| 茶叶中3类主要组分的近红外光谱分析作为茶叶质量的快速评定方法 |
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| 引用本文： | 徐立恒,吕进,林敏,孙耀国. 茶叶中3类主要组分的近红外光谱分析作为茶叶质量的快速评定方法[J]. 理化检验(化学分册), 2006, 42(5): 334-336 |
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| 作者姓名： | 徐立恒 吕进 林敏 孙耀国 |
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| 作者单位： | 中国计量学院,计量技术工程学院,杭州,310018 |
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| 基金项目： | 浙江省自然科学基金资助项目（No.202081） |
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| 摘 要： | 应用近红外光谱法测定了与茶叶品质密切相关的茶多酚、氨基酸及咖啡碱三类化合物。用PLS计算法建立了表示上述组分的二阶导数近红外光谱与其含量间关系的分析模型。根据相关分析模型计算所得的组分含量的结果与用国家标准方法测得的对应组分的含量达到一致。所提出的方法可作为评定茶叶品质的快速方法。
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| 关 键 词： | 近红外光谱法 PLS算法 茶多酚 氨基酸 咖啡碱 茶叶评定 |
| 文章编号： | 1001-4020（2006）05-0334-03 |
| 收稿时间： | 2005-03-01 |
| 修稿时间： | 2005-03-01 |
NIR SPECTROMETRIC ANALYSIS OF 3 KINDS OF MAIN COMPONENTS IN TEA AS A RAPID METHOD OF QUALIFICATION OF TEA |
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| XU Li-heng,LU Jin,LIN Min,SUN Yao-guo. NIR SPECTROMETRIC ANALYSIS OF 3 KINDS OF MAIN COMPONENTS IN TEA AS A RAPID METHOD OF QUALIFICATION OF TEA[J]. Physical Testing and Chemical Analysis Part B:Chemical Analgsis, 2006, 42(5): 334-336 |
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| Authors: | XU Li-heng LU Jin LIN Min SUN Yao-guo |
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| Affiliation: | College of Metrological Technique and Engineering, China Metrological University, Hangzhou 310018, China |
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| Abstract: | NIR spectrometry was applied to the determination of polyphenols, amino acids and caffeines in tea, the contents of which are closely related to the quality of tea. PLS algorithm was applied in the establishment of analytical models showing the relationships between the 2nd derivatives of NIR spectra with the contents of the respective components mentioned above. The results calculated by these analytical models were found to be in consistency with the values determined by the GB standard methods. The proposed method was proved to be feasible as a rapid method for qualification of tea. |
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| Keywords: | NIRS PLS algorithm Tea polyphenols Amino acids Caffeines Tea-qualification |
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