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Preparation method of water insoluble fish gelatin protein film

A gelatin protein, water insoluble technology, applied in the direction of flexible covering, transportation and packaging, packaging, etc., can solve the problem of weak water resistance of gelatin protein film, and achieve the effect of simple preparation process

Active Publication Date: 2022-02-22
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can improve the water resistance of the gelatin protein film to a certain extent, the water resistance of the gelatin protein film is still relatively weak.

Method used

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  • Preparation method of water insoluble fish gelatin protein film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 0.6L of pure water to 200g of tilapia skin gelatin protein, after swelling at room temperature, heat it in a 60°C water bath for 3 hours to dissolve it, add 40g of glycerin and 2g of calcium chloride, mix well, defoam and prepare fish Skin gelatin film liquid; preheat the casting knife to 60°C, use it to evenly coat the prepared fish skin gelatin film liquid on the silicone resin belt, and dry it to form a fish skin with a thickness of about 50 microns gelatin film;

[0024] After dispersing 100g of sodium alginate with 2L of pure water, heat it in a 60°C water bath for 1 hour to dissolve it, add 20g of glycerin, mix evenly, and defoam to prepare a sodium alginate film solution, and use a casting knife to cast the prepared seaweed The sodium alginate film liquid is evenly coated on the surface of the fish skin gelatin protein film, and a sodium alginate-fish skin gelatin protein composite film with a thickness of about 60 microns is formed by drying;

[0025] The d...

Embodiment 2

[0027] Add 0.8L of pure water to 200g of silver carp skin gelatin protein, after swelling at room temperature, heat it in a 70°C water bath for 2 hours to dissolve, add 50g of glycerin and 6g of calcium chloride, mix well, and defoam to prepare fish skin Gelatin protein film liquid; preheat the casting knife to 60°C, use it to evenly coat the prepared fish skin gelatin protein film liquid on the silicone resin belt, and dry it to form fish skin gelatin with a thickness of about 60 microns Protein film;

[0028] After dispersing 100g of sodium alginate with 3L of pure water, heat it in a 70°C water bath for 2 hours to dissolve it, add 25g of glycerin, mix evenly, and defoam to prepare a sodium alginate film solution, and use a casting knife to cast the prepared seaweed The sodium alginate film liquid is evenly coated on the surface of the fish skin gelatin protein film, and a sodium alginate-fish skin gelatin protein composite film with a thickness of about 70 microns is formed...

Embodiment 3

[0031] Add 1L of pure water to 200g of cod skin gelatin protein, after swelling at room temperature, heat it in a water bath at 80°C for 1 hour to dissolve it, add 60g of glycerin and 10g of calcium chloride, mix well, defoam and prepare fish skin gelatin protein Film solution: Preheat the casting knife to 60°C, use it to evenly coat the prepared fish skin gelatin film on the silicone resin belt, and dry it to form a fish skin gelatin film with a thickness of about 70 microns ;

[0032] After dispersing 100g of sodium alginate with 4L of pure water, heat it in a water bath at 80°C for 1 hour to dissolve it, add 30g of glycerin, mix evenly, and defoam to prepare a sodium alginate film liquid, and use a casting knife to cast the prepared seaweed The sodium alginate film liquid is evenly coated on the surface of the fish skin gelatin protein film, and a sodium alginate-fish skin gelatin protein composite film with a thickness of about 80 microns is formed by drying;

[0033] The...

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Abstract

The invention discloses a method for preparing an insoluble water-soluble fish gelatin protein film. The technical process includes: pouring sodium alginate film liquid on the fish gelatin film containing calcium chloride, drying to form a film, and then using a pressing method to make the film The two materials are tightly compounded together, and then placed at a temperature of 20-40 ° C and a relative humidity of 50-60% for a period of time to prepare a water-insoluble fish gelatin protein film product. The technical process of the invention is simple, and the large-scale industrial production of the fish gelatin protein film can be realized, and the water resistance of the protein film can be improved, thereby expanding the application range of the fish gelatin protein film.

Description

technical field [0001] The invention relates to a method for preparing a food-grade packaging film, which belongs to the technical field of food packaging material production, in particular to a method for preparing a water-insoluble fish gelatin protein film. Background technique [0002] With the strengthening of people's awareness of ecological environment protection, the use of natural polymer materials to prepare edible films to replace traditional plastic films has attracted increasing attention. Among them, the use of fish gelatin extracted from fish processing waste to prepare edible films has become a research hotspot. However, due to the high content of hydrophilic amino acids in gelatin protein molecules, gelatin protein films have poor water resistance and are sensitive to environmental humidity. Therefore, both the food to be packaged and the packaging environment are required to be in a dry state, which limits the scope of application of the gelatin protein edi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08J5/18C08L89/00C08L5/04C08K5/053C08K3/16B65D65/46
CPCB65D65/463C08J5/18C08K3/16C08K5/053C08K2003/162C08J2405/04C08J2389/00C08L2203/16C08J7/0427
Inventor 翁武银徐叶琼
Owner JIMEI UNIV
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