选择性去除木质素以增强从木质纤维素生物质中制备可发酵糖和平台化学品的过程。
Selective removal of lignin to enhance the process of preparing fermentable sugars and platform chemicals from lignocellulosic biomass.
机构信息
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
出版信息
Bioresour Technol. 2020 May;303:122846. doi: 10.1016/j.biortech.2020.122846. Epub 2020 Jan 22.
The economic dependency on fossil fuels and the resulting effects on climate and environment have put more focus on finding alternative renewable sources (e.g. lignocellulose) for the production of fuels and chemicals. Nevertheless, the yield and quality of fermentable sugar and platform chemical produced by directly degradation of lignocellulose are severely restricted owing to the presence of lignin and its derivatives. Therefore, the present study was aimed to selective removal of lignin to enhance the process of preparing fermentable sugars and platform chemicals from lignocellulosic biomass. The results showed that the highest degree of delignification was 92.01%. Reducing sugar obtained by enzymatic hydrolysis of lignocellulose was suitable for L-lactic acid fermentation without appreciable inhibition. The highest cellulose digestibility and yield of 5-HMF were 90.67% and 61.02%, respectively. SO/ZrO could be reused at least 5 times without appreciable loss of catalytic performance, which shows an industrial application prospects in biorefinery.
对化石燃料的经济依赖以及由此对气候和环境造成的影响，促使人们更加关注寻找替代可再生资源（例如木质纤维素）来生产燃料和化学品。然而，由于木质素及其衍生物的存在，木质纤维素的直接降解所产生的可发酵糖和平台化学品的产量和质量受到严重限制。因此，本研究旨在通过选择性去除木质素来提高从木质纤维素生物质制备可发酵糖和平台化学品的过程。结果表明，木质素的最高脱除率为 92.01%。酶解木质纤维素得到的还原糖适合用于 L-乳酸发酵，没有明显的抑制作用。纤维素的最高消化率和 5-HMF 的产率分别为 90.67%和 61.02%。SO/ZrO 在没有明显催化性能损失的情况下至少可以重复使用 5 次，这在生物炼制中显示出了应用前景。
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