南方与北方茶叶中矿质元素研究  

Study on Mineral Elements in Tea from of South and North China

作　　者：刘元林[1] 张棚 张宇霞 田晓静[1] 曹竑[1] 马忠仁[1,2] 宋礼 罗丽 LIU Yuan-lin;ZHANG Peng;ZHANG Yu-xia;TIAN Xiao-jing;CAO Hong;MA Zhong-ren;SONG Li;LOU Li(College of Life Science and Engineering,Northwest University for Nationalities,Lanzhou 730124,China;Biomedical Research Center,Northwest University for Nationalities,Lanzhou 730030,China;Integrated Technology Center of Lanzhou Customs,Lanzhou 730100,China;Gannan Research Institute of Yak Milk,Lanzhou 747000,China)

机构地区：[1]西北民族大学生命科学与工程学院,甘肃兰州730124 [2]西北民族大学生物医学研究中心,甘肃兰州730030 [3]兰州海关综合技术中心,甘肃兰州730100 [4]甘南牦牛乳研究院,甘肃兰州747000

出　　处：《茶叶通讯》2020年第3期456-461,共6页Journal of Tea Communication

基　　金：中央高校基本科研业务费专项(Yxm2020124,31920190022);甘肃省自然科学基金(18JR3RA371)。

摘　　要：基于火焰原子吸收光谱法检测茶叶中10种矿质元素含量,其加标回收率在95%~105%,相对标准偏差(RSD)均在0.5%以内。方差分析发现南、北方茶叶中矿物质含量差异性显著,但都呈现出Ca元素含量最高,Mg、Mn、Na元素丰富,Zn、Se、Fe、Cu次之,Pb与Cd含量最低的规律;主成分分析发现利用茶叶矿物质含量差异可以实现南北方茶叶区分,且南北方茶叶分布具有一定规律。The contents of 10 mineral elements in tea were determined by flame atomic absorption spectrometry,the standard recovery rate were in the range of 95%-105%,and the relative standard deviation(RSD)was within 0.5%.The variance analysis showed that there were significant difference in mineral content between the southern and northern tea,but both presented a rule:the highest content of Ca,abundant in Mg,Mn and Na,followed by Zn,Se,Fe and Cu,and the lowest content of Pb and Cd.The principal component analysis showed that the difference of mineral content in tea could be used to distinguish the tea in the south and north of China,and the distribution of tea in the South and North had certain rules.

关 键 词：茶叶 南北方 火焰原子吸收光谱法 矿质元素 主成分分析 

分 类 号：S571.1[农业科学—茶叶生产加工]