Recently, the team of Professor Yang Jianming of the School of Life Sciences has made important progress in the use of biomass resources (tree formation) in the preparation of bioethanol. Related research results have been published in Renewable Energy (2020, https://doi.org) /10.1016/j.renene.2020.06.128) (IF=6.247), Wang Zhaobao’s research assistant professor of our school is the first author of the paper, Professor Yang Jianming is the corresponding author, and Qingdao Agricultural University is the first communication unit.
Broussonetia papyrifera has the characteristics of fast growth, wide distribution and short rotation period. Its composition mainly contains cellulose, hemicellulose and lignin, and the cellulose content accounts for up to 56%. It is a kind of bio-based ethanol production. Potential lignocellulosic resources. Professor Yang Jianming's team first used Koshokia as a raw material for biomass and pretreated it with high solid loading (40% w/v) using H3PO4/H2O2 pretreatment fluid. After enzymatic saccharification, the bio-based ethanol fermentation process (including Optimization of key factors such as different feeding methods, different fermentation temperatures and different fermentation methods) (as shown in Fig. 1 and Fig. 2). In the end, a feed-nonisothermal-simultaneous saccharification and fermentation (ethanol-efficient fermentation process) was developed. The high-capacity pretreatment process and feed-non-isothermal-synchronized saccharification and fermentation process obtained in this study can be applied to the bio-fermentation process of bio-based ethanol and other bio-based chemicals and energy.
The above research work was supported by the Open Fund Project of Jiangsu Key Laboratory of Biomass Energy and Materials, the First-class Discipline Project of Grass Science in Shandong Province, and the High-level Talent Introduction Project of Qingdao Agricultural University. (Author: text / Chunxiao map / Wangchuan Long)
Fig. 1 Flowchart of simultaneous saccharification and fermentation (SSF), Fed-simultaneous saccharification and fermentation (Fed-SSF), and Fed-swing-simultaneous saccharification and fermentation (Fed-Swing-SSF).
Fig. 2 Comparison of ethanol production in SSF, Fed-SSF and Fed-Nonisothermal-SSF. Symbols: glucose (??), ethanol (??), CFU (¢), feeding time (---).
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