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Simple detection method for iron series deoxidant ingredient

A technology of iron-based deoxidizer and detection method, applied in the field of food packaging accessories, can solve problems such as uneconomical, cumbersome detection methods, etc., and achieve the effect of ensuring safety

Inactive Publication Date: 2006-09-06
SHANGHAI QIBAO HIGH SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing detection methods are too cumbersome and uneconomical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] Detection experiment 1: detection of electrolyte in iron-based deoxidizer

[0012] Experimental items: iron-based deoxidizer sample, dilute hydrochloric acid, dilute nitric acid, silver nitrate solution, beaker, test tube, plastic dropper, glass rod, iron stand, funnel, crucible, alcohol lamp, nickel-chromium wire, etc.

[0013] Experimental process: Pour the iron-based deoxidizer sample into a beaker and add distilled water to dissolve it. Dip the supernatant liquid with nickel-chromium wire, burn it on the flame, the flame color is yellow, it can be seen that there is Na + . Then take another upper layer of clear night and put it in the test tube, add a small amount of dilute HNO 3 , and then dropwise added AgNO 3 solution, it was found that a white precipitate was formed, and it was known that there was Cl - .

[0014] Experimental conclusion: The electrolyte contained in the deoxidizer is sodium chloride.

[0015] Detection experiment 2: test the iron element ...

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Abstract

The disclosed method comprises: detecting electrolyte with flame reaction, detecting anion with Cl- and CO3(2-); using diluted HCl and KCNS solution to detect iron element and its existing form; igniting in crucible, then reacting with CuO to detect the carbon power. This invention is simple and fast.

Description

technical field [0001] The invention relates to a food packaging auxiliary material, in particular to a food deoxidizer. Background technique [0002] Deoxidizers are substances that absorb oxygen. It is different from antioxidants. It is not directly added to food, but put into a bag with good air permeability and then placed in a sealed food package to absorb oxygen, prevent food mildew, insect damage, and lipid oxidation, and maintain food originality. It has unique color, aroma and taste, prevents insect damage, inhibits the growth of bacteria, maintains nutrients, and prolongs the fresh-keeping time. Since the deoxidizer does not need to be added to the food, safety problems caused by additives are avoided. Now the proportion of processed food of deoxidizer is: 45% for cakes and sweets; 30% for processed food of livestock, aquatic products and agricultural products; 15% for tea, coffee, etc.; 10% for other foods such as health food and home-cooked dishes; In products...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N35/00G01N21/71G01N27/26G01N31/00
Inventor 陆雨薇黎良枝
Owner SHANGHAI QIBAO HIGH SCHOOL
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