Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Isolation of Bacteriocin-Producing Lactococcus sp.HY 449 and Its Antimicrobial Characteristics

Bacteriocin을 생산하는 Lactococcus sp. HY 449의 분리와 항균 특성

  • 김상교 (한국야쿠르트연구소) ;
  • 이상준 (한국야쿠르트연구소) ;
  • 백영진 (한국야쿠르트연구소) ;
  • 박연희 (아주대학교 공과대학 생물공학과)
  • Published : 1994.06.01
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Abstract

A bacteriocin-producing lactic acid bacteria was isolated from contaminated milk products, which was identified by using the API50 CH kit as Lactococcus lactis subsp. lactis with reliability of 98%. Fatty and analysia of the cell membrane showed that this strain contained same fatty acids profiles as type strain, Lactococcus lactis subsp. lactis ATCC 19435. The bacteriocin of Lactococcus sp. HY 449 showed relatively wide range of inhibition spectrum against gram positive and some gram negative bacteria such as Escherichia coli and maintained the inhibitory activity between pH2.0 and pH9.0 The thermostability of this bacteriocin was higher in acidic solution than in distilled water and was stable at 60$\circ $C for 1 hour.

Keywords

References

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