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首页> 外文期刊>Biotechnology Advances: An International Review Journal >Biological valorization of low molecular weight lignin
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Biological valorization of low molecular weight lignin

机译：低分子量木质素的生物增值

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Lignin is a major component of lignocellulosic biomass and as such, it is processed in enormous amounts in the pulp and paper industry worldwide. In such industry it mainly serves the purpose of a fuel to provide process steam and electricity, and to a minor extent to provide low grade heat for external purposes. Also from other biorefinery concepts, including 2nd generation ethanol, increasing amounts of lignin will be generated. Other uses for lignin- apart from fuel production- are of increasing interest not least in these new biorefinery concepts. These new uses can broadly be divided into application of the polymer as such, native or modified, or the use of lignin as a feedstock for the production of chemicals. The present review focuses on the latter and in particular the advances in the biological routes for chemicals production from lignin. Such a biological route will likely involve an initial depolymerization, which is followed by biological conversion of the obtained smaller lignin fragments. The conversion can be either a short catalytic conversion into desired chemicals, or a longer metabolic conversion. In this review, we give a brief summary of sources of lignin, methods of depolymerization, biological pathways for conversion of the lignin monomers and the analytical tools necessary for characterizing and evaluating key lignin attributes. (C) 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license.
机译：木质素是木质纤维素生物质的主要成分，因此，在全世界的制浆和造纸工业中，木质素的加工量很大。在这种工业中，它主要用于提供过程蒸汽和电力的燃料，并在较小程度上为外部目的提供低等级的热量。同样从其他生物精炼概念，包括第二代乙醇，将产生越来越多的木质素。除了燃料生产之外，木质素的其他用途也越来越引起人们的关注，尤其是在这些新的生物精炼概念中。这些新用途可大致分为天然的或改性的聚合物本身的应用，或木质素作为生产化学品的原料的用途。本综述着重于后者，尤其是木质素生产化学品的生物途径的进展。这样的生物学途径可能涉及初始解聚，随后是所获得的较小木质素片段的生物学转化。该转化可以是短催化转化成所需化学物质，或者是更长的代谢转化。在这篇综述中，我们简要概述了木质素的来源，解聚方法，木质素单体转化的生物途径以及表征和评估关键木质素属性所必需的分析工具。 （C）2016作者。由Elsevier Inc.发行。这是CC BY-NC-ND许可下的开放获取文章。

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