Method for rapidly detecting white spirit based on nanometer material-organic dye colorimetric sensing array

A technology of colorimetric sensing and nanomaterials, which is applied in the field of rapid detection of liquor based on nanomaterials-organic dye colorimetric sensing arrays, can solve the problems of cumbersome operation, high cost, and difficult on-site real-time monitoring, so as to improve analysis efficiency, The effect of reducing inspection cost and shortening inspection time

Pending Publication Date: 2021-04-30
LUZHOU PINCHUANG TECH CO LTD
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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned existing detection technologies, the purpose of the present invention is to provide a simple, fast and efficient method for detecting liquor based on nanomaterial-organic dye colorimetric sensing arrays, so as to solve the problems of high cost, cumbersome operation and consumption of the existing detection methods. Time-consuming and laborious and large-scale equipment, resulting in difficulties in on-site real-time monitoring and other issues

Method used

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  • Method for rapidly detecting white spirit based on nanometer material-organic dye colorimetric sensing array
  • Method for rapidly detecting white spirit based on nanometer material-organic dye colorimetric sensing array
  • Method for rapidly detecting white spirit based on nanometer material-organic dye colorimetric sensing array

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Embodiment

[0035] The method for rapidly detecting liquor based on a nanomaterial-organic dye colorimetric sensing array, comprising the following steps:

[0036] (1) Synthesis of detection materials

[0037] Synthesis of GSH-Au NPs: Under vigorous stirring, 5 mL of trisodium citrate (170 mM) was added to a 250 mL round-bottomed flask containing 90 mL of ultrapure water, followed by 5 mL of HAuCl 4(5 mM) was quickly added to the flask and heated to boiling. When the solution changed from light yellow to wine red, the heating was continued for 30 min and then stopped. After cooling to room temperature, Au NPs were obtained. Then the GSH solution (50 mM dissolved in 50% ethanol and water mixture by volume) was flushed with nitrogen for 45 min, and then an equal amount of Au NPs was added, and reacted at room temperature for 12 h in the dark to obtain GSH-coated Au NPs ( GSH-Au NPs).

[0038] Synthesis of AA-Au NPs: 4.5 mL HAuCl 4 (0.1 mM) and 0.5 mL AA (0.75 mM) were vigorously stirred...

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Abstract

The invention discloses a method for quickly detecting white spirit based on a nano-material organic dye colorimetric sensor array. The method comprises the following steps of introducing six nano-materials and three dyes to construct a nano-material / dye composite colorimetric sensor array, and extracting change values (delta RGB) of array points RGB before and after reaction as detection signals; and processing the data by utilizing pattern recognition and a radial basis function neural network so as to explore the performance of the array detection white spirit. Compared with the prior art, the method has high recognition and detection capacity for different white spirits, combines a nano material with a traditional dye, improves recognition sensitivity of the array, reduces the number of array points, is simple in data processing, has the advantages of simple operation, short test time, high detection efficiency, good sensitivity and the like, and is suitable for popularization and application. The method has a good application prospect in the aspect of on-site real-time detection of white spirit.

Description

technical field [0001] The invention relates to the technical field of food detection, in particular to a method for rapidly detecting liquor based on a nanomaterial-organic dye colorimetric sensing array. Background technique [0002] Liquor is mostly composed of ethanol and water, and trace components only account for 2%. Due to the diversity of liquor brewing microorganisms, under the joint action of various microorganisms, there are many flavor components in liquor. Researchers used chromatography and chromatography-mass spectrometry to separate and identify 1874 trace components from liquor. All are low, ranging from ng / L to mg / L, and at the same time, the content and proportion in various liquors are different, thus constituting the different aromas and styles of various liquors. At present, some conventional methods have been used to distinguish liquors of different categories and origins, such as mass spectrometry and spectrometry; although spectrometry is a simple,...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 沈才洪张宿义黄锐张晶侯长军霍丹群杨粟平
Owner LUZHOU PINCHUANG TECH CO LTD
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