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http://dx.doi.org/10.5352/JLS.2002.12.1.043

The Optimal Conditions for Fibrinolytic Enzyme Production from Streptomyces sp. JK-20  

정영기 (동의대학교 미생물학과)
전홍기 (부산대학교 생명과학부)
김유정 (동의대학교 미생물학과)
Publication Information
Journal of Life Science / v.12, no.1, 2002 , pp. 43-48 More about this Journal
Abstract
An actinomycetes which produces fibrinolytic enzyme was isolated from soil. Characteristics of the isolated strain and the optimal conditions for the productions of fibrinolytic enzyme were summarized as follows; The fibrinolytic enzyme production strain generates gray airmycelium and had about 0.6~0.8$\times$0.4~0.8${\mu}{\textrm}{m}$ cylindrical spore, smooth surface and formed spore chain of 10~40 spores. We have identified this strain as Streptomyces sp. JK-20. This strain was able to grow up at 20~32$^{\circ}C$ and its optimum growth temperature and pH was 24$^{\circ}C$ and pH 6.0, respectively. The optimal conditions for porducing fibrinolytic enzyme; carbon source, nitrogen source, metal ions and phosphorous sources was 1% xylose, 0.5% yeast extract, 0.5% polypepton, 0.1% MgSO$_4$.7$H_2O$ and 0.1% NaH$_2$PO$_4$.2$H_2O$, respectively. This strain showed the highest productivity of fibrinolytic enzyme after the fourth day under such optimal culture conditions.
Keywords
fibrinolytic enzyme; Streptqmyces sp.;
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