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A method for detecting sunset yellow in bread based on three-way induced potentials with different phases and differences

A technology of induced potential and sunset yellow, applied in the direction of material magnetic variables, etc., can solve the problems of long analysis period, complicated operation and high cost, and achieve the effect of strong repeatability, simple operation and low cost

Active Publication Date: 2022-04-08
利诚检测认证集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid chromatography is currently the most commonly used method for the determination of sunset yellow. It has the advantages of high sensitivity and good accuracy, but its pretreatment process is cumbersome, the analysis cycle is long, and the use and maintenance costs are high.
Spectroscopy instruments and operations are relatively simple, but the sensitivity is not high, and it is difficult to meet the needs of actual detection
CN201611218041.3, CN201710003040.5, etc. provide a kind of method for electrochemical detection of sunset yellow, but it first needs to prepare electrodes based on nanomaterials, the operation is complicated and the cost is high
[0005] In summary, the existing methods for the determination of sunset yellow have defects, and it is difficult to meet the needs of on-site detection of large quantities of samples

Method used

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  • A method for detecting sunset yellow in bread based on three-way induced potentials with different phases and differences
  • A method for detecting sunset yellow in bread based on three-way induced potentials with different phases and differences

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Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1 This embodiment is carried out based on a kind of differential three-way induction potential pass detection equipment, and the structure of the device can be referred to figure 1 As shown, among them. The number of winding turns of the primary coil is 5, and the winding turns of the three secondary coils distributed sequentially along the flow direction of the material liquid are 5:15:25 respectively, and the inner diameter of each spiral pipe is 0.1mm, while the parallel structure iron The magnetic path length of the core was 120 cm.

[0032] A method for detecting sunset yellow content in bread provided by this embodiment comprises:

[0033] Grind 6 types of commercially available bread to about 2000 mesh with a superfine grinder, and mix with 1-aminopropyl-3-methylimidazolium tetrafluoroborate, ethanol, and deionized water according to the ratio of 1g: 10g: 200mL: 250mL After fully mixing, ultrasonic treatment for 10 minutes, and then high-speed centri...

Embodiment 2

[0039] Embodiment 2 This embodiment is based on a three-way induction potential detection device with different phases and differences. The structure of this device is basically the same as that of Embodiment 1, the difference is that the number of winding turns of the primary coil is 3, and the windings along the flow direction of the material liquid are sequentially The winding turns of the three distributed secondary coils are 3:9:15 respectively, the inner diameter of each spiral pipe is 0.3 mm, and the magnetic circuit length of the parallel structure iron core is 100 cm.

[0040] A method for detecting sunset yellow content in bread provided by this embodiment comprises:

[0041] Grind 6 types of commercially available bread to about 4000 mesh with a superfine grinder, and mix them with 1-aminopropyl-3-methylimidazolium tetrafluoroborate, ethanol, and deionized water according to the ratio of 1g: 8g: 200mL: 200mL After fully mixing, ultrasonic treatment for 5 minutes, an...

Embodiment 3

[0046] Embodiment 3 This embodiment is based on a three-way induced potential detection device with different phases and differences. The structure of this device is basically the same as that of Embodiment 1, the difference is that the number of winding turns of the primary coil is 6, and the windings along the flow direction of the material liquid are sequentially The winding turns of the three distributed secondary coils are 6:18:30 respectively, the inner diameter of each spiral pipe is 0.5 mm, and the magnetic circuit length of the parallel structure iron core is 80 cm.

[0047] A method for detecting sunset yellow content in bread provided by this embodiment comprises:

[0048] Grind 6 types of commercially available bread to about 4000 mesh with a superfine grinder, and mix with 1-aminopropyl-3-methylimidazolium tetrafluoroborate, ethanol, and deionized water according to the ratio of 1g: 5g: 150mL: 100mL After fully mixing, ultrasonic treatment for 15 minutes, and then...

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Abstract

The invention discloses a method for detecting sunset yellow in bread based on three-way induction potentials of different phases and differences. , ethanol, and deionized water are fully mixed, then ultrasonically treated, and then subjected to high-speed centrifugation, and then the supernatant is separated and injected into the three-way induction potential detection equipment with different phases and differences. By detecting the potential difference at both ends of each spiral pipeline, Finally measure the sunset yellow content in the bread to be tested. The method provided by the invention can quickly, efficiently and accurately detect the sunset yellow content in bread, the minimum detection limit is 0.1mg / Kg, the detection range can reach 1mg / Kg~1g / Kg, and the operation is simple, the cost is low, and the Strong repeatability, especially suitable for rapid detection of large batches of samples.

Description

technical field [0001] The invention relates to a method for detecting the content of sunset yellow in food, in particular to a method for detecting sunset yellow in bread based on three-way induction potentials of different phases and differences, and belongs to the technical field of food electrical detection. Background technique [0002] Sunset yellow (sunset yellow, referred to as SY), also known as edible yellow No. 5 (Japan), edible yellow No. 3, sunset yellow, orange yellow, sunset yellow, chemical name 1-(4′-sulfo-1′-phenylazo )-2-naphthol-6-sulfonic acid disodium salt is a commonly used artificial food coloring with stable properties and low price, and is widely used in the coloring of food and medicine. [0003] China's "Hygienic Standards for the Use of Food Additives" (GB2760-1996) stipulates that sunset yellow can be used in high-sugar fruit juice drinks, carbonated drinks, concentrated fruit juices, formulated wines, candies, cakes, canned watermelon sauce, gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/74
CPCG01N27/74
Inventor 韦秀胆金钊郑加辉钟美媛孟嫚陈伦韬霍锦双陈新文邓清杨哪
Owner 利诚检测认证集团股份有限公司