Department of Organic Chemistry, Stockholm University, SE-106 91, Stockholm, Sweden.
Faraday Discuss. 2017 Sep 21;202:281-301. doi: 10.1039/c7fd00046d.
This review discusses the challenges within the research area of modern biomass fractionation and valorization. The current pulping industry focuses on pulp production and the resulting cellulose fiber. Hemicellulose and lignin are handled as low value streams for process heat and the regeneration of process chemicals. The paper and pulp industry have therefore developed analytical techniques to evaluate the cellulose fiber, while the other fractions are given a low priority. In a strive to also use the hemicellulose and lignin fractions of lignocellulosic biomass, moving towards a biorefining concept, there are severe shortcomings with the current pulping techniques and also in the analysis of the biomass. Lately, new fractionation techniques have emerged which valorize a larger extent of the lignocellulosic biomass. This progress has disclosed the shortcomings in the analysis of mainly the hemicellulose and lignin structure and properties. To move the research field forward, analytical tools for both the raw material, targeting all the wood components, and the generated fractions, as well as standardized methods for evaluating and reporting yields are desired. At the end of this review, a discourse on how such standardizations can be implemented is given.
这篇综述讨论了现代生物质分馏和增值研究领域所面临的挑战。目前的制浆工业专注于纸浆生产和由此产生的纤维素纤维。半纤维素和木质素被视为用于工艺加热和工艺化学品再生的低价值流。因此，造纸和纸浆行业已经开发出分析技术来评估纤维素纤维，而其他部分则被赋予较低的优先级。为了也利用木质纤维素生物质的半纤维素和木质素部分，朝着生物炼制概念发展，目前的制浆技术以及生物质的分析存在严重的缺陷。最近，出现了新的分馏技术，可以更有效地利用木质纤维素生物质。这一进展揭示了对半纤维素和木质素结构和性质的分析的主要缺陷。为了推动研究领域的发展，需要针对所有木材成分的原材料分析工具，以及生成的各个部分的分析工具，以及评估和报告收率的标准化方法。在这篇综述的最后，讨论了如何实施这种标准化。
