Detection kit for calcium peroxide in flour and detection method for calcium peroxide

A calcium peroxide and kit technology, which is applied in the direction of material analysis by observing the influence on chemical indicators, and analysis by chemical reaction of the material, can solve the problem of not detecting the calcium peroxide kit in flour, etc., Achieve the effect of strong practicability, easy operation and simple method

Active Publication Date: 2013-02-27
PONY TESTING INT GRP SHANGHAI CO LTD
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing national standards, industry standards and open literature, there is no method and rapid determination kit for the detection of calcium peroxide in flour

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detection kit for calcium peroxide in flour and detection method for calcium peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of standard color chart

[0037] Analysis steps: Accurately weigh 10g of wheat flour sample without calcium peroxide whitening agent (accurate to 0.01g) in a 100mL colorimetric tube, then weigh high-purity reagent calcium peroxide 0mg, 0.20mg, 0.50mg respectively , 1.00mg, 2.00mg, 5.00mg, and 10.00mg were added to the colorimetric tube, and 50mL of 1% dilute sulfuric acid was added sequentially, vortexed, and reacted at room temperature for 10min. With 20% and 0.1% sodium hydroxide solution Adjust the pH value to 7.0, add 3mL of enzyme reagent solution, dilute to 100mL with secondary water, keep the temperature in a 37°C water bath with a horizontal shaker for 10min, and cool to room temperature to obtain a series of blank matrix standard solutions, corresponding to each A kilogram of flour contains 0 mg, 20 mg, 50 mg, 100 mg, 200 mg, 500 mg, and 1000 mg of calcium peroxide. The colored solution is photographed, and the color collected is made into a standar...

Embodiment 2

[0039] Calcium Peroxide Rapid Determination Kit

[0040] The kit is equipped with: plastic sample spoons, 2 pieces, filled with a flat spoon of flour with a mass of about 2g; 3mL disposable plastic droppers with scales, 100 pieces; 50mL stoppered glass colorimetric tubes, 30 pieces; 50mL plastic measuring cylinders, 1 piece; test tube rack, 1 piece, 20 holes, the diameter of the hole is suitable for 50mL stoppered glass colorimetric tube; standard color comparison card, 1 piece, which contains blank and 6 series of colors in gradient changes from light red to deep red The content of calcium peroxide represented by each strip is marked below each strip; broad pH test paper (1-14), 2 boxes; precision pH test paper (6.4-8.0), 2 boxes; reaction reagents: three kinds of reagents in plastic bottles, respectively Labeled as 1% dilute sulfuric acid, 20% dilute sodium hydroxide, 0.1% sodium hydroxide, 500mL per bottle. 500mL plastic washing bottle, filled with distilled water, 1pc.

Embodiment 3

[0042] Analysis steps: Take a scoop of dumpling powder of a certain brand in a 50mL colorimetric tube, add 20mL of 1% dilute sulfuric acid, react at room temperature for 10min, after cooling to room temperature, adjust the pH value to 7.0 with 20% and 0.1% sodium hydroxide solution , add 2mL of enzyme reagent solution, dilute to the mark with secondary water, and shake well. After developing the color for 5 minutes at room temperature, observe the color. The sample is a pink cloudy solution, indicating that the sample contains calcium peroxide. Compared with the standard color card, the color of the test solution is close to the color of the standard color bar of 100mg / kg, indicating that calcium peroxide has been detected in the sample, and the content is about 100mg / kg.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention provides a detection kit for calcium peroxide in flour, which is composed ??of plastic sample spoons, plastic droppers, test tubes, a measuring cylinder, a test tube rack, a standard colorimetric card, a chromogenic reagent, pH test strips, reaction reagents, and a wash bottle. Tests are carried out on the samples by observing the different colors being shown and contrasting with the standard colorimetric card to perform qualitative and semi-quantitative detections. The detection method for calcium peroxide in flour includes: adding dilute acid into flour to react, adjusting the pH value to neutral with an alkaline solution, adding a mixed solution including a peroxidase-containing reagent, developing color, comparing with the standard colorimetric card to obtain the qualitative and semi-quantitative result. The detection kit and the detection method of the invention have the advantages of easy usage, fast color developing, relatively loose detection conditions, high sensitivity and low cost, and are suitable for on-site rapid screening assays.

Description

technical field [0001] The invention relates to a detection kit and application thereof, in particular to a kit for rapidly determining calcium peroxide in flour and a qualitative and semi-quantitative determination method for artificially adding calcium peroxide in flour. Background technique [0002] Calcium peroxide is a light yellow crystalline powder with a molecular weight of 72.08, widely used in food, chemical, textile and other industries. It is often used in the fields of improving post-cooking of wheat flour, flour whitening, wheat flour gluten enhancer, flour decolorizer, bread improver, edible oil bleaching, etc. In order to increase the texture and mouthfeel of wheat flour, benzoyl peroxide and calcium peroxide are generally added in the flour industry as gluten-enhancing agents and whitening agents for wheat flour. Since May 1, 2011, my country has banned the addition of benzoyl peroxide and calcium peroxide in flour production Announcement (No. 4, 2011)]. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 宋薇
Owner PONY TESTING INT GRP SHANGHAI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap