Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Effect of pH and Nisin on Heat Resistance of Listeria monocytogenes Scott A

Listeria monocytogenes의 열저항성에 미치는 pH와 Nisin의 효과

  • 이신호 (효성여자대학교 식품가공학과) ;
  • 조현순 (효성여자대학교 식품가공학과)
  • Published : 1993.06.01
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Abstract

The effect of pH (7, 5 and 4) and nisin (100 and 200IU/ml) on heat resistance of Listeria monocytogenes Scott A were determined using citrate-phosphate buffer system. Heat resistance of vegetative and starved cell was decreased as pH value was lower at 65 and 72C. Starved L. monocytogenes was more resistant than vegetative cell at both temperature. Heat resistance of vegetative and starved cell was decreased significantly with treatment of nisin. The effect of nisin was increased significantly at low pH(5, 4). Adherent microcolony was more resistant to heat and nisin than planktonic cell. Contamination of L. monocytogenes may be prevent by using nisin in food and food processing environments.

Keywords

References

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