Method for quantitative analysis of multicomponent-adulterated pseudo-ginseng based on near infrared spectroscopy

A technology of near-infrared spectroscopy and near-infrared spectrometer, which is applied in the field of quantitative analysis of multivariate doped Panax notoginseng based on near-infrared spectroscopy

Inactive Publication Date: 2018-02-23
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the research on the adulteration of the traditional Chinese medicine Panax notoginseng, there are patents to identify the authenticity of Panax notoginseng (Xie Shaopeng, Yang Tianjun, Yang Jie, A rapid

Method used

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  • Method for quantitative analysis of multicomponent-adulterated pseudo-ginseng based on near infrared spectroscopy
  • Method for quantitative analysis of multicomponent-adulterated pseudo-ginseng based on near infrared spectroscopy
  • Method for quantitative analysis of multicomponent-adulterated pseudo-ginseng based on near infrared spectroscopy

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This example is applied to the quantitative analysis of the binary adulterated samples of Panax notoginseng and Curcuma. The specific steps are as follows:

[0033] 1) Prepare the experimental samples and collect the near-infrared spectra of the samples

[0034] Prepare curcuma and three grades of high-grade, medium-grade and low-grade notoginseng, respectively grind the dried medicinal materials, pass through a 120-mesh sieve, and store them in a desiccator for later use. The concentration range of notoginseng and curcuma is designed to be 0%-100%, the main interval is 5%, and 3 samples are prepared for each concentration ratio, and the notoginseng used in the three samples are randomly numbered from high, medium and low grades respectively Panax notoginseng preparation, a total of 75 samples were prepared. According to the mass percentage designed for each sample, use an analytical balance to weigh, record the actual mass of each component, and then calculate the ac...

Embodiment 2

[0045] This example is applied to the quantitative analysis of three-component adulterated samples of Panax notoginseng, curcuma and turmeric. The specific steps are as follows:

[0046] 1) Prepare the experimental samples and collect the near-infrared spectra of the samples

[0047] Prepare curcuma, turmeric, and three grades of high, medium, and low-grade notoginseng, grind the dried medicinal materials, pass through a 120-mesh sieve, and store them in a desiccator for later use. The concentration range of notoginseng, curcuma and turmeric is designed to be 0%-100%, and the main interval is 5%. Three samples are prepared for each concentration ratio. Randomly numbered Panax notoginseng was prepared, and a total of 66 samples were prepared. According to the mass percentage designed for each sample, use an analytical balance to weigh, record the actual mass of each component, and then calculate the actual mass percentage of each component. Set the near-infrared spectrum sam...

Embodiment 3

[0060] This example is applied to the quantitative analysis of four-component adulterated samples of Panax notoginseng, Zezhu, curcuma longa, and Galangal. The specific steps are as follows:

[0061] 1) Prepare the experimental samples and collect the near-infrared spectra of the samples

[0062] Prepare curcuma, turmeric, galangal, and three grades of high, medium, and low-grade notoginseng, grind them separately, pass through a 120-mesh sieve, and store them in a desiccator for later use. Design the data set for the adulteration of Panax notoginseng, Curcuma longa and Galangal. In the data design, first determine the mass percentage and concentration interval of Panax notoginseng. The mass percentage of Panax notoginseng is 100-0%, and the main interval is 5%. The mass percent of each component. For the sum of the percentages of all samples of the four components, subtract the sum of the percentages of all samples of the notoginseng component, and the remaining part is equ...

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Abstract

The invention relates to a method for quantitative analysis of multicomponent-adulterated pseudo-ginseng based on near infrared spectroscopy. The method comprises scanning an adulterated sample through a near infrared spectrometer to obtain a near infrared spectrum, respectively inspecting prediction accuracy and operation efficiency of principal component regression (PCR), support vector regression (SVR), partial least squares regression (PLSR), artificial neural network (ANN) and extreme learning machine (ELM) models, building an optimal modeling method and carrying out prediction on the content of the unknown sample through the optimal model. The method adopts a near infrared spectroscopy technology, is environmentally friendly and nondestructive and realizes fast detection. Through multiple multicomponent correction technologies and use of the optimal method, high accuracy is obtained. The method is suitable for quantitative adulteration of multicomponent-adulterated pseudo-ginseng.

Description

technical field [0001] The invention belongs to the field of analysis and detection of traditional Chinese medicinal materials, and in particular relates to a quantitative analysis method for multi-element adulterated Panax notoginseng based on near-infrared spectroscopy. Background technique [0002] As a precious Chinese medicinal material, Panax notoginseng has a huge market demand because of its functions of promoting blood circulation and removing blood stasis, reducing swelling and relieving pain, clearing away heat and detoxification, anti-aging and oxidation, and improving the body's immunity. Due to the shortage of Panax notoginseng resources and the price keeps soaring, counterfeit products that are very similar in appearance and color to Panax notoginseng often appear on the market, such as curcuma, turmeric, and galangal. Although these counterfeit products are similar to Sanqi in appearance, their medicinal properties and functions are quite different. The adult...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3563
CPCG01N21/359G01N21/3563G01N2201/129G01N2201/1296
Inventor 刘鹏罗弘思卞希慧王文强谭小耀
Owner TIANJIN POLYTECHNIC UNIV
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