Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Optimal Medium Composition Suitable for Enhancement of Biofertilizer's Shelf Life

  • Lee, Yong-Seong (Division of Food Technology, Biotechnology and Agrochemistry, Institute of Environmentally-Friendly Agriculture, Chonnam National University) ;
  • Park, Yun-Suk (Purne Co., Ltd., Institute of Environmentally-Friendly Agriculture, Chonnam National University) ;
  • Kim, Kil-Yong (Division of Food Technology, Biotechnology and Agrochemistry, Institute of Environmentally-Friendly Agriculture, Chonnam National University)
  • Received : 2016.05.10
  • Accepted : 2016.10.04
  • Published : 2016.10.31
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Abstract

Biofertilizers are increasingly available in the market as one of the alternatives to chemical fertilizers. The supply of a high number of viable microorganisms is important for farmers. Lysobacter capsici YS1215 producing chitinases and gelatinases, isolated from soil in Korea, was evaluated for the establishment of an optimal medium condition of its shelf life under an in vitro condition. In this study, the population density of a biofertilizer (L. capsici YS1215) in media containing crab shell and gelatin powder (M1, M2, M3 and M4) was observed to be higher than that of populations grown in TSB (Tryptic soy broth) media (M5, M6 and M7) during experimental period. In addition, the population density at 11 months was over $10^6\;CFU\;mL^{-1}$ in M1, M3 and M4, but under $10^6\;CFU\;mL^{-1}$ in M2, M5, M6 and M7. The best optimal medium for the shelf life was M1 ($2.6{\times}10^6\;CFU\;mL^{-1}$) containing both chitinous and gelatinous materials at 11 months. Therefore, this study provided results of the appropriate medium composition for the enhancement of the shelf life of L. capsici YS1215.

Keywords

References

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