Microbial co-culturing systems: butanol production from organic wastes through consolidated bioprocessing
Biobutanol can be indigenously synthesized by solventogenic Clostridium species; however, these microorganisms possess inferior capability of utilizing abundant and renewable organic wastes, such as starch, lignocellulose, and even syngas. The common strategy to achieve direct butanol production from these organic wastes is through genetic modification of wild-type strains. However, due to the complex of butanol synthetic and hydrolytic enzymes expression systems, the recombinants show unsatisfactory results. Recently, setting up microbial co-culturing systems became more attractive, as they could not only perform more complicated tasks, but also endure changeable environments. Hence, this mini-review comprehensively summarized the state-of-the-art biobutanol production from different substrates by using microbial co-culturing systems. Furthermore, strategies regarding establishment principles of microbial co-culturing systems were also analyzed and compared.
KeywordsBiobutanol Microbial co-culture Starch Lignocellulose Syngas Consolidated bioprocessing
This work was supported by the Jiangsu Province Natural Science Foundation for Youths (No. BK20170993, BK20170997); the Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture; the Project of State Key Laboratory of Materials-Oriented Chemical Engineering (KL16-08); the Key Science and Technology Project of Jiangsu Province (BE2016389); the Key Laboratory of Development and Application of Rural Renewable Energy, Biogas Institute of Ministry of Agriculture, China; and the National Natural Science Foundation of China (No. 21706125, No. 21727818, No. 21706124, No. 31700092).
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Conflict of interest
The authors declare that they have no conflict of interest.
This article does not contain any studies with human or animals performed by any of the authors.
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