| Lignin: |
A polymer contained in the structure of wood along with cellulose that forms the essential part of the woody tissue, making up the greater part of the weight of dry wood. Mitigation Note: Natural biodegradation of lignin is slow, and it takes place only in aerobic environments. Increased biodegradation and decomposition of wood is a result of fungi infestation. See Bound Water, Poria, Wood Rot. |