A preparation method of anti-sedimentation carrier particles for food safety testing

A technology for carrier particles and food safety, applied in the field of detection, can solve the problems of ineffective amplification of reaction signals and easy occurrence of sedimentation, and achieves the effect of contributing to the reaction phenomenon, reducing the interface energy and improving the application.

Active Publication Date: 2019-04-16
安徽悠之优味食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the silica microsphere itself is colorless and cannot effectively amplify the reaction signal when used in an indirect agglutination test, and at the same time, it is prone to sedimentation after long-term storage, a food safety detection method is provided. Preparation method of anti-sedimentation carrier particles

Method used

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  • A preparation method of anti-sedimentation carrier particles for food safety testing

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example 1

[0018] In terms of parts by weight, weigh 45 parts of n-butanol, 10 parts of cyclohexane, 3 parts of propylene glycol polyoxyethylene polyoxypropylene ether, and 55 parts of deionized water in a beaker, stir and mix, and place under 200W ultrasonic Disperse for 10 minutes to obtain a dispersed matrix emulsion; according to the mass ratio of 1:10, stir and mix reactive red 195 and titanate coupling agent 201, and ultrasonically disperse at 200W for 10 minutes to obtain a dye modification solution. Weigh 10 parts of dye modification solution, 45 parts of water glass with a modulus of 1.5, 35 parts of 15% hydrochloric acid by mass fraction and 65 parts of dispersed matrix emulsion in a beaker, heat and stir in a water bath at 25°C, and keep warm for 2 hours. , to obtain a mixed solution, according to the mass ratio of 1:8, acetone was added dropwise to the mixed solution, and the acetone addition time was controlled to be 10 minutes. Rinse with water three times, then dry at 400°...

example 2

[0020] In terms of parts by weight, weigh 47 parts of n-butanol, 12 parts of cyclohexane, 4 parts of propylene glycol polyoxyethylene polyoxypropylene ether, and 57 parts of deionized water in a beaker, stir and mix them, and put them under 250W ultrasonic Disperse for 12 minutes to obtain a dispersed matrix emulsion; according to the mass ratio of 1:10, stir and mix reactive red 120 and titanate coupling agent TC-114, and ultrasonically disperse at 250W for 12 minutes to obtain a dye modification solution, calculated in parts by weight 12 parts of dye modification solution, 47 parts of water glass with a modulus of 1.7, 37 parts of hydrochloric acid with a mass fraction of 15% and 67 parts of dispersed matrix emulsion were weighed and placed in a beaker, heated in a water bath at 27°C and mixed with stirring, and kept for reaction After 2.5 hours, the mixed solution was obtained, and acetone was added dropwise to the mixed solution according to the mass ratio of 1:8, and the a...

example 3

[0022] In terms of parts by weight, weigh 50 parts of n-butanol, 15 parts of cyclohexane, 5 parts of propylene glycol polyoxyethylene polyoxypropylene ether, and 60 parts of deionized water in a beaker, stir and mix, and place under 00W for ultrasonic Disperse for 15 minutes to obtain a dispersed matrix emulsion; according to the mass ratio of 1:10, stir and mix reactive red 111 and titanate coupling agent YB-403, and ultrasonically disperse at 300W for 15 minutes to obtain a dye modification solution, calculated in parts by weight 15 parts of dye modification solution, 50 parts of water glass with a modulus of 2.0, 40 parts of 15% hydrochloric acid by mass fraction and 70 parts of dispersed matrix emulsion were weighed in a beaker, heated in a water bath at 30°C and mixed with stirring, and kept for reaction After 3 hours, the mixed solution was obtained, and acetone was added dropwise to the mixed solution according to the mass ratio of 1:8, and the acetone dropping time was ...

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Abstract

The invention relates to a preparation method of an anti-settling carrier particle for food safety detection, and belongs to the technical field of detection. The preparation method comprises the following steps: preparing a dispersion matrix emulsion from n-butanol, cyclohexane, propylene glycol and polyoxyethylene polyoxypropylene ether; and stirring and mixing a dye and a titanate coupling agent, carrying out acoustic dispersion to obtain a dye modification solution, placing the dye modification solution, water glass, hydrochloric acid and the dispersion matrix emulsion in a beaker, carrying out water bath heating and stir mixing, carrying out a heat insulation reaction to obtain a mixed solution, dropwise adding acetone into the mixed solution according to a certain mass ratio, centrifuging the obtained solution after the dropwise addition is completed, collecting the obtained lower layer precipitate, flushing the precipitate with deionized water, and drying, grinding and sieving the precipitate to obtain the anti-settling carrier particle for food safety detection.

Description

technical field [0001] The invention relates to a preparation method of anti-sedimentation carrier particles for food safety testing, belonging to the technical field of testing. Background technique [0002] Food safety has always been the focus of people's attention, and public health safety problems caused by food-borne pathogens are one of the biggest hidden dangers of food safety. The detection technology of foodborne pathogens is mainly divided into traditional detection technology and modern rapid detection technology. Modern rapid detection technology has attracted much attention because of its advantages of fast, simple, low cost and high accuracy. As a modern rapid detection technology, indirect agglutination test can quickly and easily realize the rapid detection of pathogenic bacteria, so it is widely used in bacteriological diagnosis. It has the advantages of simple operation, intuitive agglutination, easy storage of allergenic particles, rapid detection withou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/569G01N33/531
Inventor 刘滨季美陈倩
Owner 安徽悠之优味食品有限公司
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