“…Because chitin and chitosan possesses many beneficially biological properties such as antimicrobial activity (Kobayashi, Watanabe, Suzuki, & Suzuki, 1990;Tokoro et al, 1989), biocompatibility, biodegradability, haemostatic activity, and woundhealing property, much attention has been paid to its biomedical applications (Farkas, 1990;Fleet & Phaff, 1981). Furthermore, antioxidant properties of chitosan derivatives have been studied (Lin & Chou, 2004;Xie, Xu, & Liu, 2001;Xing et al, 2005).…”