The main chemical composition including amino acids,tea polyphenols, caffeine,chlorophyll of Tongbaiyuye tea which were made by five varieties of Longjingchangye,Longjing43,Pingyangtezao,Baihaozao and Wuniuzao coming from tea plant improved variety breed farm in Hennan province were determined.As the results,the content of tea polyphenols is highest in Longjingchangye, the flavour is more concentrated ; the amino acids’ content of Pingyangtezao is more higher than the else ;Baihaozao’ water extracts is the ...