A kind of measuring method to peroxide value in microcapsule product by volumetric method

A technology of peroxide value and microcapsule, which is applied in the field of volumetric method for the determination of peroxide value in microcapsule products, can solve problems such as poor health, and achieve the effect of reliable method, reliable implementation and convenient method.

Inactive Publication Date: 2011-12-07
PONY TESTING INT GRP SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because some small molecular substances produced by the oxidative rancidity of oils have adverse effects on the human body in the body, such as free radicals, so oils with too high a peroxide value are not good for the body

Method used

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  • A kind of measuring method to peroxide value in microcapsule product by volumetric method
  • A kind of measuring method to peroxide value in microcapsule product by volumetric method
  • A kind of measuring method to peroxide value in microcapsule product by volumetric method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Precision detection of peroxide value in non-dairy creamer

[0014] Acid hydrolysis

[0015] Weigh 50g powder sample, add 5ml concentrated hydrochloric acid, and bath in 60℃ water for 30min. After cooling, add 100ml of ether, shake, and stand to separate layers. Take the ether layer and spin dry below 60°C;

[0016] Weigh 2.00g~3.40g of grease, place it in a 250ml iodine bottle, add 30ml of chloroform-glacial acetic acid mixture to completely dissolve the sample. Add 1.00ml of saturated potassium iodide solution, close the cap tightly, shake it gently for 0.5min, and then place it in the dark for 3min. Take out and add 140ml of water, shake well, and immediately titrate with sodium thiosulfate standard titration solution to light yellow, add 1ml starch indicator solution, continue titration until the blue disappears as the end point, take the same amount of chloroform-glacial acetic acid solution, potassium iodide For solution and water, do the reagent blank tes...

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Abstract

The invention relates to a method for measuring the peroxide value in microcapsule products by volumetric method. That is, after the oil to be tested is extracted by breaking the wall, the peroxide in the oil reacts with potassium iodide to generate free iodine, which is titrated with sodium thiosulfate and the content is calculated. Adopt the method of the present invention to detect the peroxide value in the microcapsule product, fast and effective, the relative average deviation is less than 5%, thus it can be seen that the method of the present invention provides a reliable method for the detection of the peroxide value in the microcapsule product The method is easy to implement and can meet the needs in research and production.

Description

Technical field [0001] The invention relates to a method for measuring the peroxide value in a microcapsule product, in particular to a method for measuring the peroxide value in a microcapsule product by a volumetric method. Background technique [0002] The peroxide value is an indicator of the degree of oxidation of oils and fats and fatty acids. Peroxide value is a measure of the degree of rancidity of oil. Generally speaking, the higher the peroxide value, the more severe the rancidity. Because some small molecular substances produced by the oxidative rancidity of oils have bad effects on the human body in the body, such as the generation of free radicals, oil with too high peroxide value is not good for the body. [0003] Microencapsulation is a technology in which trace substances are encapsulated in a polymer film. It is a micro-packaging technology for storing solids, liquids, and gases. Specifically, it means that a certain target (core or inner phase) is completely cov...

Claims

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Application Information

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IPC IPC(8): G01N31/16
Inventor 宋薇
Owner PONY TESTING INT GRP SHANGHAI CO LTD
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