Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil.
Federal University of Technology - Paraná, Department of Bioprocess Engineering and Biotechnology, 84016-210 Ponta Grossa, Paraná, Brazil.
Bioresour Technol. 2020 May;304:122848. doi: 10.1016/j.biortech.2020.122848. Epub 2020 Jan 21.
Lignocellulosic biomass is one of the most abundant organic resources worldwide and is a promising source of renewable energy and bioproducts. It basically consists of three fractions, cellulose, hemicelluloses and lignin, which confer a recalcitrant structure. As such, pretreatment steps are required to make each fraction available for further use, with acidic, alkaline and combined acidic-alkaline treatments being the most common techniques. This review focuses on recent strategies for lignocellulosic biomass pretreatment, with a critical discussion and comparison of their efficiency based on the composition of the materials. Mild pretreatments usually allow the recovery of the three biomass fractions for further transformation and valorisation. An insight is provided of newly developed technologies from recently filed patents on lignocellulosic biomass pretreatment and the transformation of agro-industrial residues into high value-added products, such as biofuels and organic acids.
木质纤维素生物质是全球最丰富的有机资源之一，是可再生能源和生物制品的有前途的来源。它主要由纤维素、半纤维素和木质素三种组分组成，这些组分赋予了其顽固的结构。因此，需要进行预处理步骤以使每种组分都可用于进一步使用，其中酸性、碱性和酸性-碱性联合处理是最常见的技术。本综述重点介绍了木质纤维素生物质预处理的最新策略，并根据材料的组成对其效率进行了批判性讨论和比较。温和的预处理通常允许回收三种生物质组分，以进一步转化和增值。本文还介绍了最近从木质纤维素生物质预处理和将农业工业残渣转化为高附加值产品（如生物燃料和有机酸）的专利中开发的新技术。
