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[Rapid identification of cortex dictamni pieces and its counterfeit alangium Chinense by spectral imaging method]
Jing Zhao1, Qichang Pang, Ji Ma
1College of Science, South China Agricultural University, Guangzhou 510640, China.
Objective:
The spectral imaging method was used to quickly identify the Cortex Dictamni pieces and its counterfeit alangium Chinese, which is a potential method would be applied to control the quality of the Cortex Dictamni pieces.
Method:
Standard sample, 5 cortex dictamni samples and its counterfeit alangium Chinese of different sources were tested by the liquid crystal imaging instrument. The spectrum resolution was 5 nm, the spectral range was from 405 nm to 680 nm, and the spatial resolution was 50 lp x mm(-1). The characteristic spectrum curves were picked up from spectral cube and principal analysis method was used to analyze the results.
Result:
The identification results by the spectral imaging method accorded well with the results by the traditional biology and chemistry analysis method.
Conclusion:
The spectral imaging analysis method can be used to identify the cortex dictamni pieces and its counterfeit alangium Chinense. The testing course is convenient, quick and noninvasive.
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