一种用于稳定性青素提取和高度乙醇生产的水预处理
Hairui Ji1, Le Wang1, Furong Tao2
1State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue road, Jinan, 250353, China.
Bioresources and bioprocessing
|April 22, 2024
概括
这项研究引入了一种新的生物质预处理方法,使用p-Toluenessulfonic acid (p-TsOH) 和甲 (FA) 来有效提取有价值的木质素,并增强生物燃料生产的纤维素糖化.
科学领域:
- 生物质预处理 生物质预处理
- 价值的价值化 价值的价值化
- 生物燃料生产 生物燃料生产
背景情况:
- 有机酸的预处理会去除红素,但会导致不可逆转的红素凝结,阻碍价值化.
- 素凝结形成新的C-C键,对其升级潜力产生负面影响.
- 有效的生物质预处理对于生物燃料生产和木质素价值化至关重要.
研究的目的:
- 开发一种预处理策略,用于同时提取附加值的木质素和高效的纤维素糖化.
- 为了利用可回收的水 (p-TsOH) 和灭剂 (FA) 进行轻度的素溶解和稳定.
- 为了提高纤维素的酶消化能力,提高乙醇产量.
主要方法:
- 使用80% (重量) 的生物质预处理. %) p-TsOH与1.5%的FA在80°C下30分钟使用.
- 使用FTIR,TGA,2D HSQC NMR和GPC进行素表征.
- 几乎同时的糖化和发酵 (Q-SSF) 用于乙醇生产.
主要成果:
- 通过稳定,低分子量 (Mw,5371 g/mol) 的素,达到63.7%的素溶解.
- 提取的红素呈现出明亮的颜色和狭窄的多分散性 (Mw/Mn, 1.63).
- 乙醇度达到38.7±3.3g/L,在60小时发酵后,理论产量为82.9±2.2%.
结论:
- 这种p-TsOH/FA预处理策略有效地防止了木质素的凝结,从而实现了增值提取.
- 这种方法显著增强了纤维素的酶式糖化,用于生产高度乙醇.
- 该方法为综合生物质利用和生物燃料生产提供了一个有前途的途径.
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