Chitin-xylan hybrid polysaccharide

Cellulose-Xylan Hybrid Polysaccharide (46) and Chitin-Xylan Hybrid Polysaccharide (47)... 

Here, compounds 10 and 13 were chemically synthesized as monomers for the synthesis of cellulose-xylan hybrid polysaccharide 11, and chitin-xylan hybrid polysaccharide 14, respectively (Figure 8). 

Chitinase from Bacillus sp. was added to a solution of Xyl (l— 4)GlcNAc oxazoline 13 dissolved into a phosphate buffer. The consumption rate of 13 was accelerated by the enzyme addition and chitin-xylan hybrid polysaccharide 14 was produced. During the polymerization, the reaction proceeded homogenously throughout the reaction. The yield was 76% and its average molecular weight value of 14 was M = 1500 with MJMa = 1.76, determined by GPC. Furthermore, MALDI-TOF mass spectrum of 14 indicated the peaks at every m/z 335, which corresponds to the molecular mass of the repeating disaccharide unit. 

Kobyashi S., Makino A., Tachibana N., Ohmae M., Chitinase-catalyzed synthesis of a chitin-xylan hybrid polymer A novel water-soluble P(1 <— 4) polysaccharide having an JV-acetylglucosamine-xylose repeating unit, Macromol. Rapid Comm., 27,2006, 781-786. 

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