한국미생물·생명공학회지 (Microbiology and Biotechnology Letters)
- 제8권2호
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- Pages.87-92
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- 1980
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- 1598-642X(pISSN)
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- 2234-7305(eISSN)
사상균에 의한 구연산효소에 관한 연구 (제II보) 선정균의 보존 및 자외선조사 효과
Studies on the Citric Acid Fermentation by Fungi (Part II) Preservation of the Selected Strains and the Effect of UV-Irradiation
초록
선정균을 장기간 보다 안전하게 관리하고 균의 성질을 개선하기 위하여 실험한 결과는 다음과 같다. 1) 선정균은 대체로 0~5
These experiments were conducted to manage more safe the selected strains and improve their characteristics. The results obtained were as follows: Preservation on soil at the range of 0 to 5 C was suitable and there were no remarkable changes on their abilities to produce citric acid until 10 months preservation. The successive transfer of spore slightly stimulated the selected strain, M-315 to produce citric acid and the spore precultured on sporulation medium for 7-10 days was desirable as inoculum. Under UV-irradiation from the selected strains, 109 mutants whose morphological characteristics were changed were isolated. Among them, the mutant M-80-12 was shown 3.2% increase on acid producing ability than that of its parent.
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