关键词: 广东陈香茶, 品质, 安全性

Abstract: Guangdong Chenxiang tea is famous at home and aboard due to its special quality. Currently, extensive attention has been paid to Guangdong Chenxiang tea. In order to further explore its quality and safety, Guangdong Chenxiang tea was evaluate for its major indices related to quality and safety according to the national standard method using un-fermented puer tea as the reference. The results showed that Dancong Chenxiang tea and Renhua fermented brick tea had more colony number. In the present study, aflatoxin, Escherichia coli, Salmonellae and Staphylococcus aureus as well as pesticide residues were not detected. The content of heavy metal plumbum (Pb) was in the range of 4.87－0.55 mg/kg, which met the maximum limit requirements of Tea Quality Standards and Standards for Maximum Contaminant Levels in Foods. The total ash content was in the range of 6.015%－8.263% and the water-insoluble ash was in the range of 2.093%－3.224%. The water-soluble ash accounted for 50% of total ash. The acid-insoluble ash content was between 0.04% and 0.645%. Less mud and sand in tea can provide better quality and Guangdong Chenxiang tea is safe and credible.

Key words: Guangdong Chenxiang , teacquality, safety