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Organic acid small molecule based on aminophenol-Ag < + >/Cu < 2 + >, white spirit identification method and visual sensing array

A technology of aminophenol and organic acid, which is applied in the field of organic matter identification and bionic sensors, can solve problems such as undiscovered, and achieve the effect of low cost and easy availability of raw materials

Pending Publication Date: 2022-08-09
LUZHOU PINCHUANG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aminophenol has a certain reducibility and can undergo redox reactions with certain metal ions, but there is no research on the use of redox reactions between aminophenols and metal ions for the detection of flavor compounds in liquor

Method used

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  • Organic acid small molecule based on aminophenol-Ag &lt; + &gt;/Cu &lt; 2 + &gt;, white spirit identification method and visual sensing array
  • Organic acid small molecule based on aminophenol-Ag &lt; + &gt;/Cu &lt; 2 + &gt;, white spirit identification method and visual sensing array
  • Organic acid small molecule based on aminophenol-Ag &lt; + &gt;/Cu &lt; 2 + &gt;, white spirit identification method and visual sensing array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The four-channel visual array sensor constructed in this example can be used to distinguish 9 kinds of organic acid compounds. It should be noted that the first sensing unit (S1) identification system A is: OAP (50mmol / L)+Ag + (25mmol / L); the second sensing unit (S2) identification system B is: OAP (50mmol / L)+Cu 2+ (25mmol / L), the third sensing unit (S3) identification system C is: PAP (50mmol / L)+Ag + (25mmol / L); the second sensing unit (S4) identification system D is: PAP (50mmol / L)+Cu 2+ (25mmol / L).

[0074] In this example, 4-aminophenol and 2-aminophenol were prepared into initial solutions of 150 mmol / L, respectively, to ensure that when 30 μL of the aforementioned solutions were added to the identification system, the 4-aminophenol, 2-aminophenol and 2-aminophenol in the system were The final concentration of phenol is 50 mmol / L; silver nitrate and copper nitrate are respectively prepared into initial solutions of 75 mmol / L to ensure that when 30 μL of the afor...

Embodiment 2

[0086] The four-channel fluorescence array sensor constructed in this example can also realize the identification of different mixed organic acid samples on the basis of identifying the pure substances of the above 8 organic acid compounds.

[0087] The operation of this example is the same except that the pure organic acid compound solutions of different concentrations in each channel are replaced with the organic acid mixed samples (final concentration) shown in Table 2.

[0088] Likewise, all data were repeated 6 times, their visual color differences were recorded, and their RGB values ​​were used for further chemometric analysis. The discriminant results of its PCA analysis are as follows: Figure 5 shown. Using the model established by the PSO-VWLS-SVM method to try to quantify individual acids in the mixture, the results are shown in Table 3. The recoveries of hexanoic acid and butyric acid in the 25 mixtures are close to 100%, and the RMSEP range is 2.87 ×10 -7 ~0.00...

Embodiment 3

[0097] The array sensor constructed in this embodiment, on the basis of identifying pure organic acid and mixed organic acid components, can also realize the identification of different kinds of Luzhou-flavor liquor samples. Liquor is rich in organic acid flavor substances. Due to the different content and proportion of organic acids in each type of liquor, it constitutes different flavor types and types of liquor.

[0098] In order to explore the practical application of this visual array sensor, we selected 12 main Luzhou-flavor liquors from China, and the specific information is shown in Table 4.

[0099] Table 4 Specific information of 12 kinds of Luzhou-flavor liquor

[0100]

[0101] For the identification of liquor, it is only necessary to replace the organic acid compound solutions of different concentrations in Example 1 with liquor samples of the same volume (the liquor does not need to be diluted, and the original liquor sample is directly added), and the control...

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Abstract

The invention discloses an organic acid small molecule based on aminophenol-Ag < + > / Cu < 2 + >, a white spirit identification method and a visual sensing array, and belongs to the technical field of organic matter identification and bionic sensors. The invention provides a method for identifying complex systems such as organic acid micromolecules and white spirit based on aminophenol-Ag < + > / Cu < 2 + >, aiming at the problems existing in identification of complex systems such as organic acid and white spirit in the prior art. According to the method disclosed by the invention, the organic acid is utilized to cause different degrees of inhibition effects on redox reaction of 4-aminophenol, 2-aminophenol, Ag < + > and Cu < 2 + >, and quantitative and qualitative analysis of a single organic acid sample and a mixed organic acid sample and identification of Baijiu and mixed Baijiu are realized by collecting colorimetric data, drawing a color difference diagram and combining chemometrics analysis; and a series of visual sensing arrays are designed by using the method.

Description

technical field [0001] The invention belongs to the technical field of organic matter identification and biomimetic sensors, in particular to an aminophenol-Ag-based + / Cu 2+ Organic acid small molecule, liquor identification method and visual sensing array. Background technique [0002] Most of the traditional organic acid detection methods such as chromatography and spectrometry have problems such as expensive instruments and long analysis time, which are difficult to be widely used in on-site detection and analysis. In recent years, a new type of cross-reactive arrays based on highly color-sensitive material-analyte interactions are increasingly favored by researchers. Different from traditional instrumental analysis methods, the visual array has the advantages of simple equipment, fast analysis speed, and accurate identification of the overall characteristics of the target through cross-response. The qualitative and quantitative analysis of the target can be achieved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/01G06N3/00G06N20/10
CPCG01N21/78G01N21/01G06N3/006G06N20/10
Inventor 付海燕王松涛佘远斌贾俊杰范尧许涛
Owner LUZHOU PINCHUANG TECH CO LTD
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