Abstract:The main taste-active components in the microwave-treated/boiled Litopenaeus vannamei, including the free amino acid,nucleotide, organic acid, betaine and inorganic ions, were quantified with instrumental analysis methods. The free amino acids contents in the microwave-cooked shrimp and boiled shrimp were decreased by 15.81% and 20.19%, respectively. After microwave and water-boiled treatments, the contents of nucleotides were decreased by 25.07% and 25.89%, respectively, while adenosine monophosphate (AMP) were increased by 4.01% and 5.95%. The contents of lactic acid and betaine were significant difference, lactic acid were decreased by 53.64% and 77.24%, respectively, while betaine were 7.26% and 8.83%, respectively. Moreover, the contents of inorganic ions in the microwave-cooked shrimp were higher than those of the boiled one. Expect the AMP, higher free amino acid,organic acid, betaine and inorganic ions contents were found in the microwave-cooked shrimp than in the boiled shrimp,,showeing that the taste of the microwave cooking shrimp was better than the boiled shrimp.
