Preparation of chitosan-glucosamine derivatives (Maillard reaction products) by gamma Co-60 irradiation method and investigation of antibacterial activity

The mixture solutions of glucosamine and chitosan with different molecular weights (123.5; 40.7 and 6.1 kDa) were irradiated by Co-60 gamma ray at dose of 50 kGy to prepare chitosanglucosamine Maillard reaction products (MRPs). The formation of MRPs was determined by measuring UV absorbance (at 284) nm and browning (at 420 nm).