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A kind of preparation method of edible collagen composite film

A technology of collagen and fish skin collagen, applied in the direction of flexible coverings, packaging, wrapping paper, etc., can solve the problem of less collagen and chitosan films, and achieve simple process flow, good market prospects, and high safety Effect

Inactive Publication Date: 2011-12-14
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few reports about the composite collagen chitosan film at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] (2) Preparation of casting solution: Dissolve collagen in distilled water and stir evenly at 30°C to 60°C to make an aqueous collagen solution with a weight ratio of 2% to 6%; add chitosan and its derivatives Dissolve in 1%-5% dilute acetic acid, stir evenly at 30°C-60°C, and make a chitosan dilute solution with a weight ratio of 0.5%-5%. Composite collagen aqueous solution and chitosan dilute solution, add glycerin accounting for 25% to 50% of the weight of collagen, chitosan and their derivatives as a plasticizer, continue to stir for 30min to 60min, and then use a defoamer for degassing Edible film casting solution is prepared after soaking. Among them, the aqueous solution of fish skin collagen and dilute chitosan solution are compounded at a volume ratio of 3:1 to 1:3.

[0022] (3) Preparation of collagen composite film: evenly pour 6ml of the prepared casting solution into a 12cm×8cm×1cm silicone resin frame, dry it in an oven at 22°C for 24 hours, and then peel ...

Embodiment 1

[0025] 1. Collagen extraction: Take 250g silver carp waste skin, cut it into pieces, wash it, and use 2.5L of 0.01M NaOH-1%H at 20°C 2 o 2 The solution was stirred and soaked for 12 hours, washed with water until neutral; then, stirred and soaked with 2.5L of 0.05M acetic acid aqueous solution at room temperature for 2 hours, then washed with water until neutral; then leached with 2.5L of 30℃ hot water for 12 hours , and then centrifuged at 18 000×g to remove insoluble matter, and freeze-dried to obtain fish skin collagen.

[0026] 2. Preparation of film casting solution: Dissolve 2.0g fish skin collagen in 100ml distilled water, stir evenly at 30°C to make a 2% collagen aqueous solution by weight; dissolve 0.5g chitosan in 100ml 1 % dilute acetic acid, stirred evenly at 30°C to make a chitosan dilute solution with a weight ratio of 0.5%. Combine the aqueous solution of fish skin collagen and dilute chitosan solution at a volume ratio of 3:1, and add glycerin accounting for ...

Embodiment 2

[0029] 1. Collagen extraction: Take 500g grass carp waste skin, cut it into pieces, wash it, and use 7.5L 0.05M NaOH-1%H at 10°C 2 o 2 The solution was stirred and soaked for 18 hours, washed with water until neutral; then, soaked in 7.5L of 0.2M citric acid aqueous solution at room temperature for 4 hours, then washed with water until neutral; then leached with 5L of hot water at 45°C for 10 hours, and then, Centrifuge at 18 000×g to remove insoluble substances, and freeze-dry to obtain fish skin collagen.

[0030]2. Preparation of casting solution: Dissolve 3.0g fish skin collagen in 100ml distilled water and stir evenly at 45°C to make a 4% collagen aqueous solution by weight; dissolve 2.0g chitosan in 100ml 3 % dilute acetic acid, stir evenly at 45°C to make a chitosan dilute solution with a weight ratio of 2%. Compound the aqueous solution of fish skin collagen and chitosan at a volume ratio of 1:1, and add glycerin accounting for 30% of the total weight of fish skin co...

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PUM

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Abstract

The invention discloses a preparation method of an edible collagen composite film, which uses fish skin collagen, chitosan and derivatives thereof as main raw materials, dissolves collagen in distilled water to prepare a collagen aqueous solution, and mixes chitosan And its derivatives are dissolved in dilute acetic acid to make a dilute solution, and then the two solutions are compounded, and a plasticizer is added, and finally the edible collagen composite film is formed into a film. The film has good biocompatibility, degradability and good fresh-keeping function, and its main raw materials and auxiliary materials are edible substances with sufficient sources.

Description

technical field [0001] The invention relates to a method for preparing a collagen composite film, in particular to a method for preparing an edible collagen composite film. Background technique [0002] my country is a big country with abundant aquatic resources. In 2009, the total amount of aquatic products in my country reached 51.2 million tons. In 2010, the total output of aquatic products will reach 53.5 million tons, a year-on-year increase of 4.6%. However, at present, the processing of aquatic products in my country is still dominated by rough processing, and the proportion of intensively processed products is not high. During the processing of fish, a large amount of leftovers such as fish skin, fish bones, and fish scales are produced, accounting for about 40% to 55% of the raw fish. Fish skin is rich in protein and various trace elements, and its protein is mainly macromolecular collagen and mucopolysaccharide components, and collagen accounts for about 80% of c...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L89/00C08L5/08C08K5/053B65D65/46
Inventor 张其清伍久林陈善飞李建华陈景帝
Owner FUZHOU UNIVERSITY
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