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Method for producing multilayer composite edible film through lamination technology

A multi-layer composite and lamination technology, which is applied in lamination, lamination devices, chemical instruments and methods, etc., can solve the problems that the characteristics cannot be fully utilized, the mechanical properties of the film, and the barrier performance are poor, so as to achieve good gloss and barrier properties. Good film-forming performance and low cost

Inactive Publication Date: 2015-12-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition to the single-component film-making of polysaccharides, proteins, lipids, etc., the edible film processed by the prior art has also developed a multi-component mixed film, but almost all of the processing methods use multi-component mixing and then drying to form a film. , still only form a single-layer film structure, which makes the characteristics of each component unable to be fully utilized, and due to the influence of the type, ratio and film thickness of the film liquid components, the mechanical properties and barrier properties of the film are poor, which limits its application
At present, there is no report on the method of preparing multilayer composite edible film by lamination method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of Membrane I

[0044] 1) Add corn modified starch into distilled water at 68°C at a mass ratio of 6:100, keep the temperature constant and fully stir for 30 minutes, and set aside.

[0045] 2) After mixing corn stalk cellulose and citric acid, add the mixture into distilled water at a mass ratio of 4:100, stir it magnetically for 15 minutes, and then homogenize it at 15000r / min for 10 minutes to make it fully swell. .

[0046] 3) Add glycerin to distilled water at a mass ratio of 3:100, stir well and set aside.

[0047] 4) Add carboxymethyl cellulose into distilled water at 65°C at a mass ratio of 2:100, stir for 30 minutes to fully dissolve it, and set aside.

[0048] 5) Mix 20 parts of gelatinized corn modified starch with 3 parts of corn stalk cellulose and citric acid mixture in parts by mass, and stir magnetically for 20 minutes;

[0049] 6) Add 4 parts of glycerin solution and 4 parts of carboxymethyl cellulose solution to the mixture, homogenize a...

Embodiment 2

[0058] This example is basically the same as Example 1, except that: the preparation of the film I: in parts by mass, 30 parts of gelatinized corn modified starch was mixed with 3 parts of corn stalk cellulose and citric acid Liquid mixing, magnetic stirring for 20min; adding 5 parts of glycerin solution and 5 parts of carboxymethyl cellulose solution to the mixed solution, 20000r / min homogenization for 10min, then ultrasonic power 800W, microwave power 150W, ultrasonic-microwave synergistic modification treatment 10 minutes, vacuum degassing at -0.090MPa for 30 minutes to obtain the membrane I mixed solution. Apply the mixed liquid of film I evenly in the film forming device, and dry it for 5 hours at 60°C to make the water content 12%, take out the film and peel off the film to obtain film I, the thickness of film I is 0.05mm, and store in a humidity of 60% , 25 ℃ conditions, standby.

Embodiment 3

[0060] It is basically the same as in Example 1, except that for the preparation of film II, zein is dissolved in an edible ethanol solution with a volume fraction of 60% at a mass ratio of 5:100, and magnetically stirred for 30 minutes to obtain zein alcohol Soluble protein solution, set aside; according to the mass fraction, take 80 parts of zein solution, add 4 parts of carboxymethyl cellulose and 3 parts of glycerin, and homogenize at 15000r / min for 10 minutes to obtain the mixed solution of membrane II; The mixed solution is evenly coated in the plexiglass film forming device, and dried at 55°C for 3 hours to make the water content 13%, take out and peel off the film to obtain film II, the thickness of film II is 0.04mm, and store in a humidity of 60%. Reserve at 25°C.

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Abstract

The invention relates to a method for producing a multilayer composite edible film through a lamination technology. The method comprises the following steps: 1, producing a film I: adding raw materials comprising corn phosphate starch or carboxymethyl starch, corn straw cellulose, citric acid, glycerin and carboxymethyl cellulose to distilled water, stirring for fully dissolving, carrying out ultrasound-microwave combined modification treatment, carrying out vacuum degassing to obtain a film I mixed solution, and uniformly coating the film I mixed solution in an organic glass film formation device to produce the film I for later use; 2, producing a film II: preparing a film II mixed solution by using raw materials comprising zein, ethanol, carboxymethyl cellulose and glycerin, and uniformly coating the film II mixed solution in the organic glass film formation device to produce the film II for later use; and 3, tiling the film II on the surface of the film I, and carrying out ultrasonic wave-microwave assisted laminating compounding with a film I mixed solution wet base between the film I and the film II as an adhesive in order to obtain the multilayer composite edible film. The tensile strength, the elongation at break, the moisture barrier property and the gas barrier property of the multilayer composite edible film are obviously improved.

Description

technical field [0001] The invention relates to a preparation method of an edible film, in particular to a method for preparing a multilayer composite edible film by a lamination method. Background technique [0002] In the prior art, the edible film is a kind of material with certain engineering properties formed after mixing, heating, casting and drying with edible biomacromolecular substances and their derivatives as the main matrix, supplemented with edible plasticizers. Properties and selectively permeable films for food and pharmaceutical packaging. As a new type of packaging material, edible film has the advantages of hygiene, safety, degradability, and pollution-free. It also has certain mechanical properties and barrier properties. It mainly ensures food quality by preventing the migration of gases, water vapor, and solutes. shelf life. [0003] In addition to the single-component film-making of polysaccharides, proteins, lipids, etc., the edible film processed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B37/12B32B9/02B32B9/04C08L89/00C08L1/28C08K5/053
CPCB32B7/12B32B9/02B32B9/047B32B37/10B32B37/12B32B2307/54B32B2307/7242B32B2307/7246B32B2307/73B32B2439/70C08J5/18C08J2303/02C08J2389/00C08J2401/28C08L3/02C08L89/00C08L2203/16C08L1/286C08K5/053C08K5/11
Inventor 孙海涛马中苏邵信儒李帅陈珊珊王亚静
Owner JILIN UNIV
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