欢迎访问《茶叶科学》,今天是

茶叶科学 ›› 2017, Vol. 37 ›› Issue (2): 173-181.

• • 上一篇    下一篇

六堡茶急性和亚急性毒性安全性评价研究

吴文亮1,2,3,6, 林勇1,2,3,*, 刘仲华1,2,3, 黄建安1,2,3, 龙志荣4,5, 滕翠琴4,5, 马士成4,5, 邱瑞瑾4,5, 曹中环4,5   

  1. 1. 湖南农业大学茶学教育部重点实验室,湖南 长沙 410128;
    2. 国家植物功能成分利用工程技术研究中心,湖南 长沙 410128;
    3. 植物功能成分利用协同创新中心,湖南 长沙 410128;
    4 . 梧州市六堡茶研究院,广西 梧州 543003;
    5. 梧州市农业科学研究所,广西 梧州543003;
    6. 湖南省农业科学院茶叶研究所,湖南 长沙 410125
  • 收稿日期:2017-01-11 修回日期:2017-02-26 出版日期:2017-04-15 发布日期:2019-08-22
  • 通讯作者: *ly2005306@163.com
  • 作者简介:吴文亮,男,在读博士研究生,主要从事茶叶加工及茶叶功能成分化学研究。
  • 基金资助:
    湖南农业大学青年科学基金项目(15QN22)、梧州市科学研究与技术开发计划项目(201402214、201501028)、2015年梧州市六堡茶产业化项目、国家自然科学基金项目(31100502)

Research on Acute and Subacute Toxicity Evaluation of Liupao Tea

WU Wenliang1,2,3,6, LIN Yong1,2,3,*, LIU Zhonghua1,2,3, HUANG Jian'an1,2,3, LONG Zhirong4,5, TENG Cuiqing4,5, MA Shicheng4,5, QIU Ruijin4,5, CAO Zhonghuan4,5   

  1. 1. Key Lab of Tea Science of Education Ministry, Hunan Agricultural University, Changsha 410128, China;
    2. National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China;
    3. Collaborative Innovation Center of Utilization of Functional Ingredients from Botanicals, Changsha 410128, China;
    4. Wuzhou Academy of Liupao Tea, Wuzhou 543003, China;
    5. Wuzhou Institute of Agricultural Sciences, Wuzhou 543003, China;
    6. Tea of Institute, Hunan Academy of Agricultural Sciences , Changsha 410125, China
  • Received:2017-01-11 Revised:2017-02-26 Online:2017-04-15 Published:2019-08-22

摘要: 六堡茶产制历史悠久,是广西特色名优农产品,但其安全性研究不够。为了探明六堡茶饮用的安全性,本实验以广西梧州六堡茶为原料,采用国家标准方法分析六堡茶常规理化成分;并按照食品安全性毒理学评价程序,进行较系统的六堡茶急性毒性和亚急性毒性实验。结果表明:六堡茶理化指标符合广西地方标准,且3个批次有较好的重复性;在小鼠急性毒性试验中,采用bliss法计算得出六堡茶半数致死剂量(LD50)为9.38βg·kg-1,95%的可信限为8.43~10.44βg·kg-1,大于5βg·kg-1的经口急性毒性标准;采用大鼠30βd喂养实验发现,期间动物的生长发育良好,六堡茶3个剂量组(0.47βg·kg-1·d-1、0.94βg·kg-1·d-1、1.88βg·kg-1·d-1)的动物体质量、血常规指标、血生化指标、脏器指数与对照组比较,均无显著性差异(P>0.05)。因此从食品毒理学的标准来看,六堡茶属于无毒级食品,符合食品安全性要求。

关键词: 六堡茶, 急性毒性, 亚急性毒性, 半致死剂量

Abstract: Liupao tea has a long history and is characterized as famous agricultural products of Guangxi, but the study of its safety is not enough. In order to verify the safety, the main physicochemical components of Liupao tea from Wuzhou were measured by conventional test method of national standard, then, the acute and subacute toxicities of Liupao tea were systemically studied in accordance with the procedures for toxicological assessment on food safety. The experimental results showed that, the physicochemical indexes of Liupao tea were repeatable, which were followed with Guangxi local standards in the acute toxicity test. Using bliss method, the calculated median lethal dose (LD50) of Liupao tea was 9.38 g·kg-1 with 95% confidence interval (8.43~10.44 g·kg-1), which was higher than acute toxicity criteria (5 g·kg-1). In the subacute study, compared with the control group, no death or clinical signs, or abnormally hematological, biochemical and histopathological changes were found in either groups of rats receiving daily oral gavage of Liupao tea. The three dose treatments were 0.47, 0.94 and 1.88 g·kg-1·d-1 for 30 days (P>0.05). Thus, Liupao tea products belong to the actual non-toxic grade and fulfill the requirements of food safety according to the food toxicology standards.

Key words: Liupao tea, acute toxicity, subacute toxicity, median lethal dosage

中图分类号: