lignint
Lignin is a complex organic polymer found in the cell walls of plants, particularly in woody tissues. It is one of the most abundant natural polymers on Earth, second only to cellulose. Lignin plays a crucial role in providing structural support and rigidity to plants, allowing them to stand upright and resist mechanical stress. It also acts as a barrier, preventing water and pathogen entry into plant tissues.
Chemically, lignin is a heteropolymer composed of phenylpropane units. These units are linked together in a
The presence of lignin is what gives wood its characteristic brown color and hardness. It is a