Inhibitory activity of Lactobiocin on the skin inflammation and acnes

Lactobiocin의 피부 염증 및 여드름 저해효과에 관한 연구

  • 김광수 (나드리화장품(주) 기술연구소) ;
  • 오세종 ((주)한국야쿠르트 중앙연구소) ;
  • 김기환 (나드리화장품(주) 기술연구소) ;
  • 홍진천 (나드리화장품(주)기술연구소) ;
  • 이승화 (나드리화장품(주)기술연구소)
  • Published : 2002.04.01

Abstract

The purpose of this study was to evaluate bacteriocin activity against human flora. Lactobiocin, a bacteriocin produced by Lactococcus sp. HY 449, inhibited the growth of Starphylococcus epidermidis, Starphylococcus aureus, Streptoccoccus pyogenes and Propionibacterium acnes. When crude bacteriocin was added to indicator cells during logarithmic growth, the optical density(O.D 650nm) of cells without bacteriocin increase after 5h of incubation. Whereas in the presence of bacteriocin, the O.D of cell suspensions decreased. The similar patterns were observed for absorbance readings at 280 nm and 260 nm. The release of cellular components when cell were treated with Lactobiocin suggests some degree of membrane damage or cell lysis. Scanning electron microscopy of cells following treatments with Lactobiocin in PBS buffer revealed disruptures of cell morphology. These results indicate that bacteriocin appears to cause cell lysis of tested strains. In cytotoxicity on human fibroblast, LD$\_$50/ of Lactobiocin was ca. 50 mg/ml and no change was observed cell proliferation at the same concentration. Any irritation and allergic reaction did not observed when evaluated by human patch test for Lactobiocin.

Keywords

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