量子电子学报

• 光谱 •    下一篇

槠叶种新鲜茶树叶的拉曼光谱检测

陈长水, 师星哲, 李 谦, 刘兆伟   

  1. 华南师范大学信息光电子科技学院,广东 广州 510006
  • 出版日期:2017-09-28 发布日期:2019-06-13
  • 作者简介:陈长水(1969—),安徽青阳人,博士,教授,博士生导师,主要从事拉曼光谱研究,非线性光学和黑硅光电探测器方面的研究。E-mail: cschen@aiofm.ac.cn
  • 基金资助:
    Supported by National Natural Science Foundation of Guangdong Province(广东省自然科学基金,2015A030313383),Science and Technology Program of Guangzhou City(广州市科技计划,2014J4100028), Key Science and Technology Program of Guangdong Province(广东省科技攻关项目,2014A010103023)

Detection of fresh tea leaves of Zhuye by Raman spectroscopy

CHEN Changshui, SHI Xingzhe, LI Qian, LIU Zhaowei   

  1. School of Information and Optoelectronic Science and Engineering, South China Normal University,Guangzhou 510006, China
  • Published:2017-09-28 Online:2019-06-13

摘要: 基于激光拉曼光谱技术对新鲜茶叶原叶品质鉴定及产地区分进行了研究,对祁门县六个村庄槠叶种新鲜茶树叶(简称原叶)进行了检测。结果表明不同产地原叶在748,831,1005,1158,1328,1527,1609 cm-1等处均有较强拉曼峰,但每组峰强度存在差异。采用主成分分析法(PCA)及线性判别分析法(LDA)对原叶的拉曼光谱进行了分析,得到不同产地原叶的区分度为70.7%。

关键词: 光谱学, 激光拉曼光谱, 主成分分析, 线性判别分析, 槠叶种新鲜茶树叶

Abstract: Based on laser Raman spectroscopy technology, the quality identification of fresh tea leaves and growing region discrimination are investigated. Fresh leaves of Zhuye (the original leaves) of six villages in Qimen County are detected. Results show that there are strong Raman peaks at 748,831,1005,1158,1328,1527,1609 cm in the original leaves from different regions, but the intensity of peaks are different in each group.Principal component analysis (PCA) and linear discriminant analysis (LDA) are used to analyze Raman spectra of the original leaves, and it’s found that the discrimination index of original leaves from different regions is 70.7%.

Key words: spectroscopy, laser Raman spectroscopy, principal component analysis, linear discriminant analysis, fresh tea leaves of Zhuye