Mario J. Rosado is a predoctoral researcher at the Institute of Natural Resources and Agrobiology of Seville (IRNAS-CSIC, Spain) in the group of Prof. José C. del Río. Currently, he is finishing his PhD in chemistry at the University of Seville with the financial support of a scholarship from the Spanish Ministry of Science. His research interest is in the structural characterization of lignin from agricultural wastes and nonwoody plants using different techniques, such as GPC, Py-GC/MS, 2D-NMR, and DFRC. In addition, his investigations have resulted in several publications.