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Determination method for fat peroxide number in infant formula milk powder

A technology of infant formula and peroxide value, which is applied in the direction of chemical analysis by titration method, can solve the problems of long operation time and low detection accuracy of fat peroxide value, and achieve high detection results and effective control of secondary oxidation , the effect of simple measurement

Active Publication Date: 2017-06-30
BRIGHT DAIRY & FOOD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the defects of low detection accuracy and long operation time of fat peroxide value in infant milk powder in the prior art, the present invention provides a method for measuring fat peroxide value in infant formula milk powder, and the purpose of realization is to make the determination The peroxide value has high accuracy, and the determination method is simple and fast

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  • Determination method for fat peroxide number in infant formula milk powder
  • Determination method for fat peroxide number in infant formula milk powder
  • Determination method for fat peroxide number in infant formula milk powder

Examples

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Embodiment 1

[0041] Embodiment 1: a method for measuring fat peroxide value in infant formula milk powder disclosed by the present invention comprises the following steps, (1) primary extraction of fat in infant formula milk powder: after fully dissolving infant formula milk powder in water , then add the extractant, at room temperature through magnetic stirring, ultrasonication, centrifugation, collect the upper organic phase to obtain the organic phase A;

[0042] (2) Secondary extraction of fat in infant formula milk powder: uniformly mix the precipitate obtained after centrifugation in step (1) with water, then add the extraction agent again, and then collect the upper layer by magnetic stirring, ultrasonication, and centrifugation at room temperature Organic phase obtains organic phase B;

[0043] (3) Fine extraction of fat: After mixing the organic phase A and organic phase B obtained in steps (1) and (2), add anhydrous sodium sulfate to dry and filter, then take the filtrate and rotar...

Embodiment 2

[0054] Embodiment 2: the assay method of fat peroxide value in a kind of infant formula milk powder disclosed by the present invention, comprises the following steps, (1) primary extraction of fat in infant formula milk powder: after fully dissolving the infant formula milk powder in water , then add the extractant, at room temperature through magnetic stirring, ultrasonication, centrifugation, collect the upper organic phase to obtain the organic phase A;

[0055] (2) Secondary extraction of fat in infant formula milk powder: uniformly mix the precipitate obtained after centrifugation in step (1) with water, then add the extraction agent again, and then collect the upper layer by magnetic stirring, ultrasonication, and centrifugation at room temperature Organic phase obtains organic phase B;

[0056] (3) Fine extraction of fat: After mixing the organic phase A and organic phase B obtained in steps (1) and (2), add anhydrous sodium sulfate to dry and filter, then take the filt...

Embodiment 3

[0078] Embodiment three: the assay method of fat peroxide value in a kind of infant formula milk powder disclosed by the present invention, comprises the following steps, (1) one-time extraction of fat in infant formula milk powder: after fully dissolving the infant formula milk powder in water , then add the extractant, at room temperature through magnetic stirring, ultrasonication, centrifugation, collect the upper organic phase to obtain the organic phase A;

[0079] (2) Secondary extraction of fat in infant formula milk powder: uniformly mix the precipitate obtained after centrifugation in step (1) with water, then add the extraction agent again, and then collect the upper layer by magnetic stirring, ultrasonication, and centrifugation at room temperature Organic phase obtains organic phase B;

[0080] (3) Fine extraction of fat: After mixing the organic phase A and organic phase B obtained in steps (1) and (2), add anhydrous sodium sulfate to dry and filter, then take the...

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Abstract

The invention discloses a determination method for fat peroxide number in infant formula milk powder. The determination method comprises: (1) carrying out first extraction on fat in infant formula milk powder to obtain an organic phase A; (2) carrying out second extraction on the fat in the infant formula milk powder: uniformly mixing the precipitate obtained after the centrifugation of the material obtained in the step (1) and water, extracting, and collecting the upper layer organic phase to obtain an organic phase B; (3) carrying out fine extraction on the fat: mixing the organic phase A and the organic phase B obtained in the steps (1) and (2), and carrying out rotary evaporation to obtain a fat extract; and (4) quantitating the fat peroxide value: i) carrying out fat titration; and ii) calculating the fat peroxide value by using the use amount of a sodium thiosulfate standard solution consumed for the fat titration in the step (1) and the use amount of a blank control sodium thiosulfate standard solution. With the determination method of the present invention, the high extraction of the fat from the infant formula milk powder is achieved, the accuracy of the peroxide value detection result is high, and the secondary oxidation of the fat can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of infant formula milk powder, in particular to a method for measuring fat peroxide value in infant formula milk powder. Background technique [0002] Infant formula milk powder is the best substitute for breast milk. In order to bring the growth and development of infants a similar effect to breast milk, infant formula milk powder improves the protein composition, fat composition, carbohydrate composition, mineral composition, Vitamin composition and trace immune substances to make infant formula milk powder closer to breast milk. Breastmilkization of infant formula to make it contain 20-32% fat, of which the content of unsaturated fat accounts for about 50% of the total fat, especially unsaturated fats such as DHA, ARA, linoleic acid, linolenic acid and palmitic acid Fatty acids readily react chemically with oxygen. The result of the oxidation of these unsaturated fatty acids is the production of peroxid...

Claims

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Application Information

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IPC IPC(8): G01N31/16
Inventor 贾宏信刘振民徐致远苏米亚陈文亮齐晓彦蒋雯瑶
Owner BRIGHT DAIRY & FOOD
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