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对产自云南的普洱茶碎茶、普洱条形茶进行了全氟、水溶性氟、茶多酚含量测定,水溶性氟及茶多酚含量的24小时动态观察。结果显示,普洱茶的全氟含量在206.90-293.34 mg/kg之间,水溶性氟在180.73-329.8 3mg/kg之间,水溶性氟占全氟量的78.3-87.3%。茶多酚含量在87.42-99.16mg/kg之间,若每人每日用普洱茶4g,冲泡浓度为0.5%。50分钟后饮用,摄入氟在0.54-0.55 mg之间,1440分钟后饮用,摄入氟在0.62-0.65 mg之间。在充分考虑到生态环境特点及总摄入氟量基础上,认为50-1440分钟后内,摄入氟量都具有防龋作用。茶多酚因含量偏低,防龋作用不大。在亚热带地区的低氟区、适氟区,就氟化物含量而言,普洱茶不失为一种安全、有效的防龋用茶品种。
Pu'er tea produced in Yunnan Province, Pu'er tea bar made of perfluoro, water-soluble fluorine, tea polyphenols content, water-soluble fluorine and tea polyphenols content of 24 hours dynamic observation. The results showed that the total fluorine content of Pu'er tea was 206.90-293.34 mg / kg, the water-soluble fluorine was between 180.73-329.8 3 mg / kg, and the water-soluble fluorine accounted for 78.3-87.3% of the total fluorine content. Tea polyphenols content between 87.42-99.16mg / kg, if the daily use of Pu'er tea 4g, brewing concentration of 0.5%. After 50 minutes of drinking, intake of fluoride in the 0.54-0.55 mg between 1440 minutes after drinking, intake of fluoride in the 0.62-0.65 mg. Taking full account of the characteristics of ecological environment and the total intake of fluorine, based on the view that within 50-1440 minutes, the intake of fluoride has the role of anti-caries. Low content of tea polyphenols, anti-caries little effect. In the sub-tropical regions of the low-fluoride area, suitable fluoride area, in terms of fluoride content, Pu'er tea after all, a safe, effective anti-caries tea varieties.