. 2018 Apr 10;23(4):868. doi: 10.3390/molecules23040868
© 2018 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Figure 6.
Oxidation of softwood kraft lignin [96].