Production Systems, Natural Resources Institute Finland, Ounasjoentie 6, 96200 Rovaniemi, Finland.
Production Systems, Natural Resources Institute Finland, Tietotie 2, 02150 Espoo, Finland.
Molecules. 2020 Sep 25;25(19):4403. doi: 10.3390/molecules25194403.
This study aims to promote comprehensive utilization of woody biomass by providing a knowledgebase on the utility of aspen bark as a new alternative source for fossil-based chemicals. The research focused on the analysis of clonal variation in: (1) major chemical components, i.e., hemicelluloses, cellulose, and lignin; (2) extraneous materials, i.e., bark extractives, and suberic acid; (3) condensed tannins content and composition; and (4) screening differences in antioxidative properties and total phenolic content of hot water extracts and ethanol-water extracts of hybrid aspen bark. Results of this study, the discovery of clonal variation in utilizable chemicals, pave the way for further research on added-value potential of under-utilized hybrid aspen and its bark. Clonal variation was found in notable part of chemicals with potential for utilization. Based on the results, an appropriate bark raw material can be selected for tailored processing, thus improving the resource efficiency. The results also indicate that by applying cascade processing concepts, bark chemical substances could be more efficiently utilized with more environmentally friendly methods.
本研究旨在通过提供关于杨树木皮作为化石基化学品新替代资源的用途的知识库，促进木质生物质的综合利用。该研究侧重于分析无性系变异：（1）主要化学组成部分，即半纤维素、纤维素和木质素；（2）外来物质，即树皮浸提物和紫丁香酸；（3）缩合单宁含量和组成；以及（4）杂交杨树木皮热水提取物和乙醇-水提取物抗氧化性能和总酚含量的筛选差异。本研究的结果发现了可利用化学物质的无性系变异，为进一步研究利用不足的杂交杨及其树皮的增值潜力铺平了道路。在具有潜在利用价值的化学品中发现了显著的无性系变异。基于这些结果，可以选择合适的树皮原料进行定制加工，从而提高资源效率。结果还表明，通过应用级联加工概念，可以更有效地利用树皮化学物质，并采用更环保的方法。
