lignin

Lignin is a complex natural polymer found in the cell walls of plants, providing structural support and rigidity. It acts like a biological glue, binding together cellulose fibers and giving plants their stiffness and resistance against pests and decay. Lignin is one of the most abundant organic materials on Earth and is essential for plant survival. In industrial uses, lignin is often a byproduct of paper manufacturing and can be converted into biofuels, chemicals, and other materials. Its resilience and structural role make lignin a key component of plant anatomy and a valuable resource for sustainable products.