1. School of Science, Jiangnan University, Wuxi 214122, China 2. School of Internet of Things, Jiangnan University, Wuxi 214122, China 3. Shanghai TCM-Integrated Hospital, Shanghai 200082, China 4. Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Wuxi 214122, China
Abstract：Three-dimensional synchronous fluorescence spectrum of prepared rehmannia root from different regions were measured and feature parameters were extracted. It can be found that the effective fluorescent compositions of prepared rehmannia root from different regions are similar. The relationships between the spectrum-effect were established. This study can provide reference for clinicaldosage. First order derivative and second order derivative of prepared rehmanniaroot from different regions can be got by programming respectively. Magnifing synchronous emission spectrum of the shoulder strap, the subtle differences of the spectrum can be distinguished and the method, derivative synchronous fluorescence spectrum, to identify different regions of prepared rehmannia root are acquired.
Key words：Three-dimensional synchronous fluorescence spectrum;First order derivative;Second order derivative;Prepared rehmannia root
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