The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Studies on the Celluloytic Enzymes Produced by Stropharia rugosoannulata in Synthetic Medium

합성배지에서 Stropharia rugosoannulata가 생산하는 섬유소분해효소에 관한 연구

  • 유관희 (상지대학교 이공과대학 생물학과) ;
  • 장형수 (상지대학교 이공과대학 식품영양학과)
  • Published : 1999.04.30
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Abstract

For the purpose of utilizing cellulose resources by cellulolytic enzymes of Stropharia rugosoannulata, it's cultural conditions for the prodution of cellulolytic enzymes in synthetic media were investigated. The optimum pH for the production of Avicelase and ${\beta}-glucosidase$ was pH 5.0, while that of CMCase was pH 4.0. The optimum temperature for the production of Avicelase, CMCase and ${\beta}-glucosidase$ was $40^{\circ}C$. Among the carbon sources, xylose was good for the production of CMCase and ${\beta}-glucosidase$, but maltose was good for the production of Avicelase. The optimum concentration of the carbon sources for the production of CMCase, Avicelase and ${\beta}-glucosidase$ was 1.0, 0.8 and 1.1%, respectively. As inorganic nitrogen sources, $NH_4Cl$ was good for the production of all the three cellulolytic enzymes. The optimum concentration of $NH_4Cl$ for the production of CMCase was 0.3% while that of Avicelase and ${\beta}-glucosidase$ was 0.4%. As organic nitrogen sources, malt extract was good for the production of all the three cellulolytic enzymes. The optimum concentration of organic nitrogen for the production of ${\beta}-glucosidase$ was 1.3% while that of CMCase and Avicelase was 1.0%. As the mineral sources, $CoCl_2$ good for the was good for the production of all the three cellulolytic enzymes. The optimum concentration of $CoCl_2$ for the production of all the three enzymes was 0.35%.

섬유소자원을 이용하기 위하여 S. rugosoannulata를 합성배지에서 배양하여 cellulase 생산 최적 배양조건을 검토한 결과는 다음과 같다. S. rugosoannulata에 의한 cellulase 생산은 세 효소 모두 $40^{\circ}C$가 최적온도이었고, Avicelase와 ${\beta}-glucosidase$는 pH 5.0, CMCase는 pH 4.0이 최적조건 이었다. 탄소원은 CMCase와 ${\beta}-glucosidase$는 xylose를 Avicelase는 maltose를 탄소원으로 했을 때 최고의 생산을 나타냈으며, xylose의 최적농도는 CMCase는 1.0%, Avicelase는 0.8%, ${\beta}-glucosidase$는 1.1%이었다. 질소원은 무기질소원으로 $NH_4Cl$ 첨가시 최고의 생산성을 나타냈으며, 최적농도는 CMCase는 0.3을 Avicelase와 ${\beta}-glucosidase$는 0.4%이었으며, 유기질소원으로는 malt extarct 첨가시 높은 생산성을 나타냈으며, 최적농도는 CMCase와 Avicelase는 1.0%, ${\beta}-glucosidase$는 1.3%이었다. 무기염류로는 $CoCl_2$ 첨가시 최고의 생산성을 나타냈으며, 최적농도는 세 효소 모두 0.35%이었다.

Keywords

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