Diverse Novel Lignins

New skeleton lignins are also few in nature plants, since 1999, 33 new skeleton lignins, assigned to 10 families 11 genuses, have been isolated and identified from plants (872–904, Fig. 10.1; Table A9). Schisandraeaceae contributed more disesquiterpenes than other families. This review will focus on the names, classes, structure characteristics, activities, the types of compounds, and plant sources of these new skeleton lignins.