Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Identification and Cultural Characterization of Streptomyces Zydicus G-23 for Producing Chitinase

Chitinase를 생산하는 Streptomyces lydicus G-23의 동정 및 배양 특성

  • Published : 1993.02.01
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Abstract

Among 294 Actinomycetes isolated from soil, a strain that had appeared to produce the highest level of chitinase selected for further studies. The selected strain was identified as a Streptomyces lydicus based on the data obtained from the morphological, biochemical and cultural experiments. The cultural conditions for the enzyme production were also examined, and the results obtained were as follows: the maximal enzyme production was attained when the cells were cultured at $30^{\circ}C$ for 6 days in the medium supplemented with 2% of colloidal chitin. The optimum initial pH of the medium was observed to be 8. It was also found that the most effective carbon and nitrogen sources were soluble starch and ammonium oxalate, respectively.

토양에서 분리한 294균주 중에서 chitinase 생산성이 우수한 균주를 선택하였으며 형태학적, 생화학적 및 배양학적 실험과 Bergey's Manual of systematic Bacteriology의 색인을 통하여 Streptomyces lydicus로 동정하였다. 효소 생산의 최적 조건을 검토하여 본 결과 배양 후 6일이 경과하였을 때, 배지의 초기 pH는 8, 배양 온도는 $30^{\circ}C$, 배지에 2의 chitin을 첨가하여 배양하였을때 효소가 가장 많이 생산되었다. 또한 soluble starch, dextrin을 탄소원으로 하여 배양하였을 때, ammonium oxalazte, tryptone, casamino acid를 질소원으로 하여 배양하였을 때 효소 생산이 높게 일어났다.

Keywords

References

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