Fig. 2: Characterization of non-enzymatic browning glucose.

a FTIR spectra of glucose, APTE-BTMO-glucose, Pd/APTE-BTMO-glucose and Pd/APTE-glucose; b FTIR spectra of cellulose, APTE-BTMO-cellulose and fresh Pd/APTE-BTMO-cellulose; c 13C NMR of glucose, APTE-BTMO-glucose, Pd/APTE-BTMO-glucose and Pd/APTE-glucose; d 13C NMR of cellulose, APTE-BTMO-cellulose and Pd/APTE-BTMO-cellulose.