacteriocin produced by lactic acid bacteria isolated from Nukadoko.
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