Composition Analysis of Xinhui Ganpu Tea
Recently, Ganpu tea becomes a hot product in the market. Rare earth elements, polyphenols, microorganism, pesticide residue, physicochemical indexes in Xinhui Ganpu tea were determined according to the national standard. For instance, the rare earth elements was determined by inductively coupled plasma mass spectrometry, the content of tea polyphenols was determined by spectrophotometry and the pesticide residue was determined by electron capture detector-gas chromatograph. The results showed that rare earth elements were 0. 63 ~4. 3 mg/kg, polyphenols were 1. 8% ~15. 74%, microorganism, and no pesticide residue was detected, moisture content was 2. 9% ~12. 1%, total ash content was 3. 87% ~7. 83%, water extracts content was 28. 5% ~44. 3%, crude fibre content was 1. 28% ~18. 6%. This study provided an important basis for further development andutilization of Xinhui Ganpu tea, and initially established the database of Xinhui Ganpu tea.