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《Journal of Anhui Agricultural Sciences》 2007-14
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Application of Near Infrared Reflectance Spectroscopy in Identification of Different Classified Tea

CAI Jian-rong et al(School of Food & Biological Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013)  
With 4 kinds of famous tea of Longjing,Biluochun,Qi and Tieguanyin as test materials,the feasibility of identification and classify of tea was studied by using near infrared reflectance spectroscopy coupled with pattern recognition based on KNN.It was found that in the spectra range between 6 500 cm-1 and 5 300 cm-1,the models of tea variety identification were built separately with KNN pattern recognition method after the pretreatment by standard normal variate transformation(SNV).Results showed that the KNN identification models were optimal when 4 principal components factors were used in building models,with the identification being all 100 % in samples of training set and forecast set.This conclusion offered a new idea for the quick and precise identification of tea.
【Fund】: 江苏省自然科学基金重点资助项目(BK2006707-1);; 江苏省高校研究生科技创新计划
【CateGory Index】: S571.1
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Chinese Journal Full-text Database 1 Hits
1 ZHANG Zheng-zhu,LIAO Bu-yan,YAN Shou-he,WAN Xiao-chun(Key Laboratory of Tea Biochemistry & Biotechnology,Ministry of Education and Ministry of Agriculture,Anhui Agricultural University,Hefei 230036,China);Application prospect of near infrared spectroscopic techniques on the fidelity evaluation of tea quality[J];Science and Technology of Food Industry;2009-09
Chinese Journal Full-text Database 10 Hits
1 HAN Liping,XU Hairong,NI Jun(Department of Tea Science,Zhejiang University,Hangzhou 310029);Near-infared spectroscopy technique and its applications in tea research[J];Journal of Tea;2007-01
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5 Lu Yongjun~1,3 , Chen Huacai~1,2 , Lü Jin2, Chen Xingdan1 ~ 1(State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130022) ~ 2(China Institute of Metrology, Hangzhou 310018) ~ 3(The Institute of Opotoelectronics of Dalian Nationalities, Dalian 116600);Near Infrared Determination of Catechin in Tea Polyphenol[J];Chinese Journal of Analytical Chemistry;2005-06
6 Cheng Biao, Chen Dezhao, Wu Xiaohua (Department of Chemical Engineering, Zhejiang University, Hangzhou 310027);Near Infrared Spectral Wavelength Selection Based on Moving Window-Iterative Genetic Algorithm Method[J];Chinese Journal of Analytical Chemistry;2006-S1
7 WANG Kang, SHEN Rong-kai, TANG You-sheng (Department of irrigation and drainage, Wuhan University,Wuhan 430072, China);Evaluating Nitrogen Status with Chlorophyll Meter in Summer Corn[J];Irrigation and Drainage;2002-04
8 WANG Jia-Jun (Technology Center,Honghe Cigarette Factory,Mile,Yunnan 652300,P.R. China);Determination of Total-Nitrogen,Total-Sugar and Nicotine in Tobacco by FT-NIR Spectrometry[J];Chinese Journal of Spectroscopy Laboratory;2003-02
9 SUN Yao Guo a LIN Min b LV Jin a,b XU Li Heng b a(College of Optics and Electronic Information Engineering,University of Shanghai for Science and Technology, ShangHai 200093,P.R.China) b(College of Metrology Technology Engineering China Jiliand University,Hangzhou 310008,P.R.China);Determination of the Contents of Free Amino Acids,Caffeine and Tea Polyphenols in Green Tea by Fourier Transform Near-Infrared Spectroscopy[J];Chinese Journal of Spectroscopy Laboratory;2004-05
10 LUO Yi-fan~(1, 2), GUO Zhen-fei~3, ZHU Zhen-yu~4, WANG Chuan-pi~1, JIANG He-yuan~1, HAN Bao-yu~(1*)1. Key Laboratory of Tea Chemical Engineering of Ministry of Agriculture, Hangzhou 310008, China2. College of Chemistry and Environment, South China Normal University, Guangzhou 510631, China3. College of Biotechnology, South China Agricultural University, Guangzhou 510624, China4. Basic Medical College of Zhongshan University, Guangzhou 510089, China;Studies on ANN Models of Determination of Tea Polyphenol and Amylose in Tea by Near-Infrared Spectroscopy[J];Spectroscopy and Spectral Analysis;2005-08
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