Influence of nutritional conditions on the mycelial growth and exopolysaccharide production in Paecilomyces sinclairii

  • Kim S
  • Hwang H
  • Xu C
 et al. 
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AIMS: The objective of the study was to optimize the submerged culture conditions for the production of exopolysaccharide from Paecilomyces sinclairii.

METHODS AND RESULTS: The optimal temperature and initial pH for exopolysaccharide production by Paecilomyces sinclairii in shake flask culture were found to be 30 degrees C and 6.0, respectively. Sucrose (60 g l(-1)) and corn steep powder (10 g l(-1)) were the most suitable carbon and nitrogen source for exopolysaccharide production.

CONCLUSIONS: Under optimal culture medium, the maximum exopolysaccharide concentration in a 5-l stirred-tank fermenter indicated 7.4 g l(-1), which was approximately three times higher than that in basal medium. The maximum specific growth rates (micro max) and yield coefficient (Y(P/S)) in the optimal culture medium was 0.16 h(-1) and 0.19, respectively.

SIGNIFICANCE AND IMPACT OF THE STUDY: The optimal culture conditions reported in this article can be widely applied to the processes for submerged cultures of other mushrooms.

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  • S. W. Kim

  • H. J. Hwang

  • C. P. Xu

  • Y. S. Na

  • S. K. Song

  • Jong Won Yun

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