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Method for identifying doping of potassium iodide in algae iodate and application thereof

A technology of seaweed iodine and potassium iodide, which is applied in the direction of analyzing materials through chemical reactions and observing the impact on chemical indicators, etc., can solve the problems of inability to efficiently measure seaweed iodine adulteration, and achieve simple identification methods easy effect

Pending Publication Date: 2020-08-07
HUNAN LINUO BIOLOGICAL PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a method for identifying seaweed iodine doped with potassium iodide in view of the deficiency in the prior art that the adulteration in seaweed iodine cannot be efficiently determined

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 0%, 2%, and 5% potassium iodide to equal portions of seaweed iodine, and mix well to obtain three kinds of seaweed iodine salts A, B, and C respectively.

[0026] Take 1g of the substances containing algae iodine of A, B, and C respectively in test tubes, add 10mL of distilled water each to dissolve the substances containing algae iodine, take 0.5mL of seaweed iodine solution, add 2mL of 0.3wt.% FeCl 3 Solution, shake well, then add 1.0mL of 0.5wt.% starch reagent, adjust the pH value to 6.9~7.2, heat in 60℃ water bath for 5min, observe the color change. The color changes are shown in Table 1:

[0027] Table 1

[0028] Color changes A brown to orange B brown to blue C brown to dark blue

Embodiment 2

[0030] Add 0%, 2%, and 5% potassium iodide to equal portions of seaweed iodine, and mix well to obtain three kinds of seaweed iodine salts A, B, and C respectively.

[0031] Take 1g of seaweed iodine of A, B, and C respectively in test tubes, add 10mL of distilled water to dissolve the seaweed iodine, take 0.5mL of seaweed iodine solution, add 2.5mL of 0.1wt.% FeCl 3 Solution, shake well, then add 2.0mL of 0.1wt.% starch reagent, adjust the pH value to 6.9~7.2, heat in 40℃ water bath for 8min, observe the color change. The color changes are shown in Table 2:

[0032] Table 2

[0033] Color changes A brown to orange B brown to blue C brown to dark blue

Embodiment 3

[0035] Add 0%, 2%, and 5% potassium iodide to equal portions of seaweed iodine, and mix well to obtain three kinds of seaweed iodine salts A, B, and C respectively.

[0036] Take 1g of seaweed iodine of A, B, and C respectively in a test tube, add 10mL of distilled water to dissolve the seaweed iodine, take 0.5mL of seaweed iodine solution, add 0.5mL of 1.5wt.% FeCl 3 Solution, shake well, then add 1.0mL of 1.0wt.% starch reagent, adjust the pH value to 6.9~7.2, heat in 60℃ water bath for 5min, observe the color change. The color changes are shown in Table 2:

[0037] Table 2

[0038] Color changes A brown to orange B brown to blue C brown to dark blue

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PUM

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Abstract

The invention discloses a method for identifying doping of potassium iodide in algae iodate and application thereof. According to the method, the characteristics that algae iodate is extremely good instability and free of free iodine ions, and organic iodine and inorganic iodine exist in a certain combination form are utilized, a low-concentration light oxidizing agent is dropwise added into algae iodate diluent, and whether potassium iodide is added into algae iodate or not is identified through a chromogenic reaction of a starch solution. The method is simple, feasible, efficient and convenient, the algae iodate adulterated in the market can be identified, and the body health and benefits of people are guaranteed.

Description

technical field [0001] The invention relates to the technical field of seaweed iodine identification, more particularly, to a method for identifying seaweed iodine doped with potassium iodide and its application. Background technique [0002] Seaweed iodine is made from kelp through water extraction, purification, concentration and other physical processing techniques. It is rich in iodine, mannitol, soluble fucoidan and other natural components of kelp, and has a special flavor of kelp. According to its raw materials Source, to distinguish mineral iodine, named seaweed iodine. [0003] In seaweed iodine products, the form of iodine is organic and inorganic. The content of iodine in dried seaweed is generally 0.3%~0.6%, and it exists in the form of organic iodine and inorganic state at the same time. The ratio of iodine is 4:1. The organic iodine in seaweed iodine is mainly tyrosine iodine. In the production process of seaweed iodine, iodine is only extracted from algae by...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 左斌杨辉杨博彭亚琦
Owner HUNAN LINUO BIOLOGICAL PHARMA
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