The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

LED-induced fluorescence system for tea classification and quality assessment

På svenska

Author

  • 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.

Department/s

Publishing year

2014

Language

English

Pages

95-100

Publication/Series

Journal of Food Engineering

Volume

137

Document type

Journal article

Publisher

Elsevier

Topic

  • Atom and Molecular Physics and Optics

Keywords

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

Status

Published

ISBN/ISSN/Other

  • ISSN: 0260-8774