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Selection of Carbon, Nitrogen Source and Carrier for Mass Production of Beauveria bassiana

Beauveria bassiana 대량배양을 위한 탄소원, 질소원 및 고체 기질 선발

  • Kim, Jeong Jun (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA) ;
  • Han, Ji Hee (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA) ;
  • Lee, Sangyeob (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
  • 김정준 (농촌진흥청 국립농업과학원 농업미생물과) ;
  • 한지희 (농촌진흥청 국립농업과학원 농업미생물과) ;
  • 이상엽 (농촌진흥청 국립농업과학원 농업미생물과)
  • Received : 2014.11.23
  • Accepted : 2014.12.13
  • Published : 2014.12.30

Abstract

For mass production of entomopathogenic fungus Beauveria bassiana 149, isolated from moth larva, by two-phase fermentation, we performed selection of carbon and nitrogen sources for liquid culture and examined solid fermentation on carrier, ingredient, temperature, and water content. Spore production with rice powder, corn powder, and starch from sweet potato was higher than that of sucrose and dissolvable starch for liquid fermentation as first-phase fermentation. As a nitrogen source, addition of peptone and yeast powder showed higher spore production than $NaNO_3$, fish powder, and soybean powder. The isolate produced more conidia in sawdust + wheat bran + corn powder, sawdust + wheat bran and rice shell + wheat bran as carrier and ingredient than vermiculite as carrier. Conidia production of B. bassiana 149 in solid-phase fermentation was twice higher at 30 than 20. Conidia yield was higher at 60% and 70% water content ($26.9{\times}10^8$ and $38.6{\times}10^8conidia/g$) than 40% and 50% ($13.9{times}10^8 $and $11.6{\times}10^8conidia/g$), respectively.

Two-phase fermentation을 통한 Beauveria bassiana 149균주의 대량 배양을 위한 탄소원, 질소원, 기질 그리고 배양 조건 선발 실험을 실시하였다. 1차 액체 배양을 위한 적정 탄소원으로는 옥수수 분말, 전분 그리고 쌀가루가, 질소원으로는 펩톤과 효모 분발을 첨가한 것에서 포자 생산량이 높았다. 포자 대량 생산을 위한 기질 및 첨가물로는 톱밥+밀기울+옥수수 분말, 톱밥+밀기울, 쌀겨+밀기울 혼합에서 포자 생산량이 높았다. B. bassiana 149 균주의 포자 대량 생산을 위한 고체 배양 결과, 포자 생산량은 $30^{\circ}C$ 배양에서 $20^{\circ}C$보다 2배 정도 높은 경향을 보였다. B. bassiana 149 균주의 포자 생산량은 $25^{\circ}C$, 수분함량 60%와 70%에서 배양 시 $26.9{\times}10^8conidia/g$$38.6{\times}10^8conidia/g$로 40%와 50%의 $13.9{\times}10^8conidia/g$$11.6{\times}10^8conidia/g$ 보다 상당히 높았다.

Keywords

References

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