| 绿茶矿质元素特征分析及产地判别研究 |
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| 引用本文： | 罗婷,赵镭,胡小松,汪厚银,廖小军,吴继红. 绿茶矿质元素特征分析及产地判别研究[J]. 食品科学, 2008, 29(11) |
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| 作者姓名： | 罗婷 赵镭 胡小松 汪厚银 廖小军 吴继红 |
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| 作者单位： | 中国农业大学食品科学与营养工程学院，中国标准化研究院 |
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| 摘 要： | 本实验采用湿法消解结合ICP-AES法对来自不同产地的28种绿茶中的K、Ca、Mg、Fe、Zn、Cu等9种元素进行了分析测定,结合主成分分析及聚类分析模式识别方法进行茶叶产地的分类。结果表明,采用该方法对不同产地绿茶能够良好地区分,聚类效果明显。本法简便、准确,对茶叶产地判别以及标准化工作具有重要意义。
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| 关 键 词： | 绿茶 ICP-AES 矿质元素 聚类分析 主成分分析 |
Study on Characteristic Analysis of Mineral Elements in Green Tea and Discrimination Based on Origin |
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| LUO Ting,ZHAO Lei,HU Xiao-song,WANG Hou-yin,LIAO Xiao-jun,WU Ji-hong. Study on Characteristic Analysis of Mineral Elements in Green Tea and Discrimination Based on Origin[J]. Food Science, 2008, 29(11) |
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| Authors: | LUO Ting ZHAO Lei HU Xiao-song WANG Hou-yin LIAO Xiao-jun WU Ji-hong |
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| Abstract: | The contents of nine mineral elements(K,Ca,Mg,Fe,Zn and Cu etc) in twenty-eight green tea samples from different areas of China were analyzed by ICP-AES after digestion.Then pattern recognition techniques including principal component analysis(PCA) and cluster analysis(CA) were applied to differentiate the geographical origins of these tea.The classification performance reveals fair,and the green tea samples could be classified clearly.This method is convenient and proper,which has great significance for the origin discrimination and standardization of tea. |
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| Keywords: | green tea ICP-AES mineral elements CA PCA |
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