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Method for preparing collagen film

A technology of collagen film and raw materials, which is applied in the field of food-grade packaging film, can solve the problems of collagen film sticking to the wall, the decline of film mechanical properties, and the inability to form a film, so as to promote industrial production, shorten drying time, and prevent unrevealing. film effect

Active Publication Date: 2012-06-20
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong heat sensitivity of collagen itself, the high viscosity of the aqueous solution, and the high latent heat of evaporation, the formed collagen film is easy to stick to the wall, making it difficult to remove the film.
Moreover, too high heating temperature will also cause bubbles in the collagen solution and breakage of the collagen polypeptide chain, resulting in a decrease in the mechanical properties of the film and even failure to form a film.
These problems have hindered the large-scale industrial production of food-grade collagen membranes, so most of the applied research on collagen membranes is still in the laboratory stage.

Method used

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  • Method for preparing collagen film
  • Method for preparing collagen film
  • Method for preparing collagen film

Examples

Experimental program
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Embodiment 1

[0025] 1) Preparation of collagen membrane liquid: 1kg of tilapia skin contains 25% (v / v) alcohol, 1.5% (v / v) H in 3L 2 O 2 , 0.05M NaOH alkaline solution, soaked at room temperature for 12h, rinsed with water to neutrality, then stirred and soaked in 6L of 0.05M hydrochloric acid aqueous solution for 2h, rinsed with water to neutrality, and then extracted with 80 ℃ hot water for 1h Prepare an aqueous collagen solution. Add 2g of glycerol to 200ml of fish skin collagen aqueous solution with a protein content of 5% (w / v) and mix well;

[0026] 2) Preparation of the hydrophobic substance emulsion: add 0.3 g of beeswax and 0.1 g of sucrose fatty acid ester with an HLB value of 9 to 100 ml of distilled water, and after it is completely dissolved by heating in a water bath at 80° C., use a tissue masher (15000 rpm) for homogenization. Emulsify for 1.5min to prepare an emulsion;

[0027] 3) Preparation of protein film: After mixing 200ml of prepared collagen film solution and 100...

Embodiment 2

[0029] 1) Preparation of collagen membrane liquid: 1kg of tilapia skin contains 25% (v / v) alcohol, 1.5% (v / v) H in 3L 2 O 2 , 0.05M NaOH alkaline solution, soaked at room temperature for 12h, rinsed with water to neutrality, then stirred and soaked in 6L of 0.05M hydrochloric acid aqueous solution for 2h, rinsed with water to neutrality, and then extracted with 80 ℃ hot water for 1h Prepare an aqueous collagen solution. Add 2g polyethylene glycol to 200ml of fish skin collagen aqueous solution with a protein content of 5% (w / v) and mix well;

[0030] 2) Preparation of the hydrophobic substance emulsion: add 0.3 g palmitic acid and 0.1 g sucrose fatty acid ester with an HLB value of 7 to 100 ml of distilled water, and after it is completely dissolved by heating in a 70°C water bath, use a tissue masher (15000 rpm) to carry out Homogeneous emulsification for 1.5min to prepare an emulsion;

[0031] 3) Preparation of protein film: After mixing 200ml of prepared collagen film so...

Embodiment 3

[0033] 1) Preparation of collagen membrane solution: 1.5kg of tilapia scales are made of 4.5L containing 25% (v / v) alcohol, 1.5% (v / v) H 2 O 2 , 0.05M NaOH alkaline solution, soaked for 12h at room temperature, rinsed with water until neutral, then soaked with 9L of 0.05M hydrochloric acid aqueous solution for 2h, rinsed with water until neutral, and then extracted with 80 ℃ hot water for 1h Prepare an aqueous collagen solution. Add 6g of glycerol to 200ml of fish scale skin collagen aqueous solution with a protein content of 10% (w / v) and mix well;

[0034] 2) Preparation of the hydrophobic substance emulsion: add 1 g of beeswax and 0.35 g of sucrose fatty acid ester with an HLB value of 9 to 100 ml of distilled water, and after it is completely dissolved by heating in a 90°C water bath, use a tissue masher (25000 rpm) to homogenize Emulsify for 3 minutes to prepare an emulsion;

[0035] 3) Preparation of protein membrane: After mixing 200ml of prepared collagen membrane s...

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Abstract

The invention relates to a method for preparing a collagen film, relating to a food packaging film. The method comprises the following steps of: immersing the raw materials, such as fish skin, fish scales, fish bones or fish muscles and the like, by using an alkaline solution, after rinsing the raw materials to be neutral by using clear water, immersing the raw materials by using a hydrochloric acid aqueous solution, rinsing the raw materials to be neutral by using clear water again, then extracting in hot water, and mixing after adding an edible plasticizer into the obtained collagen aqueoussolution so as to obtain a collagen film solution; after heating and dissolving an aqueous solution containing an edible hydrophobic substance and an edible emulsifier, carrying out homogenization and emulsification treatment by utilizing a tissue pounding machine, and preparing a hydrophobic substance emulsion; and, after mixing the modulated collagen film solution and the hydrophobic substance emulsion, carrying out homogenization and emulsification treatment, after defoaming, uniformly coating the mixture on organic silicon resin, after drying, cooling the organic silicon resin to room temperature, and stripping the film so as to obtain the collagen film.

Description

technical field [0001] The invention relates to a food-grade packaging film, in particular to a kind of fish collagen derived from fish bones, fish skins, fish scales and fish tendons as raw materials. Preparation method of dried collagen membrane. Background technique [0002] At present, in addition to a part of paper, the materials used in food packaging use a large number of plastic products. However, since plastics are not easy to decompose and rot in nature, and incineration will produce toxic gases such as dioxins, plastic wastes have brought serious harm to the ecological environment. In addition, in the process of food processing and storage, some additives, plasticizers and other solvents remaining in plastics may migrate from plastic packaging bags to food, resulting in changes in product flavor and even toxic side effects. Therefore, with the improvement of people's requirements for food quality and the enhancement of environmental protection awareness, it has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L89/00C08L91/06C08K5/053C08K5/09B65D65/46
Inventor 翁武银曹敏杰刘光明苏文金
Owner JIMEI UNIV
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