Rapid test kit for benzoyl peroxide banned additive in flour

A technology of benzoyl peroxide and detection kit, which is applied in the direction of chemical reaction of materials for analysis, and material analysis by observing the influence on chemical indicators, can solve the complex operation steps, high sensitivity and high cost. and other problems, to achieve the effect of accurate measurement results, sensitive color reaction, and simplified operation process.

Inactive Publication Date: 2013-04-24
JIANGSU VOCATION & TECHNICAL COLLEGE OF FINANCE & ECONOMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two methods require an image collector and a benzoyl peroxide content determination software system based on computer chromaticity recognition, and the degree of fading is not strongly correlated with the concentration of benzoyl peroxide, and the detection accuracy is not high
Chinese Patent Publication No. 101210907A discloses a high-performance liquid chromatography detection method for benzoyl peroxide in wheat flour. The detection sensitivity and accuracy of the method are high, but the method needs to carry out complex pretreatment operations to samples, and sample analysis Long time, requires expensive HPLC
Chinese Patent Publication No. 101339136A discloses a chemiluminescence system and method for measuring benzoyl peroxide. The detection principle is to utilize the reaction between benzoyl peroxide and luminol to generate light radiation with a wavelength of 425nm. The detection limit of the method is low, high sensitivity, but this method requires a chemiluminescence instrument, and the reaction process requires divalent cobalt ions as a catalytic substance, and the operation steps are complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: kit preparation

[0016] 1. Preparation of reaction reagent: Accurately weigh 0.140 g ferrous ammonium sulfate hexahydrate ((NH 4 ) 2 Fe(SO 4 ) 2 ×6H 2 O) in a 100 ml volumetric flask, add water to dissolve, then add 2 ml of 10 mol / L hydrochloric acid solution, and dilute to the mark with water, which is the reaction reagent; pack the reaction reagent in a dark or opaque container, and use Squeeze the container by hand to squeeze out the reaction reagent drop by drop;

[0017] 2. Prepare the color developer: accurately weigh 6.074 g of potassium thiocyanate (KSCN) in a 100 ml volumetric flask, add water to dissolve, and then dilute with water to the mark, which is the color developer; pack the color developer in a container, The container can be but not limited to a dark or opaque container, and the color developer can be squeezed out drop by drop by squeezing the container by hand;

[0018] 3. Prepare the positive control reagent stock solution: acc...

Embodiment 2

[0020] Embodiment 2: kit preparation

[0021] 1. Preparation of reaction reagents: Accurately weigh 0.356 g of ferrous chloride tetrahydrate (FeCl 2 ×4H 2 O) In a 1000 ml volumetric flask, add water to dissolve, then add 20 ml of 10 mol / L hydrochloric acid solution, and dilute to the mark with water, which is the reaction reagent; pack the reaction reagent in a dark or opaque container, and use Squeeze the container by hand to squeeze out the reaction reagent drop by drop;

[0022] 2. Preparation of developer: accurately weigh 3.806 ammonium thiocyanate (NH 4 SCN) in a 100 ml volumetric flask, add water to dissolve, and then dilute with water to the mark, which is the color developer; pack the color developer in a container, which can be but not limited to a dark or opaque container. The squeeze container can squeeze out the color developer drop by drop;

[0023] 3. Prepare the positive control reagent stock solution: accurately weigh 0.125 g of benzoyl peroxide into a 250...

Embodiment 3

[0025] Embodiment 3: kit preparation

[0026] 1. Preparation of reaction reagents: Accurately weigh 0.149 g of ferrous sulfate heptahydrate (Fe(SO 4 ) 2 ×7H 2 O) In a 100 ml volumetric flask, add water to dissolve, then add 2 ml of 10 mol / L sulfuric acid solution, and dilute to the mark with water, which is the reaction reagent; pack the reaction reagent in a dark or opaque container, and use Squeeze the container by hand to squeeze out the reaction reagent drop by drop;

[0027] 2. Preparation of color developer: Accurately weigh 6.080 g of sodium thiocyanate (NaSCN) in a 100 ml volumetric flask, add water to dissolve, and then dilute with water to the mark, which is the color developer; pack the color developer in a container, The container can be but not limited to a dark or opaque container, and the color developer can be squeezed out drop by drop by squeezing the container by hand;

[0028] 3. Prepare positive control reagent stock solution: accurately weigh 0.15 g of b...

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PUM

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Abstract

The invention discloses a rapid detection kit for benzoyl peroxide, a prohibited additive of flour. L of ferrous ion acidic aqueous solution; the chromogenic agent is a thiocyanate aqueous solution with a concentration of 0.5mol / L to 0.75mol / L; the positive control reagent stock solution is a benzoylethanol peroxide solution with a concentration of 500mg / L to 1500mg / L ; Standard color card includes several small color blocks, each color block corresponds to the concentration of benzoyl peroxide. In the present invention, after developing the color of the sample to be tested according to the operation method of the kit, the qualitative and semi-quantitative analysis is directly performed against the standard color card, and the whole sample analysis process does not require large-scale analysis instruments, which simplifies the operation process and shortens the analysis time.

Description

technical field [0001] The invention relates to a rapid detection kit and a preparation method, in particular to a rapid detection kit for benzoyl peroxide, a flour prohibited additive. Background technique [0002] Benzoyl peroxide (Benzoyl Peroxide, BPO), chemical formula [C 6 h 5 C(O)O] 2 , is an organic peroxide, which has a significant whitening effect on flour. In 1986, the National Food Additives Standardization Technical Committee passed the safety review and included benzoyl peroxide in my country's "Hygienic Standards for the Use of Food Additives" (GB2760), allowing it to be used as a flour treatment agent and bleaching agent in wheat flour processing, with a maximum usage limit 60mg / kg. However, because benzoyl peroxide destroys the nutritional components of flour, especially for β-carotene and V in flour E Has a strong destructive effect. The intake of benzoic acid, the oxidation product of benzoyl peroxide, increases the burden on the liver and easily lead...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 顾鹏程田林双吴存兵屠湘君陈长毅李逸鹤穆飞虎陈芳
Owner JIANGSU VOCATION & TECHNICAL COLLEGE OF FINANCE & ECONOMICS
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