Fast two-dimensional fluorescence correlation spectroscopy technique for tea quality detection

Yongjiang Dong, Hao Lu, Zhengdong Yong, Chunsheng Yan, Sailing He
2015 Applied Optics  
A fast two-dimensional fluorescence correlation spectroscopy technique based on light emitting diodes is developed, which uses light intensity and excitation wavelength as quickly changeable and easily controllable external perturbations. A compact and automatic system is set up to detect tea quality. A partial least square regression method is used to create predictive models for tea grades. Compared to the traditional fluorescence spectroscopy method, this convenient two-dimensional
more » ... n spectroscopy technique is more accurate according to our experimental results and is promising for practical applications.
doi:10.1364/ao.54.007032 pmid:26368372 fatcat:5e6w6rxskfhxriowditzs2ogiq