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茶叶科学 ›› 2014, Vol. 34 ›› Issue (6): 565-571.doi: 10.13305/j.cnki.jts.2014.06.017

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茶鲜叶中多环芳烃类化合物的分布特性研究

胡琳玲1, 刘遵莹1, 刘秋玲1, 丰金玉1, 龙金花1, 肖文军1,2,*   

  1. 1. 湖南农业大学园艺园林学院茶学系,湖南 长沙 410128;
    2. 湖南农业大学茶学教育部重点实验室,湖南 长沙 410128
  • 收稿日期:2014-06-04 修回日期:2014-08-01 出版日期:2014-12-20 发布日期:2019-09-03
  • 通讯作者: *xiaowenjun88@sina.com
  • 作者简介:胡琳玲(1988— ),女,四川广安人,硕士研究生,主要从事茶叶加工与生物化学研究。
  • 基金资助:
    国家“十二五”科技支撑计划资助项目(2012BAD33B11、2013BAD20B10)

Distribution Characteristics of the Polycyclic Aromatic Hydrocarbon Compounds in Tea Fresh Leaves

HU Linling1, LIU Zunying1, LIU Qiuling1, FENG Jinyu1, LONG Jinhua1, XIAO Wenjun1,2,*   

  1. 1. Department of Tea Science, College of Horticure and Landscape, Hunan Agricultural University, Changsha 410128, China;
    2. Key Laboratory of Education department to Tea Science, Hunan Agricultural University, Changsha 410128, China
  • Received:2014-06-04 Revised:2014-08-01 Online:2014-12-20 Published:2019-09-03

摘要: 利用高效液相色谱法分析了不同季节、不同茶树品种、不同部位茶鲜叶中16种多环芳烃(PAHs)的分布特性。结果表明,3个茶树品种,以政和大白茶鲜叶原料中PAHs的含量和标准偏差值最小,平均含量为126.92 μg·kg-1,偏差值为17.59 μg·kg-1;不同部位茶鲜叶中PAHs含量及标准偏差值表现为芽<第二叶<第四叶<第六叶,芽头PAHs含量为119.13 μg·kg-1,标准偏差值为14.36 μg·kg-1;不同季节茶鲜叶中PAHs含量及标准偏差值呈现秋<春<夏的分布特性,秋季茶鲜叶中PAHs的含量为112.75 μg·kg-1,标准偏差值为11.97 μg·kg-1;同时茶鲜叶中16种PAHs主要以2、3环PAHs为主,占PAHs总量的80%左右,4~6环PAHs相对较少。

关键词: 茶鲜叶, 多环芳烃类化合物, 分布特性

Abstract: The distribution characteristics of 16 Polycyclic Aromatic Hydrocarbon(PAHs) in different fresh tea leaves of different tea cultivars in different seasons were analyzed by using HPLC. Results showed that Zhenghedabaicha has lowest concentration of 16 PAHs and lowest standard deviation between Zhenghedabai, Taoyuandaye and Xiangfeicui, the average content is 126.92 μg·kg-1, the standard deviation is 17.59 μg·kg-1, the concentration of 16 PAHs and standard deviation in different part of tea leaves is expressed as: the bud< the second leaf< the fourth leaf< the sixth leaf, the PAHs′ concentration in bud is 119.13 μg·kg-1, standard deviation is 14.36 μg·kg-1. The concentration of 16 PAHs in different seasons is expressed as autumn<spring<summer in one year. The concentration of PAHs in autumn is 112.75 μg·kg-1, standard deviation is 11.97 μg·kg-1, 16 PAHs in fresh tea leaves are mainly composed of 2, 3 rings, account for about 80%. The proportion of 4-6 rings PAHs is lower.

Key words: fresh tea leaves, compounds of polycyclic aromatic hydrocarbon, distribution characteristics

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