... Mima S In: Hirano S, Tokura S, editors Chitin and chitosan and the related enzymes Tottori: The Japanese Society of Chitin and Chitosan, 1982 p 82±6 [37] Blackwell J, Minke R, Gardner KH In: Muzzarelli ... www.elsevier.nl/locate/polymer An infrared investigation in relation with chitin and chitosan characterization J Brugnerotto a, J Lizardi b, F.M Goycoolea b, W ArguÈelles-Monal c, J DesbrieÁres a, M Rinaudo a,* ... N-acetylglucosamine The band located at 2900 cm 21, often used in the literature as reference band to analyze chitin and chitosan, must be excluded as, for glucosamine, it may not be distinguished...