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.
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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