Three-dimensional fluorescent spectrum identification method for Ningxia wolfberry

Abstract

The invention relates to a three-dimensional fluorescent spectrum identification method for Ningxia wolfberry. The identification method is characterized by comprising the following steps: 1) acquiring a correction set, namely selecting at least 10 dry wolfberry fruit samples produced in Ningxia and at least 10 dry wolfberry fruit samples produced in other places as a correction sample set, heating and drying all the correction samples, then cooling to room temperature, then pulverizing into powder by virtue of a pulverizing machine, sequentially acquiring three-dimensional fluorescent spectrum images of the wolfberry powder sample produced in Ningxia and the wolfberry powder sample produced in other places as a correction set for the wolfberrys produced in Ningxia and the wolfberrys produced in other places by adopting a fluorescent spectrometer with a three-dimensional fluorescent spectrum scanning function and a solid sample test accessory. Compared with the prior art, the analysis method provided by the invention is easy, rapid and reliable.

Description

technical field [0001] The invention relates to a three-dimensional fluorescence spectrum identification method of Ningxia wolfberry. Background technique [0002] The main planting areas of wolfberry in my country are Ningxia, Gansu, Xinjiang, Qinghai, Inner Mongolia and Hebei, etc. Due to the influence of factors such as ecological environment and climate, there are differences in the content of nutrition and active ingredients of wolfberry from different origins, so the quality and efficacy are also different. has a difference. The most authentic and famous one is Ningxia wolfberry. The market demand of Ningxia wolfberry is very large, but the source is confusing and the authenticity is difficult to distinguish. In the wolfberry trade, there are often cases of mixing and counterfeiting wolfberries from other origins, which not only disrupts the normal market order, but also damages the interests of consumers. Therefore, it is necessary to compare and identify the quality...

AI Technical Summary

Problems solved by technology

[0003] The existing domestic researches mainly analyze the physical and chemical indicators, nutrition and active components of wolfberry, and study the quality difference of wolfberry from different origins to realize the identification of origin. The process involves complicated sample processing and the joint application of various analytical instruments, long analysis cycle and instrument configuration cost. High and unsuitable for popularization and application

The simple and convenient molecular spectroscopy technology combined with chemometric methods is suitable for quantitative and qualitative analysis of multi-component complex samples based on the overall spectral information analysis. In recent years, it has been widely used in the qualitative identification of Chinese herbal medicines, such as mid-infrared / near-infrared Spectrum has been used to identify the origin and variety of wolfberry, but fluorescence spectroscopy, especially three-dimensional fluorescence spectroscopy, has no application examples of wolfberry identification

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