Department of Mechanical Sciences and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
Department of Mechanical Sciences and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
Bioresour Technol. 2018 May;255:1-6. doi: 10.1016/j.biortech.2018.01.085. Epub 2018 Jan 31.
We herein investigated the effect of hemicellulose and lignin on the hydrothermal pretreatment of lignocellulosic biomass for glucose production from cellulose in terms of structural cross-linking between cellulose and the above components. A comparison was made between the hydrothermal pretreatment of biomass and a mixture containing the individual model compounds in the same composition ratio. Thus, rice straw biomass and the mixture containing cellulose, xylan, and lignin were treated in an autoclave reactor at temperatures between 150 and 250 °C for 30 min. The obtained products were then subjected to enzymatic hydrolysis. Interestingly, different results were obtained for the two samples, as the presence of cross-linking between cellulose and lignin in the original biomass sample affected the efficiency of hydrothermal pretreatment. A model was therefore proposed to account for the obtained result in accordance with previous knowledge regarding the behavior of these compounds under hydrothermal conditions.
本文研究了半纤维素和木质素对木质纤维素生物质在热水预处理过程中纤维素和上述成分之间结构交联的影响，比较了生物质与含有相同组成比例的各模型化合物混合物的热水预处理效果。因此，将水稻秸秆生物质和含有纤维素、木聚糖和木质素的混合物在高压釜反应器中于 150 至 250°C 温度下处理 30 分钟。然后对得到的产物进行酶水解。有趣的是，两个样品得到了不同的结果，因为原始生物质样品中纤维素和木质素之间的交联存在影响了热水预处理的效率。因此，根据这些化合物在热水条件下的行为的相关知识，提出了一个模型来解释所得到的结果。
