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LED-induced fluorescence system for tea classification and quality assessment

In English

Författare

  • Yongjiang Dong
  • Xuan Liu
  • Liang Mei
  • Chao Feng
  • Chunsheng Yan
  • Sailing He

Summary, in English

A fluorescence system was developed by using several light emitting diodes (LEDs) with different wavelengths as excitation light sources. The fluorescence sensor head consists of multi LED light sources and a multimode fiber for fluorescence collection, where the LEDs and the corresponding filters can be easily chosen to get appropriate excitation wavelengths for different applications. By analyzing fluorescence spectra with the principal component analysis method, the system was utilized in the classification of four types of green tea and two types of black tea beverages. Quality of Xihu Longjing tea leaves of different grades and that of the corresponding liquid tea samples were studied to further investigate the ability and application of the system in the evaluation of classification/quality of tea and other foods. (C) 2014 Elsevier Ltd. All rights reserved.

Avdelning/ar

Publiceringsår

2014

Språk

Engelska

Sidor

95-100

Publikation/Tidskrift/Serie

Journal of Food Engineering

Volym

137

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Atom and Molecular Physics and Optics

Nyckelord

  • LED
  • Fluorescence spectroscopy
  • Tea beverage
  • Tea
  • Classification
  • Quality

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0260-8774