Evaluation of tea quality by two-dimensional fluorescence correlation spectroscopy

Hao Lu; Yongjiang Dong; Chunsheng Yan

doi:10.1117/12.2082905

19 February 2015 Evaluation of tea quality by two-dimensional fluorescence correlation spectroscopy

Hao Lu, Yongjiang Dong, Chunsheng Yan

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94490Z (2015) https://doi.org/10.1117/12.2082905
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

In this paper, light-emitting diode (LED) based two-dimensional fluorescence correlation spectroscopy was used to discriminate tea leaves with different grades. The distance between LED and tea samples was changed as an external variable. As the fluorescence spectral data collected through the experiment was large, principal component regression (PCR) was used to extract the important information and analyze the spectral data. The final two-dimensional fluorescence correlation spectra contour maps showed obvious difference between different tea leaves and the predictive results based on the leave-one-out method. It showed the strong ability of this spectral method for tea classification.

Citation Download Citation

Hao Lu, Yongjiang Dong, and Chunsheng Yan "Evaluation of tea quality by two-dimensional fluorescence correlation spectroscopy", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94490Z (19 February 2015); https://doi.org/10.1117/12.2082905

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