The Korean Journal of Mycology (한국균학회지)
- Volume 12 Issue 1
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- Pages.21-26
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- 1984
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- 0253-651X(pISSN)
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- 2383-5249(eISSN)
Application of Glucose Oxidase for the Rapid Screening of Glucoamylase-producing Fungus
진균류(眞菌類)의 Glucoamylase 활성(活性)의 검색법(檢索法)에 대한 연구
- Moon, In-Kyung (Department of Biology, Graduate School, Kon Kuk University) ;
- Lee, Hyung-Hoan (Department of Biology, Graduate School, Kon Kuk University) ;
- Kim, Jong-Hyup (Dong-Duck Women's University)
- Published : 1984.04.30
Abstract
Aspergillus awamori which produces glucoamylase was cultivated in the starch-Czapek-Dox's medium in which sucrose was depleted. A rapid method for identification and assay of glucoamylase produced by the A. awamori in the culture was established by the use of the glucose oxidase. The levels of glucose derived from the breakdown of the starch medium were assayed by using glucose oxidase, which was proved to be effective in the screening of glucoamylase-producing fungi in terms of rapid and simple determination. After the cellulose acetate electrophoresis of the precipita ted culture broth, the glucoamylase band in the gel was contacted with 2% starch solution with glucose oxidase, and then color reaction was occurred. Also this method could be effective to identify rapidly the fungal glucoamylase.
Aspergillus awamori를 전분이 함유된 Czapek-Dox배지에서 한천평판배지, 액체배지 방법으로 배양하고, glucoamylase의 생성을 glucose oxidase로서 추구하였다. 전분을 함유한 Czapek-Dox 한천배지상의 포도당의 존재와 그 함량은 glucose oxidase을 사용하여 정성, 정량 할 수 있었다. 따라서 많은 종류의 glucoamylase 생성균주를 신속하고 간편하게 검색하는 방법을 확립하였다. 정치배양은 포도당량은 많았으나, 진탕배양은 반대로 포도당 양은 적었다. 그러나 진탕배양에서 포도당이 성장과 대사에 조속히 활용 되는것 같았다. Cellulose acetate판을 이용한 전기영동법과 2% 전분용액을 사용하여 glucoamylase를 동정할 수 있었으며, 이때 glucose oxidase를 사용함으로서 확인이 쉽게 되었다. 전분 당화균의 강력 균주의 검색선발에 있어서 위의 결과를 활용할 것을 제의한다.