Taste-active components of the autolysates of Penaeus vannamei's head were investigated.Results showed that the content of free amino acids was high,reaching 9300mg/L,in which aspartic acid,glutamic acid,glycine,alanine accounted for 22.9%.Among nucleotide and nucleotide-related compounds,the content of inosine monophosphate(IMP) was 6.12mg/L.The content of Na~+,K~+,Cl~- was 663.7mg/L,182.1mg/L and 417.2mg/L,respectively.While the content of betaine,lactic acid and succinic acid was 2400mg/L15.27mg/L and 13...