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SER rapid detection method for patent blue V in beverage

A detection method and beverage technology, applied in the rapid screening of surface-enhanced Raman spectroscopy of beverage patent blue V, and the field of rapid screening of pigments in three beverages, can solve problems that need further improvement, analysis and detection, and achieve sample Simple pre-processing and the effect of improving sensitivity

Inactive Publication Date: 2018-05-15
江西省检验检疫科学技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method disclosed above can achieve the purpose of rapid detection and screening of colorants in food through SERS technology, but it does not analyze and detect the same analyte in different analysis objects. For the Raman detection conditions of colorants in beverages and Its sensitivity needs to be further improved

Method used

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  • SER rapid detection method for patent blue V in beverage
  • SER rapid detection method for patent blue V in beverage
  • SER rapid detection method for patent blue V in beverage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Rapid detection of patent blue V in Gatorade sports drinks by surface-enhanced Raman spectroscopy

[0035] (1) Preparation of gold nano-reinforced substrate: The gold nano-reinforced substrate was prepared by heating and reducing trisodium citrate. Put the three-necked bottle in an intelligent constant temperature magnetic stirrer, add a certain amount of a certain concentration of chloroauric acid solution to the three-necked bottle, heat it quickly to boiling (stir while heating), and quickly add a certain amount of IP 6 As a protective agent, add 1 mL of trisodium citrate solution, at this time the solution turns dark red to wine red, and continue to keep stirring and continue heating for 15 min; after cooling at room temperature, store in the dark; Appropriate purification treatment.

[0036] (2) Select a Raman spectrometer with an excitation light source wavelength of 785nm, a power of 300mW, and a spectral scanning range of 100-4278cm -1 , with a resolu...

Embodiment 2

[0047] Example 2: Rapid detection of patent blue V by surface-enhanced Raman spectroscopy in compound juice beverages

[0048] (1) Preparation of gold nano-reinforced substrate: The gold nano-reinforced substrate was prepared by heating and reducing trisodium citrate. Put the three-necked bottle in an intelligent constant temperature magnetic stirrer, add a certain amount of a certain concentration of chloroauric acid solution to the three-necked bottle, heat it quickly to boiling (stir while heating), and quickly add a certain amount of IP 6 As a protective agent, add 1 mL of trisodium citrate solution, at this time the solution turns dark red to wine red, and continue to keep stirring and continue heating for 15 min; after cooling at room temperature, store in the dark; Appropriate purification treatment.

[0049] (2) Select a Raman spectrometer with an excitation light source wavelength of 785nm, a power of 300mW, and a spectral scanning range of 100-4278cm -1 , with a re...

Embodiment 3

[0060] Example 3: Rapid detection of patent blue V in RIO cocktail blended beverage by surface-enhanced Raman spectroscopy

[0061] (1) Preparation of gold nano-reinforced substrate: The gold nano-reinforced substrate was prepared by heating and reducing trisodium citrate. Put the three-necked bottle in an intelligent constant temperature magnetic stirrer, add a certain amount of a certain concentration of chloroauric acid solution to the three-necked bottle, heat it quickly to boiling (stir while heating), and quickly add a certain amount of IP 6 As a protective agent, add 1 mL of trisodium citrate solution, at this time the solution turns dark red to wine red, and continue to keep stirring and continue heating for 15 min; after cooling at room temperature, store in the dark; Appropriate purification treatment.

[0062] (2) Select a Raman spectrometer with an excitation light source wavelength of 785nm, a power of 300mW, and a spectral scanning range of 100-4278cm -1 , with...

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Abstract

The invention relates to an SER rapid detection method for patent blue V in beverage. The SER rapid detection method comprises the following steps: (1) preparing a gold nano reinforced substrate; (2)screening electrolyte; (3) producing a Raman spectrum peak standard line; (4) removing impurities of the beverage; (5) taking a plurality of commercial beverages free from a substance to be detected as a blank sample, removing volatiles in step (4), extracting, and separately preparing a coloring agent solution with the gradient concentration of a blank beverage matrix; uniformly mixing 50 micro liters of a solution to be detected, 500 micro liters of gold sol substrate prepared in step (1) and 100 micro liters of electrolyte solution obtained in step (2), and performing the Raman spectrum detection; (6) qualitatively analyzing pigments in a beverage test sample; and (7) half-quantitatively analyzing the pigments in the beverage test sample. According to the SER rapid detection method forthe patent blue V in the beverage, the pretreatment of a sample is simple and fast, a single sample can be detected only in about 10 minutes, the coloring agent in the beverage test sample can be rapidly, accurately, qualitatively and quantitatively analyzed, and the SER rapid detection method can be used for rapidly screening and detecting a great amount of samples on site.

Description

technical field [0001] The invention relates to the field of fast screening methods for pigments of three kinds of beverages, in particular to a fast screening method for surface-enhanced Raman spectroscopy of beverage patent blue V, and belongs to the technical field of fast detection of food colorants. Background technique [0002] Food additives are mostly chemical synthesis products. my country has relevant regulations on the scope of use of food coloring agents and the maximum allowable addition amount. Excessive ingestion will cause adverse effects on human health. In order to pursue short-term profits, some unscrupulous merchants use cheap chemical raw materials as pigments to add to food, or use them in excessive doses. These illegal acts seriously violate my country's market access system. In recent years, food safety incidents involving illegal abuse or excessive use of coloring agents have occurred frequently, such as "Sudan red duck eggs", "dyed cakes", "dyed ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658G01N21/65G01N2021/655
Inventor 张书敏江龙发耿响郭平
Owner 江西省检验检疫科学技术研究院
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