Fast testing method of hydrogen peroxide residue in milk-like liquid and testing reagent kit thereof

A detection method, the technology of hydrogen peroxide, is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions. Detection cost, short inspection time, obvious effect of detection phenomenon

Inactive Publication Date: 2008-12-24
INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the price of hydrogen peroxide speed test paper sold on the market is about 300 yuan per box (100 strips), and the average cost of testing one sample is 3 yuan. For manufacturers, it greatly increases the testing cost and is not suitable for manufacturers. widely used

Method used

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  • Fast testing method of hydrogen peroxide residue in milk-like liquid and testing reagent kit thereof
  • Fast testing method of hydrogen peroxide residue in milk-like liquid and testing reagent kit thereof
  • Fast testing method of hydrogen peroxide residue in milk-like liquid and testing reagent kit thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A rapid detection method for residual hydrogen peroxide in milk, the detection is carried out according to the following steps:

[0035] 1. Materials:

[0036] 100ml volumetric flask, 50ml beaker, 18×180 test tube, 10ml graduated straw, 1ml graduated straw, dripper, weighing spoon.

[0037] 2. Drugs and reagents:

[0038] Potassium iodide (analytical pure); 10g / L starch solution.

[0039] 3. Preparation of color chart:

[0040] a) Artificially mixed different concentrations of hydrogen peroxide into the blank milk to make hydrogen peroxide containing 0mg / L, 1mg / L, 2mg / L, 5mg / L, 10mg / L, 25mg / L, 50mg / L, 100mg / L sample liquid;

[0041] b) Take 3mL of each of the above-mentioned milk samples with different gradients in a test tube, add 1 teaspoon of potassium iodide (about 0.3-0.5g), shake well, then add 3-5 drops of 10g / L starch solution, shake well After observing the color change as shown in Table 1:

[0042] Table 1

[0043]

[0044] c) Select 6 representativ...

Embodiment 2

[0066] A rapid detection method for residual hydrogen peroxide in milk, the detection is carried out according to the following steps:

[0067] 1. Materials:

[0068] 100ml volumetric flask, 50ml beaker, 18×180 test tube, 10ml graduated straw, 1ml graduated straw, dripper, weighing spoon.

[0069] 2. Drugs and reagents:

[0070] Potassium iodide (analytical pure); 10g / L starch solution.

[0071] 3. Preparation of color chart:

[0072] a) Artificially mix different concentrations of hydrogen peroxide into the blank milk to make sample solutions with hydrogen peroxide contents of 0mg / L, 2mg / L, 5mg / L, 10mg / L, 25mg / L and 50mg / L;

[0073] b) Take 3mL of each of the above-mentioned milk samples with different gradients in a test tube, add 1 teaspoon of potassium iodide (about 0.15-0.20g), shake well, then add 1 drop of 10g / L starch solution, shake well and observe The color changes are shown in Table 6:

[0074] Table 6

[0075]

[0076] c) For the 6 points of reaction color ...

Embodiment 3

[0088] A rapid detection method for residual hydrogen peroxide in milk, the detection is carried out according to the following steps:

[0089] 1. Materials:

[0090] 100ml volumetric flask, 50ml beaker, 18×180 test tube, 10ml graduated straw, 1ml graduated straw, dripper, weighing spoon.

[0091] 2. Drugs and reagents:

[0092] Potassium iodide (analytical pure); 10g / L starch solution.

[0093] 3. Preparation of color chart:

[0094] a) Artificially mixed different concentrations of hydrogen peroxide into the blank milk to make hydrogen peroxide containing 0mg / L, 1mg / L, 2mg / L, 5mg / L, 10mg / L, 25mg / L, 50mg / L, 100mg / L sample liquid;

[0095] b) Take 3mL of milk samples with different gradients above in a test tube, add 1 teaspoon of potassium iodide (about 1.0-1.5g), shake well, then add 1.5mL of 10g / L starch solution dropwise, shake well and observe The color changes are shown in Table 9:

[0096] Table 9

[0097]

[0098] c) Select 6 representative points of the rea...

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Abstract

The invention relates to a detection method, in particular to a quick detection method and a detection kit for residual hydrogen peroxide in milk, belonging to the field of chemical composition detection technique. The quick detection method for detecting the residual hydrogen peroxide in the milk comprises the steps as follows: quantitative potassium iodide and amylum are added into the milk sample; according to the colour change of the milk sample, whether residual hydrogen peroxide exists in the milk sample is judged and the content of the hydrogen peroxide is measured. The invention provides the detection kit prepared according to the method of the invention at the same time. The method of the invention has the advantages of low cost, convenient and quick operation and short detection time, has the detection limit of 2mg/L and is a quick half-quantitative detection method.

Description

technical field [0001] The invention relates to a detection method for adulterated components in milk, in particular to a rapid detection method for residual hydrogen peroxide in milk and a detection kit according to the method, belonging to the technical field of chemical component detection. Background technique [0002] When buying fresh milk, in order to keep the milk fresh, some unscrupulous traders will add hydrogen peroxide to the milk for adulteration. Excessive intake of hydrogen peroxide will cause many harms to the human body. However, the current national standard methods for the detection of milk adulteration are very limited, which cannot meet the actual needs and cannot well control the entry of adulterated milk into the factory. There is no standard detection method for hydrogen peroxide residue in milk and milk powder in the national standard. [0003] The on-line quality control of milk purchase needs to adopt a detection method that is fast, convenient, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 王丹慧高娃李梅刘卫星
Owner INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD
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