Harahap Budi Mandra, Ahring Birgitte K
Bioproducts, Science, and Engineering Laboratory, Washington State University Tri-Cities, 2710, Crimson Way, Richland, WA 99354, USA.
Department of Biological System Engineering, Washington State University, L. J. Smith Hall, Pullman, WA 99164, USA.
Microorganisms. 2023 Apr 11;11(4):995. doi: 10.3390/microorganisms11040995.
Biotransformation of lignocellulose-derived synthetic gas (syngas) into acetic acid is a promising way of creating biochemicals from lignocellulosic waste materials. Acetic acid has a growing market with applications within food, plastics and for upgrading into a wide range of biofuels and bio-products. In this paper, we will review the microbial conversion of syngas to acetic acid. This will include the presentation of acetate-producing bacterial strains and their optimal fermentation conditions, such as pH, temperature, media composition, and syngas composition, to enhance acetate production. The influence of syngas impurities generated from lignocellulose gasification will further be covered along with the means to alleviate impurity problems through gas purification. The problem with mass transfer limitation of gaseous fermentation will further be discussed as well as ways to improve gas uptake during the fermentation.
将木质纤维素衍生的合成气（合成气）生物转化为乙酸是从木质纤维素废料中生产生物化学品的一种很有前景的方法。乙酸的市场需求不断增长，可用于食品、塑料领域，还可升级转化为多种生物燃料和生物产品。在本文中，我们将综述合成气微生物转化为乙酸的过程。这将包括介绍产乙酸细菌菌株及其最佳发酵条件，如pH值、温度、培养基成分和合成气组成，以提高乙酸产量。还将探讨木质纤维素气化产生的合成气杂质的影响，以及通过气体净化缓解杂质问题的方法。此外，还将进一步讨论气态发酵中传质限制问题以及改善发酵过程中气体吸收的方法。
