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Bulletin of Fermentation Science and Technology >

2015 , Vol. 44 >Issue 3: 18 - 22

DOI: https://doi.org/10.16774/j.cnki.issn.1674-2214.2015.03.009

Study on different pretreatments of corn syrup used in L-threonine fermentation

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  • 1. College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China;
    2. Ningxia EPPEN Biotech Co., Ltd., Yinchuan 750100, China;
    3. Ningxia Agricultural Institute of Survey and Design, Yinchuan 750000, China
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Abstract

The acidulated corn syrup, acid-hydrolyzed corn syrup and enzymatic-hydrolyzed corn syrup were obtained through various pretreatments of corn syrup. The optimized proportion of pretreated corn syrup with good cell growth, short fermentation period and high L -threonine productivity was obtained by total amino acid analysis and L-threonine fermentation experiments. The optimum ratio of corn syrup and acid-hydrolyzed corn syrup was 2∶1. The fermentation period
was shortened to 36 h, and the yield of L-threonine was increased to 135 g/L.

Key words： L-threonine; fermentation; enzymatic-hydrolyzed corn syrup; acid-hydrolyzed corn syrup

Cite this article

NIU Fuhua, ZHANG Anhong, CHANG Liqun, XU Qingyang . Study on different pretreatments of corn syrup used in L-threonine fermentation[J]. Bulletin of Fermentation Science and Technology, 2015 , 44(3) : 18 -22 . DOI: 10.16774/j.cnki.issn.1674-2214.2015.03.009

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