Chitin is the main component of the cell walls of fungi
Cellulose and chitin are two naturally occurring structural polymers, linear chains of polysaccharides (multiple sugars).
The main difference between cellulose and chitin is that cellulose is the most important structural polymer in the primary cell walls of plant cells, while chitin is the most important structural polymer in fungal cell walls. Chitin is the second most abundant substance on earth after cellulose. Chitin is found in fungi, insects, crustaceans, snail teeth and much more, but also in butterfly cocoons. Mushroom paper could be grown locally on waste products from agriculture and industry, thus avoiding long transport routes and reducing CO2 emissions. Eliminates costly debarking and many other processes, and could reduce energy and water consumption.