Abstract: Oyster?enzymatic hydrolysate and glucose were used to establish a Maillard reaction system. The reaction conditions were optimized based on sensory evaluation and browning degree, and the nutritional quality of Maillard reaction products was evaluated by amino acid score (AAS), chemical score (CS), and essential animo acids index (EAAI). The optimal reaction parameters were determined as follows: glucose concentration, 8%; temperature, 110 ℃; pH value, 7.5; and reaction time, 90 min. In the Maillard reaction products, 18 amino acids were detected with essential amino acids (EAAs) accounting for 32.99% of the total amino acids. EAA index (EAAI) was 71.568 indicating high nutritional quality. Umami amino acids, especially glutamic acid, were abundant.

Key words: oyster enzymatic hydrolyzate, Maillard reaction, glucose, nutritional evaluation