Pullulan production from synthetic medium by a new mutant of Aureobasidium pullulans
文献类型: 外文期刊
第一作者: Chen, Guoqiang
作者: Chen, Guoqiang;Wang, Jiming;Zhang, Ge;Zhao, Hongwei;Yang, Ying;Nian, Rui;Zhang, Haibo;Xian, Mo;Chen, Guoqiang;Wei, Yuxi;Su, Yulong;Zhang, Ge;Liu, Haobao;Zhu, Youshuang
作者机构:
关键词: Aureobasidium pullulans;fermentation conditions;FTIR;NMR;pullulan;TLC
期刊名称:PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY ( 影响因子:2.162; 五年影响因子:1.901 )
ISSN: 1082-6068
年卷期: 2017 年 47 卷 10 期
页码:
收录情况: SCI
摘要: Pullulan with different molecular-weight could be applied in various fields. A UV-induced mutagenesis Aureobasidium pullulans UVMU6-1 was obtained from the strain A. pullulans CGMCC3.933 for the production of low-molecular-weight pullulan. First, the obtained polysaccharide from A. pullulans UVMU6-1 was purified and identified to be pullulan with thin-layer chromatography, Fourier transform infrared, and nuclear magnetic resonance. Then, culture medium and conditions for this strain were optimized by flask fermentation. Based on the optimized medium and culture conditions (pH 4, addition of 4g/L Tween 80 for 96hr of cultivation), continuously fermentation was performed. The highest pullulan production and dry biomass was 109 and 125g/L after fermentation for 114hr, respectively. The average productivity was about 1g/L/hr, which was intensively higher than the previous reported. This study would lay foundations for the industrial production of pullulan.
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