Detection kit and detection method of calcium peroxide in flour

A detection kit and calcium peroxide technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problems that there is no unified method for calcium peroxide detection, etc. Achieve the effect of simple operation

Inactive Publication Date: 2019-03-08
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As a bleaching agent, calcium peroxide was widely used as a flour treatment agent to increase whiteness, but in 2011, seven departments including the Ministry of Health issued a notice on the withdrawal of food additives benzoyl peroxide and calcium peroxide, and pointed out that food additives that are too Benzoyl peroxide and calcium peroxide are no longer technically necessary. Since May 1, 2011, it is forbidden to add benzoyl peroxide and calcium peroxide in flour production. Food additive manufacturers are not allowed to produce and sell food Additives of benzoyl peroxide and calcium peroxide, the content of food standards that allow the addition of benzoyl peroxide and calcium peroxide in flour is automatically abolished
[0004] Although the relevant departments have revoked the relevant regulations on adding calcium peroxide treatment agents to flour, there is no unified method for the detection of calcium peroxide in flour, and most of the analysis and detection methods are affected by the experimental environment and instruments and cannot be based on the detection requirements. Realize on-site rapid detection

Method used

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  • Detection kit and detection method of calcium peroxide in flour

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] According to the actual requirements of the site, it is only necessary to determine whether the flour contains calcium peroxide. In the above cases, the following steps are adopted:

[0053] (1) Take an appropriate amount of flour into a sample bottle, add water and stir, and after fully dissolving, add an acid-base indicator dropwise. If the sample solution changes color after adding the indicator, it is judged that the flour must be doped with alkaline substances, and the flour is unqualified;

[0054] (2) If the solution does not change color after adding the indicator, take an appropriate amount of flour into the sample bottle again, add water to make the flour a semi-fluid viscous paste, add 1% sulfuric acid solution, and quickly add 10% sodium hydroxide solution to stir , add 3-aminophthalhydrazide solution and potassium ferricyanide reagent in turn, then place the sample bottle in a dark environment, and observe the color change;

[0055] If the sample in the sam...

Embodiment 2

[0057] According to the actual requirements on site, it is also necessary to determine the content of calcium peroxide in the flour. In the above cases, the following steps are adopted:

[0058] (1) Weigh an appropriate amount of flour into a sample bottle, add an organic solvent to fully shake, oscillate, let stand for a while, and discard the supernatant;

[0059] (2) Add 1% dilute sulfuric acid solution to the sample after discarding the supernatant, shake well and let stand;

[0060] (3) adjust the pH to 6.0 with 10% sodium hydroxide solution and 0.1% sodium hydroxide solution respectively;

[0061] (4) Add 0.5%-1.0% horseradish peroxidase, 0.02-0.08mol / L potassium iodide and 0.08-0.15mol / L 4,4-(dimethylamino)-diphenylmethane solution in turn, shake well After standing;

[0062] (5) Observe the color and compare it with the standard color band to obtain the content of calcium peroxide in the flour.

[0063] Wherein the preparation method of the standard color band is as...

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Abstract

The invention discloses a detection kit of calcium peroxide in flour. The detection kit comprises an indicator, pH (potential of hydrogen) test paper, reaction reagents, sensitizing agents, color developing agents, a standard colorimetric tape, a dropper and a sample bottle. A detection method of the calcium peroxide in the flour by the detection kit includes the steps: performing potential of hydrogen detection and qualitative analysis on a flour sample; detecting the content of the calcium peroxide in the flour according to on-site requirements. The detection kit is simple to operate, qualification of the flour can be detected according to actual situations, the flour can be rapidly, accurately and quantitatively analyzed and tested according to the standard colorimetric tape, and the detection kit is suitable for analysis and detection of large-batch flour.

Description

technical field [0001] The invention relates to the technical field of food safety detection, in particular to a detection kit and detection method for calcium peroxide in flour. Background technique [0002] Calcium peroxide has the characteristic of releasing oxygen when it meets water, and it is non-toxic and does not pollute the environment. It can be used as an oxygen supply agent for fish farming, crop cultivation, sewage treatment, etc. In addition, calcium peroxide also Used as a quick-drying agent for bactericides, preservatives, antacids, oil bleaching agents, and sealing cement. It is used as an additive in the manufacture of food, tooth powder, and cosmetics. It can also be used as an oxide cathode material. It is used in agriculture. Non-toxic disinfectant for seeds and grains. [0003] As a bleaching agent, calcium peroxide was widely used as a flour treatment agent to increase whiteness, but in 2011, seven departments including the Ministry of Health issued a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/80
CPCG01N21/78G01N21/80
Inventor 周显青张玉荣张德伟
Owner HENAN UNIVERSITY OF TECHNOLOGY
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