（ the longrun tea group has been strict with itself in the tea production with the criterion of producing medicine , thus its tea products are not only safe , hygienic and healthy , but also the choicest goods affordable to the general public 龙润以做药的理念严格要求自己，所生产的普洱茶不但保证了安全、卫生、健康，并且是大众消费者能够接受的普洱茶精品。
After 18 tea leaf producing factories were investigated , the results showed that the tea leaf of good - grade in the factories would alleviate the lead contamination in the tea leaf , while the commer tea leaf producing process can significantly increased the lead contamination in tea lead 摘要通过对18个茶叶生产厂家的分析调查发现，精制茶的生产工艺对茶叶的铅含量在总体上有降低作用，而粗制茶的加工工艺却有增加的趋势，因此茶叶生产工艺对茶叶的铅含量影响很大。
This contributes to make clearly position and function of - glc in forming course of tea aroma , substantiate the theory that the aroma of tea forms and also establish the foundation that utilize genetic engineering techniques to improve the cultivar of tea plant , quality of tea and insect - resistance and disease - resistance afterwards . in the paper , the complete cdna squence of - glc of tea was cloned in the tea leaf at the first time 因此，尝试从茶叶中获取-葡萄糖苷酶基因的cdna序列，将有助于进一步搞清-葡萄糖苷酶在茶叶花果香气形成中的地位和作用，充实茶叶香气形成的理论，也为以后利用基因工程手段改良茶树品种，提高茶叶品质、抗病虫能力以及该酶的转化、调控的研究奠定基础。
