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요약정보
普洱茶急性毒性安全性评价研究报告 / Acute Toxicity Evaluation of Pu'er Tea
Resource Type
Academic Journal
Authors
刘勤晋
;
陈文品
;
白文祥
;
李清泽
Source
茶叶科学 / JOURNAL OF TEA SCIENCE
. 23(2):141-145
Subject
茶学
普洱茶
急性毒性
昆明种小白鼠
Language
Chinese
ISSN
1000-369X
Online Access
Find it @ DONGA
초록
报道了采用昆明种小白鼠,用茶汤灌胃法对三个云南产不同年份的普洱茶产品和云南大叶烘青绿茶的急性毒性对比研究结果,三个普洱茶样品的LD50分别为:9.7 g/kg、11.2 g/kg、12.2 g/kg,而测得烘青绿茶的LD50为7.5 g/kg.并发现四个样品的一次灌胃量在5 g/kg以下时喂养观察十四天没有动物死亡,1/2LD50以下的灌胃量灌胃后多数动物表现出神经兴奋症状;随着灌胃剂量加大,动物在10 min后出现神经抑制症状.三个普洱茶样的急性致死时间只有一个高峰期,而烘青绿茶则有两个死亡高峰期,死亡原因是由过高浓度的咖啡碱和茶多酚有关,从LD50来看,两类茶叶的食用安全性都很高,但科学的饮茶法是饮茶健身的必然要求.
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