Gaoxiang Qi1,2, Mutan Luo1,2, Chao Huang3,4,1, Haijun Guo3,4,1, Xuefang Chen3,4,1, Lian Xiong3,4,1, Bo Wang1,2, Xiaoqing Lin3,4,1, Fen Peng3,4,1, Xinde Chen3,4,1
1Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, People’s Republic of China
2University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3CAS Key Laboratory of Renewable Energy, Guangzhou 510640, People’s Republic of China
4Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, People’s Republic of China
Tóm tắt
ABSTRACTTo fulfill the comprehensive utilization of cellulose and hemicellulose components in bagasse for bacterial cellulose (BC) production, both bagasse acid and enzymatic hydrolysates were used for BC production by Gluconacetobacter xylinus. Although the BC accumulation rate was slower during the early period of fermentation in the bagasse acid hydrolysate than in the enzymatic hydrolysate, the highest BC yield (1.09 vs. 0.42 g/L) was higher in the bagasse acid hydrolysate. The substrate utilization was evaluated in both bagasse acid and enzymatic hydrolysates, and glucose, xylose, and acetic acid were better carbon sources than arabinose and cellobiose for G. xylinus. The structure of the BC samples obtained from bagasse acid and enzymatic hydrolysates, including the microscopic morphology, functional groups, and crystals, was similar especially in the later phase of fermentation, which was analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray diffraction. Thus, both bagasse acid and enzymatic hydrolysates could be promising substrates for BC production. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45066.
