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Tea classification and quality assessment using laser-induced fluorescence and chemometric evaluation

Mei, Liang LU ; Lundin, Patrik LU ; Brydegaard, Mikkel LU ; Gong, Shuying; Tang, Desong; Somesfalean, Gabriel LU ; He, Sailing and Svanberg, Sune LU (2012) In Applied Optics 51(7). p.803-811
Abstract
Laser-induced fluorescence was used to evaluate the classification and quality of Chinese oolong teas and jasmine teas. The fluorescence of four different types of Chinese oolong teas-Guangdong oolong, North Fujian oolong, South Fujian oolong, and Taiwan oolong was recorded and singular value decomposition was used to describe the autofluoresence of the tea samples. Linear discriminant analysis was used to train a predictive chemometric model and a leave-one-out methodology was used to classify the types and evaluate the quality of the tea samples. The predicted classification of the oolong teas and the grade of the jasmine teas were estimated using this method. The agreement between the grades evaluated by the tea experts and by the... (More)
Laser-induced fluorescence was used to evaluate the classification and quality of Chinese oolong teas and jasmine teas. The fluorescence of four different types of Chinese oolong teas-Guangdong oolong, North Fujian oolong, South Fujian oolong, and Taiwan oolong was recorded and singular value decomposition was used to describe the autofluoresence of the tea samples. Linear discriminant analysis was used to train a predictive chemometric model and a leave-one-out methodology was used to classify the types and evaluate the quality of the tea samples. The predicted classification of the oolong teas and the grade of the jasmine teas were estimated using this method. The agreement between the grades evaluated by the tea experts and by the chemometric model shows the potential of this technique to be used for practical assessment of tea grades. (C) 2012 Optical Society of America (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
51
issue
7
pages
803 - 811
publisher
OSA
external identifiers
  • wos:000301190000032
  • scopus:84857802800
ISSN
2155-3165
DOI
10.1364/AO.51.000803
language
English
LU publication?
yes
id
810a6043-e6de-422f-8edd-d356870ffd1d (old id 2515597)
date added to LUP
2012-05-09 14:24:04
date last changed
2017-10-22 03:00:54
@article{810a6043-e6de-422f-8edd-d356870ffd1d,
  abstract     = {Laser-induced fluorescence was used to evaluate the classification and quality of Chinese oolong teas and jasmine teas. The fluorescence of four different types of Chinese oolong teas-Guangdong oolong, North Fujian oolong, South Fujian oolong, and Taiwan oolong was recorded and singular value decomposition was used to describe the autofluoresence of the tea samples. Linear discriminant analysis was used to train a predictive chemometric model and a leave-one-out methodology was used to classify the types and evaluate the quality of the tea samples. The predicted classification of the oolong teas and the grade of the jasmine teas were estimated using this method. The agreement between the grades evaluated by the tea experts and by the chemometric model shows the potential of this technique to be used for practical assessment of tea grades. (C) 2012 Optical Society of America},
  author       = {Mei, Liang and Lundin, Patrik and Brydegaard, Mikkel and Gong, Shuying and Tang, Desong and Somesfalean, Gabriel and He, Sailing and Svanberg, Sune},
  issn         = {2155-3165},
  language     = {eng},
  number       = {7},
  pages        = {803--811},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Tea classification and quality assessment using laser-induced fluorescence and chemometric evaluation},
  url          = {http://dx.doi.org/10.1364/AO.51.000803},
  volume       = {51},
  year         = {2012},
}