Infrared Spectrum Analysis and Identification Method of Cordyceps Sinensis
A technology of infrared spectrum analysis and Cordyceps sinensis, which is applied in the direction of material analysis, analysis materials, and measuring devices through optical means, can solve the problem of the indistinguishable authenticity of Cordyceps sinensis worms, and achieve rapid testing, fast analysis methods, and accurate results Effect
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Embodiment 1
[0056] Example 1 The standard spectrum drawing of Cordyceps sinensis insects, the collection of essential characteristic peaks of the infrared spectrum of Cordyceps sinensis insects and the collection of common characteristic peaks of the infrared spectrum of Cordyceps sinensis insects and the determination of the lower threshold of the correlation coefficient
[0057] 1) Sample source and processing
[0058] Select 15 samples of Cordyceps sinensis from Yushu Prefecture in Qinghai, 15 from Guoluo Prefecture, 15 from Hainan Prefecture, 15 from Tibet, 15 from Sichuan, and 8 from Gansu. Samples of uniform size were selected for each origin.
[0059] The sample processing refers to the relevant regulations of the Pharmacopoeia of the People's Republic of China. The insect body part of the sample is naturally dried and crushed, and the fine powder after the 200-mesh sieve is used for the infrared spectrum test.
[0060] 2) Infrared spectroscopy instrument
[0061] In the present invention, a...
Embodiment 2
[0082] Example 2 Identification of Cordyceps Gunis and Cordyceps Sinensis
[0083] 1) Sample source and processing
[0084] The commercially available Cordyceps are numbered G1, G2, G3, G4.
[0085] The sample processing refers to the relevant regulations of the Pharmacopoeia of the People's Republic of China. The insect body part of the sample is naturally dried and crushed, and the fine powder after the 200-mesh sieve is used for the infrared spectrum test.
[0086] 2) Infrared spectroscopy instrument
[0087] All samples were tested using SpectrumOne Fourier Transform Infrared Spectrometer from PerkinElmer, USA.
[0088] Sample test parameters: Spectral scanning range 4000~400cm -1 , Spectral resolution 4cm -1 , Each spectrum is scanned 16 times cumulatively, and the interference of carbon dioxide and water vapor is deducted in real time.
[0089] 3) Infrared spectrum test method
[0090] The sample is tested using potassium bromide (KBr) tablet method. Take 1-2 mg of sample powder and...
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