The taste quality and delicious amino acid composition of Huoshanhuangya Tea with different grades were determined by the electronic tongue and HPLC to rapidly and scientifically decide tea grade.Results:The umami and complex taste values of Huoshanhuangya Tea with different grades decrease from Special grade 1 and Grade 1 to Grade 3 significantly.Total free amino acid amount of Huoshanhuangya Tea with Special grade 1,Grade 1 and Grade 3 is 51.92 mg/g,46.45 mg/g and 43.01 mg/g respectively and the theanine content of Huoshanhuangya Tea with Special grade 1,Grade 1 and Grade 3 accounts for above 70 ％ of total free amino acid.Total free amino acid and theanine content of Huoshanhuangya Tea with Special grade 1 and Grade 1 are higher than Huoshanhuangya Tea with Grade 3 significantly.The monocomponent amino acid content of Huoshanhuangya Tea with three different grades is 0.02～29.811 mg/g.The Glu,Ser,Arg,Ala,Ile,Leu and Lys content of Huoshanhuangya Tea with Special grade 1 is higher than Huoshanhuangya Tea with Grade 1 obviously.The umami value of tea soup is positively related to amino acid content of tea soup.The electronic tongue can be used to decide the grade of Huoshanhuangya Tea based on amino acid composition and content of Huoshanhuangya Tea.
NETL
NSTL
维普
万方数据
