Improvement in bacterial cellulose production by co-culturing Bacillus cereus and Komagataeibacter xylinus.

Wenchao Li, Xinxin Huang, Huan Liu, Hao Lian, Bin Xu, Wenjin Zhang, Xuewen Sun, Wei Wang, Shiru Jia, Cheng Zhong

Carbohydrate polymers 2023 Aug 01

filter terms:

Bacterial cellulose (BC) is a bio-produced nanostructure material widely used in biomedical, food, and paper-manufacturing industries. However, low production efficiency and high-cost have limited its industrial applications. This study aimed to examine the level of improvement in BC production by co-culturing Bacillus cereus and Komagataeibacter xylinus. The BC yield in corn stover enzymatic hydrolysate was found to be obviously enhanced from 1.2 to 4.4 g/L after the aforementioned co-culturing. The evidence indicated that acetoin (AC) and 2,3-butanediol (2,3-BD) produced by B. cereus were the key factors dominating BC increment. The mechanism underlying BC increment was that AC and 2,3-BD increased the specific activity of AC dehydrogenase and the contents of adenosine triphosphate (ATP) and acetyl coenzyme A (acetyl-CoA), thus promoting the growth and energy level of K. xylinus. Meanwhile, the immobilization of BC could also facilitate oxygen acquisition in B. cereus under static conditions. This study was novel in reporting that the co-culture could effectively enhance BC production from the lignocellulosic enzymatic hydrolysate. Copyright © 2023 Elsevier Ltd. All rights reserved.

Citation

Wenchao Li, Xinxin Huang, Huan Liu, Hao Lian, Bin Xu, Wenjin Zhang, Xuewen Sun, Wei Wang, Shiru Jia, Cheng Zhong. Improvement in bacterial cellulose production by co-culturing Bacillus cereus and Komagataeibacter xylinus. Carbohydrate polymers. 2023 Aug 01;313:120892