KSBB Journal

  • 제13권1호
  • /
  • Pages.65-70
  • /
  • 1998
  • /
  • 1225-7117(pISSN)
  • /
  • 2288-8268(eISSN)
한국생물공학회 (The Korean Society for Biotechnology and Bioengineering)
권호 표지

Rhodotorula glutinis K-501에 의해 생산된 세포외지질의 생체계면활성제로서 물리화학적 특성

Physiochemical Properties of Extracellular Lipid Produced by Rhodotorula glutinis K-501 as a Biosurfactant

  • 박평규 (서울시립대학교 공과대학 화학공학과) ;
  • 채희정 (대상(주) 중앙연구소) ;
  • 김의용 (서울시립대학교 공과대학 화학공학과)
  • 발행 : 1998.02.01
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초록

지질 생산 효모인 Rhodotorula glutinis K -501이 생산하는 세포외지질(extracellular lipid)의 물리화학적 성질을 조사하여 생체 계면활성제로서의 응용 가능성을 검토하였다. 분석실험 결과 생산된 세포외지질은 당지질계 물질임을 알 수 있었다. 세포외지질의 임계미셀농도와 표면장력은 각각 89mg/L와 31dyne/cm로서 계면활성제로서 매우 우수한 표면활성을 가지고 있었으며 넓은 범위의 pH에서 표면장력의 값은 일정하였다. 상용 계면활성제인 Tween 80과 Triton X-100에 비하여 세포외지질은 각각2-3배 높은 유화도와 1.3배 높은 분산력을 가지고 있었다.

The physiochemical properties of extracellular lipid produced by an oleaginous yeast, Rhodotorula glutinis K-501 were examined. From the analytical experiments, it was suggested that the extracellular lipid produced is glycolipidic compound. Critical micelle concentration and minimum surface tension of the extracellular lipid in aqueous solution were 89mg/L and 31dyne/cm, respectively. Surface tension was also constant throughout wide range of pH. The emulsifying abilities and dispersing power of the extracellular lipid were much greater than those of commercial surfactants such as Tween 80 and Triton X-100 by factors of 2-3 and 1.3, respectively.

키워드

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