Influences of both ultrastructural modification of cellulose after hydrothermal pretreatment and products derived from lignin‐carbohydrate complex (LCC) on the subsequent enzymatic digestibility and fermentation were studied in this study. Under hydrothermal conditions, it was found that the rearrangement of hydrogen bonding pattern in cellulose via allomorph and conformational changes which was mainly severity‐dependent increased the numbers of water‐exposed glycosidic bond and the formation of “amorphous‐like” cellulose fibril facilitated enzymatic hydrolysis. Pseudo lignin, soluble xylo‐oligomers, phenols and degradation products from high severity impeded enzymatic digestion. LCC and phenols which were rich in pH‐controlled prehydrolyzate did not sufficiently inhibit yeast while furans and some aromatics which were rich in high‐severity prehydrolyzate might be potential inhibitors. Trade‐off phenomenon was solved by pH‐controlled operation and high yields in both glucose (83–93%) and xylose (75–80%) were simultaneously obtained. The final ethanol yield from cellulose to ethanol reached as high as 84–93%. © 2018 American Institute of Chemical Engineers AIChE J, 64: 1954–1964, 2018

中文翻译：

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用于植物细胞壁解构的水热预处理：第二部分。对纤维素结构和生物转化的影响

研究了水热预处理后纤维素的超微结构改性以及木质素-碳水化合物复合物（LCC）衍生产物对后续酶消化率和发酵的影响。在水热条件下，发现同素异形和构象变化使纤维素中的氢键模式重排，这主要取决于严重程度，增加了水暴露的糖苷键的数量，“无定形”纤维素原纤维的形成促进了酶水解。 。伪木质素，可溶性木糖低聚物，酚类和严重程度高的降解产物会阻碍酶消化。富含pH控制的预水解产物的LCC和苯酚不能充分抑制酵母，而富含高强度预水解产物的呋喃和某些芳香族化合物可能是潜在的抑制剂。通过pH值控制的操作解决了权衡现象，同时获得了葡萄糖（83-93％）和木糖（75-80％）的高产量。从纤维素到乙醇的最终乙醇收率高达84–93％。©2018美国化学工程师学会AIChE J，64：1954–1964，2018