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http://dx.doi.org/10.3746/jkfn.2007.36.8.1077

Characteristics of Pichia anomala K15 Producing Killer Toxin Isolated from Traditional Nuruk  

Jung, Hee-Kyoung (Bio Industry Center, Daegu New Technology Agency)
Park, Chi-Duck (Bio Industry Center, Daegu New Technology Agency)
Lee, Gee-Dong (Bio Industry Center, Daegu New Technology Agency)
Park, Seung-Chun (College of Veterinary Medicine, Kyungpook National University)
Park, Hwan-Hee (Hahyangjuga Co.)
Hong, Joo-Heon (Bio Industry Center, Daegu New Technology Agency)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.36, no.8, 2007 , pp. 1077-1082 More about this Journal
Abstract
In this study, killer yeasts were isolated from traditional Nuruk to improve storage and suppress contaminant in food industry. Among killer yeasts, yeast K15 showed strong killer toxin activity and inhibited growth of Salmonella Typhimurium and Vibrio parahaemolyticus. Killer yeast K15 was identified with Pichia anomala by the Microlog TM 4.0 identification system and homology of the ITS sequence. Killer toxin generated from P. anomala K15 was inactivated by pronase E and suggested to be a protein. Therefore killer toxin of P. anomala K15 was thought to be safe in human such as bacteriocin. P. anomala K15 was sufficient for growth in 50% glucose and could be used to prevent contaminant in initial stages of alcohol beverage fermentation.
Keywords
Nuruk; killer toxin; Pichia anomala K15; isolation;
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