The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Effects of Mixed Carbon Sources on the Production of Cellulase by Trichoderma reesei

Trichoderma reesei를 이용한 섬유소 분해 효소의 생산에 있어서 혼합탄소원의 영향

  • Nam, Joo-Heon (Department of Biological Engineering, Inha University) ;
  • Koo, Yoon-Mo (Department of Biological Engineering, Inha University) ;
  • Yun, Hyun-Shik (Department of Biological Engineering, Inha University)
  • 남주헌 (인하대학교 공과대학 생물공학과) ;
  • 구윤모 (인하대학교 공과대학 생물공학과) ;
  • 윤현식 (인하대학교 공과대학 생물공학과)
  • Published : 1998.06.30
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Abstract

The feasibility of enzymatic hydrolysis of cellulosic materials is dependent on the cost of cellulase, which is strongly influenced by the selection of proper carbon source in the cellulase production medium. When solka floc was used as a carbon source for the production of cellulase by Trichoderma reesei Rut C-30, a maximum of 53.2 U/ml of CMCase activity (4.8 U/ml of FPase activity) was obtained with a concentration of 1 % of solka floc. The cellulase activity decreased to 50% in the presence of 0.5% of glucose in the medium. The production of cellulase was considerably enhanced when solka floc and wheat bran were used together as a carbon source. A medium which contained 1 % of solka floc and 3 % of wheat bran yielded highest cellulase activity: CMCase activity of 76 U/ml and FPase activity of 12.5 U/ml.

섬유소를 분해하여 이용하기 위해서는 섬유소 분해효소를 대량으로 생산하는 것이 중요하며 이를 위해서는 적절한 탄소원을 이용하여 섬유소 분해효소의 대량생산을 유도하는 것이 중요하다. 본 실험에서는 Trichoderma reesei Rut C-30을 섬유소 분해효소의 생산 균주로 solka floc을 탄소원으로 사용하여 섬유소 분해효소의 활성을 증가시키기 위한 배지내 최적 농도가 1%이고 포도당이 0.5%이상 배지에 첨가 될 경우 섬유소 분해효소의 생산이 저해됨을 알 수 있었다. 정제된 섬유소인 solka floc이 목질섬유소인 wheat bran과 함께 탄소원으로 사용되었을 때 각각을 섬유소 분해효소 생산의 유도 물질로 이용했을 때보다 더 높은 CMCase 활성과 FPase 활성을 보였다. Solka floe 1%와 wheat bran 3%을 탄소원으로 사용한 배지의 CMCase 활성이 76 U/ml, FPase 활성이 12.6 U/ml로 가장 높은 값을 나타내었다.

Keywords

References

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