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,对安徽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%。
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, Anhui, China are detected. Results show that there are strong Raman peaks at 748, 831, 1005, 1158, 1328, 1527, 1609 cm-1 in the original leaves from different regions, but the intensities 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%.
作者
陈长水
师星哲
李谦
刘兆伟
CHEN Changshui Sill Xingzhe LI Qian LIU Zhaowei(School of Information and Optoelectronic Science and Engineering, South China Normal University Guangzhou 510006, China)
出处
《量子电子学报》
CSCD
北大核心
2017年第5期513-517,共5页
Chinese Journal of Quantum Electronics
基金
广东省自然科学基金
2015A030313383
广东省科技攻关项目
2014A010103023
广州市科技计划
2014J4100028~~
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
spectroscopy
laser Raman spectroscopy
principal component analysis
linear discriminantanalysis
fresh tea leaves of Zhuye
