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Whey protein/gelatin edible compound film and preparation method thereof

A technology of whey protein and composite film, which is applied in the field of food packaging materials to achieve the effects of controllable mechanical properties, low price and high nutritional value

Inactive Publication Date: 2010-06-23
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

By retrieving domestic and foreign patent documents, periodicals and other published documents (such as the Internet), the present invention has not been reported at home and abroad

Method used

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  • Whey protein/gelatin edible compound film and preparation method thereof
  • Whey protein/gelatin edible compound film and preparation method thereof
  • Whey protein/gelatin edible compound film and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0045] (1) Preparation of whey protein isolate solution: Weigh whey protein powder, add deionized water, stir for 2 hours to fully dissolve, adjust pH to 8, heat in a water bath at 80°C for 30 minutes, and cool to Room temperature, wherein the mass percent concentration of the WPI solution is 10%.

[0046] (2) Preparation of gelatin solution: Weigh gelatin powder, add deionized water, swell at room temperature for 30 minutes, heat in a 55°C water bath for 15 minutes to fully dissolve, cool to room temperature, adjust the solution to pH8, and prepare the gelatin solution The mass percent concentration is 10%.

[0047] (3) The above two solutions are mixed, wherein the mass ratio of whey protein isolate to gelatin is shown in Table 1, and then glycerin is added, wherein the quality of glycerin is 0.4 in ratio to the sum of the mass of whey protein isolate and gelatin : 1, stirred at room temperature to make it fully mixed, ultrasonically degassed to obtain a film-forming liquid...

Embodiment 2

[0055] (1) Preparation of whey protein isolate solution: Weigh whey protein powder, add deionized water, stir for 2 hours to fully dissolve, adjust pH to 7, heat in a water bath at 90°C for 20 minutes, and cool to Room temperature, wherein the mass percent concentration of the WPI solution is 8%.

[0056] (2) Preparation of gelatin solution: Weigh gelatin powder, add deionized water, swell at room temperature for 30 minutes, heat in a 35°C water bath for 30 minutes to fully dissolve, cool to room temperature, adjust the solution to pH7, and prepare the gelatin solution The mass percent concentration is 8%.

[0057] (3) The above two solutions are mixed, wherein the mass ratio of whey protein isolate to gelatin is shown in Table 2, and then glycerin is added, wherein the ratio of the quality of glycerol to the sum of the mass of whey protein isolate and gelatin is 0.5 : 1, stirred at room temperature to make it fully mixed, ultrasonically degassed to obtain a film-forming liqu...

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Abstract

The invention discloses a whey protein / gelatin edible compound film which belongs to the field of food-packaging materials. The compound film is made from whey protein solution and gelatin solution which are added with plasticizer and blended, wherein the weight ratio between whey protein and gelatin is 1-99:99-1. The thickness of the edible compound film is 80 Mu m to 110 Mu m. The weight percentage concentration of the whey protein solution is 8 percent to 10 percent, and the weight percentage concentration of the gelatin solution is 8 percent to 10 percent. The invention also discloses a preparation method for the compound film. The compound film has a high nutritive value and is cheap, and the mechanical properties of the film can be controlled by regulating the compound proportion of whey protein and gelatin in order to adapt to packages for different purposes.

Description

technical field [0001] The invention belongs to the field of food packaging materials, in particular to a whey protein / gelatin edible composite film and a preparation method thereof. Background technique [0002] Packaging is an indispensable part of food processing and distribution. Its main function is to preserve products and provide convenience to consumers during use. Traditional plastic packaging materials are cheap, easy to process, and widely used, but they are prone to harmful gases and odors, and cannot be degraded by microorganisms. After use, they can only be discarded as waste, causing "white pollution", destroying the ecological environment, and affecting human beings. healthy. With the continuous enhancement of people's awareness of environmental protection in recent years, alternative products of "green packaging" materials that conform to the principle of sustainable development are favored. There have been many reports on the research progress of related s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/46C08L89/00
Inventor 冷小京蒋艳枫任发政
Owner CHINA AGRI UNIV
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