Abstract:On the basis of single factor experiments,the paper deals with the optimization of the synthesis conditions for the fructose glucose and glycine reaction synthesis of 1- deoxy -1-L- glycine -D- (Fructosyl-Glycine, Fru-Gly) using response surface methodology. Fru-Gly compounds were synthesized under different reaction time, reaction temperature and molar ratio of glucose to amino acid. The antioxidant capacity was evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging capacity, and reducing power. The results showed that, the concentration of Fru-Gly compound in the condition which was reacting for 0.9 h at the reaction temperature 79 ℃ after the molar ratio of glucose to glycine controlled to 3.25 ∶ 1 was the highest. And at this time the antioxidant activity of the sample was the strongest. The correlation analysis showed that the concentration of Fru-Gly compounds was significantly correlated with DPPH radical scavenging force, ABTS radical scavenging force and reduction force, and the correlation coefficient was greater than 0.96.