KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Cosmical Analysis and Interfacial Characterization of Biosurfactants formed by Rhodococcus. Sp. strain IGTS8 during the Biodesulfurization Process

미생물 탈황 공정 중 Rhodococcus sp. strain IGTS8에 의하여 생성되는 Biosurfactants의 성분 분석 및 계면특성

  • 박홍우 (한양대학교 공과대학 화학공학과) ;
  • 박기돈 (한양대학교 공과대학 화학공학과) ;
  • 오성근 (한양대학교 공과대학 화학공학과)
  • Published : 2002.06.01
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Abstract

The chemical analysis and surface chemical properties of biosurfactant formed by Rhodococcus sp. strain IGTS8, which is widely used in biodesulfurization process, in hexadecane/water mixture have been studied. For the chemical analysis, TLC technique was employed. The surface tension, CMC, and emulsion stability of biosurfactant solution were also investigated. The major components of biosurfactant formed by Rhodococcus sp. strain IGTS8 were glucose mycolate and trehalose monomycolate. The CMC of aqueous biosurfactant solution was 0.1 ~0.15 g/100 mL of Water at pH 6.0-6.5 and pH 10~10.5. But the demulsification was faster at pH 10 than at pH 6.3.

탈황공정에 많이 이용되는 미생물인 Rhodococcus sp. Strain IGTS8이 hexadecane과 배지 수용액 혼합물에서 생성하는 biosurfactant의 성분분석과 계면물성을 연구하였다. TLC를 이용한 정성적 성분분석 결과 생성되는 biosurfactant는 glucose mycolate와 trehalose monomycolate임을 확인하였고 임계 미셀농도는 pH 6∼6.5와 pH 10∼10.5에서 100 mL의 수용액에 biosurfactant가 0.1∼0.15 g 첨가될 때였으며 유화파괴 속도는 pH가 높을수록 증가하였다.

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References

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