Application of airlift reactor with helical sieve plate in fungal fermentation

  • LI Xiang ,
  • CHEN Yuqi ,
  • WANG Zifan ,
  • ZHENG Zhiyong ,
  • CHEN Haiqin ,
  • GAO Minjie ,
  • ZHAN Xiaobei
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  • 1(Key Laboratory of Carbohydrate Chemistry and Biotechnology,Ministry of Education,School of Biotechnology,Jiangnan University,Wuxi 214122,China)
    2(School of Environmental and Civil Engineering,Jiangnan University,Wuxi 214122,China)
    3(School of Food Science and Technology,Jiangnan University,Wuxi 214122,China)

Received date: 2020-02-21

  Revised date: 2020-04-03

  Online published: 2020-08-15

Abstract

High-performance reactors play an important role in increasing yield and energy efficiency in fermentation industries. A novel airlift reactor with helical sieve plate (ALR-HSP) developed in our laboratory had proven its excellent mass transfer characteristics in air-water system. To validate its comprehensive performance,two typical fungi (Mortierella alpine and Pichia pastoris) were selected and cultivated in ALR-HSP comparison to that of conventional airlift reactor (CALR). In the cultivation of M. alpine,the maximal specific growth rate during the logarithmic growth phase of ALR-HSP were 30% higher than that of CALR,and the total fatty acid increased by about 40% under the same culture conditions. ,The maximum specific growth rate of P. pastoris during the logarithmic growth phase of ALR-HSP was 20% higher than that of CALR,and the concentration of biomass increased by about 20%. Under the condition of low gas flow rate,the power consumption of ALR-HSP was only about half of CALR when the same kLa was reached. These data show that the ALR-HSP had superior mass transfer characteristics and power saving performance during the process of aerobic biological cultivation.

Cite this article

LI Xiang , CHEN Yuqi , WANG Zifan , ZHENG Zhiyong , CHEN Haiqin , GAO Minjie , ZHAN Xiaobei . Application of airlift reactor with helical sieve plate in fungal fermentation[J]. Food and Fermentation Industries, 2020 , 46(15) : 93 -99 . DOI: 10.13995/j.cnki.11-1802/ts.023704

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