AUTHOR=Yue Fengxia , Shuai Li TITLE=Editorial: Advances in the Structural Elucidation and Utilization of Lignins JOURNAL=Frontiers in Energy Research VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.724825 DOI=10.3389/fenrg.2021.724825 ISSN=2296-598X