普洱茶饮用安全性研究  

Microbe toxicity evaluation of Pu'er tea

作　　者：安瑜[1] 李炜[1] 侯彩云[1] 

机构地区：[1]中国农业大学食品科学与营养工程学院,北京100083

出　　处：《食品科技》2009年第4期269-271,共3页Food Science and Technology

基　　金：863计划"生鲜农产品质量安全可追溯系统研究与示范项目"(20060110Z2005)

摘　　要：选取不同储存年份普洱茶,检测其中微生物含量,对其饮用安全性进行研究。实验以市场上购买的3种不同储存年份的普洱茶为研究对象,采用国家标准方法,分别检测普洱茶茶叶和冲泡后茶汤中菌落总数、霉菌和酵母总数以及大肠菌群数,结果表明,普洱茶茶叶和茶汤中微生物含量均随储藏年份呈现一定变化规律,储存越久,微生物含量越少;茶叶和茶汤中大肠菌群实验均呈阴性。研究结果显示,本实验所选用的普洱茶中仍存在一定数量的微生物,消费者应选购正规厂家生产的普洱茶,并储存于干燥阴凉环境,以保证普洱茶的良好品质。The investigation on the safely evaluation based on the content of microbe was conducted on those three representative on Pu＇er tea samples with different years storage period by using the national standard method. Detection of aerobic bacterial count, coliform bacteria and enumeration of molds and yeasts in the tea leaves and tea liquor was did separate. The results showed that the content of microbe in Pu＇er tea leaves and liquor with different years storage period presents rule. The content of microbe was less in tea leaves and tea liquor with long storage period. No coliform bacteria has been detected in the tea leaves and tea liquor. The results showed that there were a little microbe in those three tea samples in this test. Pu＇er teas bought from regular factory are safe to consumer.

关 键 词：普洱茶 微生物 安全 

分 类 号：TS272.59[农业科学—茶叶生产加工]