Abstract: The model browning reaction products derived from the D-xylose and L-arginine (MRP_XA) were prepared under different reaction conditions (pH, reaction time and molar ratio of reactants).The effects of reaction condition on the properties of MRP_XA(color intesity, antioxidative effect on soybean oil and organoleptic evaluation of the treated cigarettes)were investigated.It was observed that the MRP_XA had strong antioxidative effect on soybean oil.The cigarettes treated with MRP_XA, prepared by reacting equimolar amounts of D-xhlose and L-arginine at pH 7 for 3h, were found to be significantly better than the contral cigarettes by the panel.The ether-soluble compounds of the reaction product were further analyzed by gas chromatography and mass spectrumetery.The analytical results showed that the major identified components were furan compounds, which gave a characteristic burnt-sugar note.