chains indicating an anti-parallel arrangement of the chitin chain
with strong intermolecular hydrogen bonding (Wada & Saito,
2001). The crystalline reflections were observed in the 2h range
of 5–30 (Fig. 1c). The observed patterns of the crystalline peaks
in the 2h range were indexed as 9.39, 19.72 and 20.73 for the
lower angle for chitin. As shown in Fig. 1(c) exhibited a broad signal
centered at 2h = 19.72, which is attributed to the N-glucosamine
(GlcN) sequences. Similarly, the intensity of the broad
signal centered at 2h = 9.39 due to N-acetyl-D-glucosamine (Glc-
NAc) sequences (Jayakumar & Tamura, 2008).