Edible film forming liquid, preparation method thereof, edible film and preparation method thereof

A film-forming liquid and film-making machine technology, applied in the field of packaging materials, can solve the problems of long preparation time and low production efficiency, and achieve the effects of abundant sources, improved film-forming speed, and large-scale industrial production.

Inactive Publication Date: 2017-10-17
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of edible film formulations, but all of them have the problem of too long preparation time. Generally, only the step of coating and film formation

Method used

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  • Edible film forming liquid, preparation method thereof, edible film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Take 4 g of sodium alginate and add a certain amount of distilled water, and mechanically stir at 60° C. for 30 minutes to obtain a sodium alginate hydrogel with a mass fraction of 4% for use.

[0032] (2) Add 20 g of fish gelatin into a certain amount of distilled water, stir for 10 minutes to dissolve, and obtain a fish gelatin solution with a mass fraction of 20%.

[0033] (3) 500 mL of sodium alginate hydrogel with a mass fraction of 4% and 500 mL of isinglass aqueous solution with a mass fraction of 20% were blended, and 20 mL of glycerin was added and stirred at 60° C. for 30 minutes to obtain a total dry matter of 12% edible film-forming fluid, which is a pseudoplastic fluid. Fish gelatin is evenly distributed in the network structure formed by sodium alginate hydrogel, and a certain force is also formed between sodium alginate molecules and fish gelatin molecules, so that the film-forming liquid system remains stable. Glycerin is added as a plasticizer to m...

Embodiment 2

[0049] (1) Add 10 g of carboxymethyl chitosan to a certain amount of distilled water, and mechanically stir at 60° C. for 30 minutes to obtain a carboxymethyl chitosan hydrogel with a mass fraction of 10% for later use.

[0050] (2) Add 16 g of fish gelatin into a certain amount of distilled water, stir for 10 minutes to dissolve, and obtain a fish gelatin solution with a mass fraction of 20%.

[0051](3) 500mL mass fraction of 10% carboxymethyl chitosan hydrogel and 500mL mass fraction of 16% fish gelatin aqueous solution were blended, and after adding 20mL glycerin, stirred at 60°C for 30 minutes to obtain total dry An edible film-forming liquid with a substance content of 13%, the edible film-forming liquid is a pseudoplastic fluid.

[0052] (4) Place the edible film-forming liquid above in a vacuum environment for degassing for 30 minutes.

[0053] (5) Preheat the heating zone of the steel belt casting machine, pour the edible film film-forming liquid into the film-making...

Embodiment 3

[0058] (1) Add 2 g of sodium alginate and 4 g of carboxymethyl chitosan to a certain amount of distilled water, and mechanically stir for 30 minutes at 60° C. to obtain a mixed hydrogel with a mass fraction of 6%.

[0059] (2) Add 20 g of fish gelatin into a certain amount of distilled water, stir for 10 minutes to dissolve, and obtain a fish gelatin solution with a mass fraction of 20%.

[0060] (3) 500mL mass fraction of 6% hydrogel and 500mL mass fraction of 20% fish gelatin aqueous solution were blended, and after adding 20mL of glycerin, stirred at 60°C for 15 minutes to obtain a hydrogel with a dry matter content of 13%. The edible film-forming liquid is a pseudoplastic fluid.

[0061] (4) Place the edible film-forming liquid above in a vacuum environment for degassing for 30 minutes.

[0062] (5) Preheat the heating zone of the drum casting machine, pour the edible film-forming liquid into the film-making tank of the drum casting machine, and cast the edible film-formi...

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Abstract

The invention discloses edible film forming liquid, a preparation method thereof, an edible film and a preparation method thereof. The edible film forming liquid comprises 8-22 parts by mass of solute and 78-92 parts by mass of distilled water. The solute comprises the following components: algal polysaccharides, fish collagen protein and glycerinum. The raw materials are natural and non-toxic; sources of the raw materials are abundant; and the prepared edible film can be applied to food packaging and medicine and cosmetic packaging. The ratio of the various components is researched, the novel method for preparing the edible film forming liquid and the novel film preparation method are provided, the film forming speed of the edible film is greatly increased, and requirements of large-scale industrialized production can be met. The tensile strength, the breaking elongation and the water vapor penetration coefficient of the edible film can meet requirements of food, medicine and cosmetic packaging to packaging materials. In addition, the edible film can be stably stored in an environment with the humidity of 30%-80%.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to an edible film-forming liquid and a preparation method thereof, and an edible film and a preparation method thereof. Background technique [0002] In recent years, with the enhancement of people's awareness of environmental protection and the improvement of food quality requirements, the use of edible film packaging to replace plastic packaging has become a new trend in the development of food packaging. Edible films are easily degraded by microorganisms in the natural environment, which can reduce environmental pollution. With food raw materials as the base material, the edible film is safe, non-toxic and edible, and can be widely used in the fields of food packaging, pharmaceutical packaging and cosmetics, especially children's food, convenience food, beverage or pharmaceutical granule packaging and skin care products, etc. In product packaging. [0003] Edible fi...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08L5/04C08L5/08C08L5/00C08L5/12C08K5/053C08J5/18B65D65/46
CPCB65D65/463C08J5/18C08J2305/12C08J2389/00C08J2405/00C08J2405/04C08J2405/08C08L5/12C08L89/00C08L2203/16C08L2205/02C08L2205/03C08L2205/035C08L5/04C08L5/08C08L5/00C08K5/053
Inventor 王喆户帅锋王怀雨
Owner SHENZHEN INST OF ADVANCED TECH
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