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Whey protein edible single/double-layered compound film and preparation method thereof

A whey protein, double-layer composite technology is applied in the field of food packaging materials to achieve the effects of increasing bioavailability, good film-forming properties and high nutritional value

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

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By searching domestic and foreign patent documents, journals and other published documents, the present invention has not been reported at home and abroad

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  • Whey protein edible single/double-layered compound film and preparation method thereof
  • Whey protein edible single/double-layered compound film and preparation method thereof
  • Whey protein edible single/double-layered compound film and preparation method thereof

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Experimental program
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Embodiment Construction

[0021] Measurements of film thickness, tensile properties, water vapor transmission coefficient, water content and solubility, as well as light transmittance and transparency in the following examples are as follows:

[0022] (1) Measurement method of film thickness: measure the thickness with a digital micrometer.

[0023] (2) Determination method of tensile properties

[0024] With reference to ASTM (1995) method, the tensile properties were measured using TMS-Pro texture analyzer, wherein the tensile speed was 1 mm / s. Tensile strength (TS, MPa) is calculated according to formula (1):

[0025] TS = F t L × W - - - ( 1 )

[0026] In the formula, F t ——Maximum pulling force (N)

[0027] L—thickness of the film sample (mm)

[0028] W——width of film sample (mm)

[0029] E...

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Abstract

The invention discloses a whey protein edible single / double-layered compound film and a preparation method thereof, which belong to the field of food package materials. The single-layered compound film is made of whey protein solution and casein phosphopeptide solution which are added with plasticizer and blended, wherein the weight ratio between casein phosphopeptide and whey protein is 1 percent to 8 percent. The first layer of the double-layered compound film is the whey protein edible single-layered compound film; the second layer covers the first layer, and the material is the casein phosphopeptide solution with the weight percentage concentration of 20 percent. Since the compound film contains casein phosphopeptide, the bioavailability of calcium in the whey protein edible film, and the additive amount of calcium ions in the double-layered compound film is increased from 1 percent (Ca / WPI, w / w), as in the calcium-enriched whey film, to 28.34 percent (Ca / WPI, w / w).

Description

technical field [0001] The invention belongs to the field of food packaging materials, in particular to a whey protein / casein phosphopeptide edible single-layer composite film and a double-layer composite film and a preparation method thereof. Background technique [0002] Although traditional packaging materials are cheap, they are easy to cause environmental pollution and endanger human health. As people pay more and more attention to environmental and safety issues, traditional paper packaging and plastic packaging materials have been gradually replaced by "green packaging". Edible film, on the other hand, provides an alternative packaging without the cost of environmental protection, and is a safe, environmentally friendly biodegradable material. Therefore, the development of edible packaging made of natural biological materials has become a major trend in the development of science and technology in the world food industry. At present, there are more edible films made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08K5/521B65D65/46B65D65/40B32B9/00
Inventor 冷小京刘飞李彬王利娜蒋艳枫李艳霞任发政
Owner CHINA AGRI UNIV
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