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A kind of strengthened vegetable protein membrane material and preparation method thereof

A plant protein and film material technology, applied in the direction of flexible coverings, packaging, wrapping paper, etc., can solve the problems of poor stretchability and ductility, brittle and fragile protein film, easy to absorb moisture and soften, etc., to achieve the goal of packaging Strong, increase density, reduce brittle effect

Active Publication Date: 2014-10-29
JILIN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a strengthened plant protein film material and its preparation method to solve the current problems that the protein film is brittle and fragile, has poor stretchability and ductility, is easy to absorb moisture and soften, and is rotten and deteriorated.

Method used

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  • A kind of strengthened vegetable protein membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of composite enhancer

[0024] Oleic acid 30g / 100g, sorbitol 35g / 100g, galactose 35g / 100g, under the condition of 20 ℃, shear mixing homogenization treatment, shear mixing speed 15r / min, time 3min.

[0025] (2) Plant protein modification treatment

[0026] Pure and impurity-free corn protein and soybean protein were denatured by heat and humidity at 105°C for 10 minutes, respectively, and purified water was added at a ratio of 1:4 by mass to water, and ground and homogenized to obtain a slurry that could completely pass through a sieve with an aperture of 75 μm. Dried to a water content of 5g / 100g, pulverized to obtain zein fine powder and soybean protein fine powder with a particle size of less than 61 μm, taking 85g / 100g of zein fine powder and 15g / 100g of soybean protein fine powder and mixing evenly to obtain a composite vegetable protein fine powder for later use;

[0027] (3) Preparation of enhanced plant protein film

[0028] Take the compound v...

Embodiment 2

[0030] (1) Preparation of composite enhancer

[0031] Oleic acid 40g / 100g, sorbitol 30g / 100g, galactose 30g / 100g, under the condition of 30 ℃, shear mixing homogenization treatment, shear mixing speed 30r / min, time 6min;

[0032] (2) Plant protein modification treatment

[0033] Pure and impurity-free corn protein and soybean protein were denatured by heat and humidity at 120°C for 5 minutes, respectively, and purified water was added at a ratio of 1:4 by mass to water, and ground and homogenized to obtain a slurry that could completely pass through a sieve with an aperture of 75 μm. Dried to a water content of 10g / 100g, pulverized to obtain fine corn protein powder and soybean protein fine powder with a particle size of less than 61 μm, take 95g / 100g of corn protein fine powder and 5g / 100g of soybean protein fine powder and mix evenly to obtain a composite vegetable protein fine powder for later use ;

[0034] (3) Preparation of enhanced plant protein film

[0035] Take th...

Embodiment 3

[0037] (1) Preparation of composite enhancer

[0038] Oleic acid 35g / 100g, sorbitol 32.5g / 100g, galactose 32.5g / 100g, under the condition of 25 ℃, shear mixing homogenization treatment, shear mixing speed 17.5r / min, time 4.5min;

[0039] (2) Plant protein modification treatment

[0040]Pure and impurity-free corn protein and soybean protein were denatured at 112.5°C for 7.5 minutes, respectively, and purified water was added according to the mass-to-water ratio of 1:4, and they were ground and homogenized to obtain a slurry that could completely pass through a sieve with an aperture of 75 μm. , dried to a water content of 7.5g / 100g, and crushed to obtain fine corn protein powder and fine soybean protein powder with a particle size of less than 61 μm; take 90 g / 100 g of fine corn protein powder and 10 g / 100 g of soybean protein fine powder and mix evenly to obtain a fine compound vegetable protein powder powder spare;

[0041] (3) Preparation of enhanced plant protein film

...

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Abstract

The invention relates to an enhanced vegetable protein membrane material and a preparation method thereof, and belongs to the technical field of packaging materials for food. The method comprises the following steps: fully mixing oleic acid, sorbitol and galactose according to a certain ratio and method, using the mixed liquor as an enhancer, and using ethanol as a solvent and a dry solution; and adding appropriate proportion of corn protein, soy protein and food grade of polyethylene pyrrolidone, homogenizing, making membranes, and drying to prepare the vegetable protein membrane material. The preparation process is simple and is easily operated, and the prepared vegetable protein membrane material has good toughness and tension resistance, has no potential safety hazards and can be used for direct package of food. The method has mild preparation conditions, does not produce wastes, and does not pollute the environment.

Description

technical field [0001] The invention belongs to the technical field of edible food packaging materials and preparation methods thereof. Background technique [0002] With the development of social economy and the enhancement of people's awareness of environmental protection, serious ecological problems and food safety problems caused by chemically synthesized packaging materials have been paid more and more attention. In particular, plastic packaging is used in a huge amount, its chemical properties are stable, and it is difficult to degrade. Its waste pollution has become a worldwide environmental protection problem. In addition, the chemical components in plastic packaging materials will migrate into food during food storage, causing secondary pollution to food and reducing the food safety of food. The plant protein film has excellent oxygen resistance and good mechanical properties because the film formed is uniform and transparent; it can be degraded in nature and has n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L89/00C08L39/06C08K5/09C08K5/053C08K5/1545C08J3/28B65D65/46
Inventor 王大为刘婷婷张艳荣
Owner JILIN AGRICULTURAL UNIV
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