Electrochemically mediated bioconversion and integrated purification greatly enhanced co-production of 1,3-propanediol and organic acids from glycerol in an industrial bioprocess

Chijian Zhang; Pawin Traitrongsat; An-Ping Zeng

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Electrochemically mediated bioconversion and integrated purification greatly enhanced co-production of 1,3-propanediol and organic acids from glycerol in an industrial bioprocess

机译：Electrochemically mediated bioconversion and integrated purification greatly enhanced co-production of 1,3-propanediol and organic acids from glycerol in an industrial bioprocess

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Abstract In this study, we show how electrochemically mediated bioconversion can greatly increase the co-production of 1,3-propanediol and organic acids from glycerol in an industrial bioprocess using a Clostridum pasteurianum mutant. Remarkably, an enhanced butyrate formation was observed due to a weakened butanol pathway of the mutant. This allowed the strain to have a higher ATP generation for an enhanced growth, higher glycerol consumption and PDO production. The PDO titer reached as high as 120.67?g/L at a cathodic current of -400?mA, which is 33 higher than that without electricity, with a concurrent increase of butyric acid by 80. To fully recover the increased PDO and organic acids, a novel downstream process combining thin film evaporation of PDO and esterification of organic acids with ethanol was developed. This enables the efficient co-production of PDO, ethyl acetate and ethyl butyrate with a high overall carbon use of 87.

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《Bioprocess and biosystems engineering》 |2023年第4期|565-575|共11页
作者
Chijian Zhang; Pawin Traitrongsat; An-Ping Zeng;
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作者单位

Hamburg University of Technology||Hua An Tang Biotech Group Co., Ltd;

Hamburg University of Technology;

Westlake University||Hamburg University of Technology;

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原文格式 PDF
正文语种英语
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Clostridium pasteurianum; Electro-fermentation; Co-production; 1; 3-propanediol; Organic acid esters;

Electrochemically mediated bioconversion and integrated purification greatly enhanced co-production of 1,3-propanediol and organic acids from glycerol in an industrial bioprocess

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