摘要
目的了解云南普洱茶中铜含量的质量安全状况。方法采集云南普洱茶主产地的150份普洱茶样品,采用原子吸收光谱法进行检测。结果样品中铜含量为12.1～22.9mg/kgDW,普洱茶铜含量在各主产地区之间、在生熟茶工艺之间,差异有统计学意义(P<0.05)。结论普洱生茶和熟茶不同的工艺特点确会引起终产品中铜含量的差异,但所有样品中铜含量均未超出国家最大限量标准60mg/kgDW,不会造成铜污染。
Objective To investigate the quality and safety of copper in Chinese Pu＇er tea. Method One hundred and fifty Chinese Pu＇er tea samples were collected from five regions of Yunnan province, including 13 main origin of Pu＇er tea. The copper content was analyzed according to the National Standard method GB/T 5009. 13--2003, Results The copper contents were in the range of 12. 1-22.9 mg/kg OW in all samples. The copper contents of Pu＇er tea were varied both by different regions （Xishuangbanna, Simao, Lincang, Baoshan and Dali） of Yunnan province and by different preparation methods （raw tea or prepared tea） from the same origin. However, the safety was not affected. Conclusion The copper content in Chinese Pu＇er tea was in good quality and safe.
出处
《中国食品卫生杂志》
北大核心
2010年第1期57-59,共3页
Chinese Journal of Food Hygiene
基金
国家科技支撑计划课题(2007BAD58B05-3)
关键词
普洱荼
铜
质量安全
Pu＇er Tea
Copper
Quality Safe
