Dharmaraja Jeyaprakash, Shobana Sutha, Arvindnarayan Sundaram, Francis Rusal Raj, Jeyakumar Rajesh Banu, Saratale Rijuta Ganesh, Ashokkumar Veeramuthu, Bhatia Shashi Kant, Kumar Vinod, Kumar Gopalakrishnan
Division of Chemistry, Faculty of Science and Humanities, AAA College of Engineering and Technology, Amathur-626005, Virudhunagar District, Tamil Nadu, India.
Green Technology and Sustainable Development in Construction Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Vietnam.
Bioresour Technol. 2023 Feb;369:128328. doi: 10.1016/j.biortech.2022.128328. Epub 2022 Nov 17.
Lignocellulose biomass during pretreatment releases various compounds, among them the most important is reducing sugars, which can be utilized for the production of biofuels and some other products. Thereby, innovative greener pretreatment techniques for lignocellulosic materials have been considered to open a new door in the aspects of digestibility of the rigid carbohydrate-lignin matrix to reduce the particle size and remove hemicellulose/lignin contents to successfully yield valid bioproducts. This article reviews about the composition of lignocelluloses and emphasizes various green pretreatments viz novel green solvent-based IL and DES steam explosion, supercritical carbon dioxide explosion (Sc-CO2) and co-solvent enhanced lignocellulosic fractionation (CELF) along with suitable mechanistic pathway of LCB pretreatment process. Finally, this article concludes that the existing pretreatments should be redesigned to conquer the demands by large scale production and suggests combined pretreatment methods to carry out various biomass pre-processing.
木质纤维素生物质在预处理过程中会释放出各种化合物，其中最重要的是还原糖，还原糖可用于生产生物燃料和其他一些产品。因此，人们认为创新的绿色预处理技术可为木质纤维素材料打开新的大门，在坚硬的碳水化合物-木质素基质的可消化性方面，减小颗粒尺寸并去除半纤维素/木质素含量，从而成功生产出有效的生物产品。本文综述了木质纤维素的组成，并着重介绍了各种绿色预处理方法，即基于新型绿色溶剂的离子液体和深共熔溶剂蒸汽爆破、超临界二氧化碳爆破（Sc-CO2）和共溶剂强化木质纤维素分级分离（CELF），以及木质纤维素生物质预处理过程合适的作用机制途径。最后，本文得出结论，现有的预处理方法应重新设计以满足大规模生产的需求，并建议采用联合预处理方法来进行各种生物质的预处理。
