Method for quantitative analysis of ternary adulterated pseudo-ginseng based on integrating sphere diffuse reflection UV-visible spectroscopy

A quantitative analysis and diffuse reflectance technology, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems that the quantitative analysis of complex traditional Chinese medicine systems cannot be realized, and it is difficult to find target analytes, so as to achieve fast analysis speed and save tedious steps. Effect

Inactive Publication Date: 2018-02-23
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0005] For the UV-Vis spectrum of traditional Chinese medicine, due to the large number of components, it is difficult to find the characteristic peaks of the target analyte, so the traditional one-element calibration model cannot realize the quantitative analysis of the complex traditional Chinese medicine system

Method used

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  • Method for quantitative analysis of ternary adulterated pseudo-ginseng based on integrating sphere diffuse reflection UV-visible spectroscopy
  • Method for quantitative analysis of ternary adulterated pseudo-ginseng based on integrating sphere diffuse reflection UV-visible spectroscopy
  • Method for quantitative analysis of ternary adulterated pseudo-ginseng based on integrating sphere diffuse reflection UV-visible spectroscopy

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Experimental program
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Embodiment 1

[0033] This embodiment is applied to the diffuse reflection ultraviolet-visible spectroscopic analysis of the integrating sphere, and quantitatively analyzes the percentage content of each component in the three-component adulterated Panax notoginseng sample of Panax notoginseng, curcuma, and turmeric. The specific steps are as follows:

[0034] 1) Preparation of Sanqi, Curcuma, and Turmeric Triple-adulterated Sanqi Samples

[0035] 24 kinds of samples of Sanqi, 26 kinds of curcuma and 28 kinds of turmeric were purchased from 14 pharmacies in Tianjin, including Tongbaitang, Beijing Tongrentang Tianjin Pharmacy, Huili and Dapharmacy, and the Sanqi and these two medicinal materials were mixed according to a certain mass percentage Sixty-six samples of three-component adulterated Panax notoginseng were prepared. The mass percent range of each medicinal material in all adulterated samples ranged from 0 to 100%.

[0036] 2) Collect the UV-Vis spectrum of the sample

[0037] The ...

Embodiment 2

[0054] This embodiment is applied to the diffuse reflectance ultraviolet-visible spectroscopic analysis of the integrating sphere, and quantitatively analyzes the percentage content of each component in the three-component adulterated notoginseng sample of notoginseng, curcuma, and galangal. The specific steps are as follows:

[0055] 1) Preparation of ternary adulterated Panax notoginseng samples

[0056] A number of Panax notoginseng, curcuma and galangal were purchased from different Chinese medicine stores, and Sanqi and these two medicinal materials were prepared according to a certain mass percentage to prepare several samples of three-component adulterated Panax notoginseng. The concentration range of each medicinal material in all the adulterated samples was 0-100%, and a total of 66 three-component adulterated Panax notoginseng samples were prepared.

[0057] 2) Collect the UV-Vis spectrum of the sample

[0058] The spectra of all samples were measured using an inte...

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Abstract

The invention relates to a method for quantitative analysis of ternary adulterated pseudo-ginseng based on integrating sphere diffuse reflection UV-visible spectroscopy. The method comprises scanninga ternary adulterated pseudo-ginseng sample through an integrating sphere diffuse reflection UV-visible spectrophotometer, dividing a data set into a training set and a prediction set, inspecting pretreatment effects of centralization, scaling, maximum/minimum normalization, standardization, standard normal variation, multiplicative scatter correction, first-order derivation, second-order derivation, continuous wavelet transform and SG smoothing, selecting an optimal pretreatment method, processing a spectrum through the optimal pretreatment method, building a least squares model and forecasting an unknown sample. Through use of integrating sphere diffuse reflection, sample pretreatment is avoided and non-destructive direct measurement of the sample is realized. The UV-visible spectroscopydetection is fast. The spectrum is processed by stoichiometry and a model is built by stoichiometry so that prediction accuracy is high. The method is suitable for quantitative analysis of ternary adulterated pseudo-ginseng.

Description

technical field [0001] The invention belongs to the technical field of detection of traditional Chinese medicinal materials, and in particular relates to a quantitative analysis method for three-element adulterated Panax notoginseng based on the diffuse reflection ultraviolet-visible spectrum of an integrating sphere. Background technique [0002] The Chinese herbal medicine Panax notoginseng is the dried root of the Araliaceae plant Panax notoginseng, because it has the effects of dispelling blood stasis, stopping bleeding, reducing swelling and relieving pain, it is a commonly used rare and precious traditional Chinese medicine. Due to the large market demand and high price of Panax notoginseng, there are many adulterated or counterfeit products with similar appearance and color to Panax notoginseng in the market, which seriously affects the safety of medication. Therefore, it is of great significance to discuss the identification and quantitative analysis of adulterated p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 卞希慧张文文陆占魁严家陈王少彬
Owner TIANJIN POLYTECHNIC UNIV
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