In 1799, A. Hachett, an English scientist decalcified shells of crustaceans i.e. crabs, shrimps and prawns and discovered a "material particularly resistant to usual chemicals". Twelve years later, Henri Braconnot, a French scientist, extracted this new material from mushrooms and named it "fungine". In 1823, another French scientist, Odier, found "fungine" in exoskeletons of insects and named it "chitin", after the Greek word for "tunic" (Muzarelli, 1977; Khoushab and Yamabhai, 2010). Further research on chitin lead to the discovery by Lassaigne in 1843, that chitin contains nitrogen and by Ledderhose in 1878 that it is composed of glucosamine and acetic acid (Muzarelli, 1977). The term "chitin" survived to our times and refers to the one of the most abundant polymers, next to cellulose and lignin (Gao et al., 2016). Besides crustaceans, fungi and insects, chitin has been found throughout the world in numerous organisms including yeasts (
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