Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Variations of Enzyme Activities in Composting Process of Organic Refuse

유기성폐기물의 퇴비화에서의 효소활성도의 변화

  • 이영옥 (대구대학교 생명과학부) ;
  • 민봉희 (대구대학교 생명과학부)
  • Published : 1999.12.01
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Abstract

To verify the usefulness of enzyme activities as a index for the stability or maturity of organic refuse composting such as grape pomace, Vmax of $\beta$-glucosidase, cellobiohydrolase and alkaline phosphatase were measured. The peak values of all measured enzymes at the initial stage of composting were probably associated with easily degradable organic matter in the grape pomace and decreased gradually. But the activities of $\beta$-glucosidase and cellobiohydrolase were increased again rapidly whereas that of alkaline phosphatase remained approximately constant after 60 composting days. These results suggest that the increase of enzyme activities during the later periods of grape pomace composting process could be used as a index for their stability.

포도박과 같은 쥬기성 폐기물의 퇴비화에서 효소활성도가 퇴비의 안정성 혹은 부숙도를 나타내는 지표로서의 사용가능성이 있는지를 검증하기 위해 $\beta$-glucosidase, cellobiohydrolase 및 alkaline phosphatase의 활성도를 측정하였다. 측정한 모든 효소가 퇴비화초기에 최대의 활성도를 나타냈는데 이는 포도박에 잔류해있던 분해가 용이한 유기물질과 관련이 있는 것으로 추정되며 그 후 활성도는 점차감소하였다. 그러나 퇴비화 60일이 경과한 후에 $\beta$-glucosidase와 cellobiohydrolase활성도는 다시 급격히 상승했고 alkaline phosphatase의 활성도는 큰 변화를 나타내지 않았다. 퇴비화 후반기에 나타나는 이와 같은 효소활성도의 증가는 퇴비의 안정성을 나타내는 하나의 지표로 사용할 수 있음을 시사해 준다.

Keywords

References

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