A kind of preparation method of bamboo leaf flavone modified fish scale gelatin-chitosan composite film

A technology of fish scale gelatin and bamboo leaf flavonoids is applied in the field of preparation of fish scale gelatin-chitosan composite films modified by bamboo leaf flavonoids, which can solve the problems of undisclosed fish scale gelatin-chitosan composite films modified by bamboo leaf flavonoids, It achieves the effects of superior UV barrier performance, slowing down lipid oxidation and deterioration, and simple processing technology

Active Publication Date: 2019-08-27
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant research content about the preparation method of fish scale gelatin-chitosan composite film modified by bamboo leaf flavonoids at home and abroad

Method used

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  • A kind of preparation method of bamboo leaf flavone modified fish scale gelatin-chitosan composite film
  • A kind of preparation method of bamboo leaf flavone modified fish scale gelatin-chitosan composite film

Examples

Experimental program
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Embodiment 1

[0027] A kind of preparation method of bamboo leaf flavone modified fish scale gelatin-chitosan composite film, concrete steps are as follows:

[0028] (1) Dissolving chitosan: dissolving chitosan in a glacial acetic acid solution with a concentration of 1 wt%, stirring magnetically for 24 hours overnight to fully dissolve, and then using a 1um pore-diameter filter to remove insoluble matter to obtain a chitosan solution; The mass concentration of chitosan in polysaccharide solution is 1.5%;

[0029] (2) Fish scale gelatin dissolution: Dissolve tilapia scale gelatin in water for 18 minutes after absorbing water and swelling for 18 minutes, then dissolve it in a water bath at 45°C for 22 minutes to obtain a fish scale gelatin solution; the mass concentration of fish scale gelatin in the fish scale gelatin solution is 2% ;

[0030] (3) Adding bamboo leaf flavonoids: adding bamboo leaf flavonoids to the fish scale gelatin solution in an amount of 0.2% of the mass of tilapia scal...

Embodiment 2

[0035] With above-mentioned embodiment 1, its difference is:

[0036] In step (2), the tilapia scale gelatin was dissolved in water for 20 minutes after absorbing water to swell, and then dissolved in a water bath at 50°C for 20 minutes to obtain a fish scale gelatin solution;

[0037] In step (3), bamboo leaf flavonoids are added to the fish scale gelatin solution in an amount of 0.4% of the tilapia scale gelatin mass, and magnetically stirred for 20 minutes to mix evenly to obtain a fish scale gelatin mixture;

[0038] In step (4), mix the chitosan solution and the fish scale gelatin mixture at a volume ratio of 1:1, stir magnetically for 18-22 minutes to mix evenly, add a certain amount of glycerin, and stir magnetically for 15 minutes to mix evenly to obtain a film-forming liquid ;

[0039] In step (5), the film-forming solution is centrifuged and degassed at a speed of 4000 rpm for 5 minutes, and then poured into a glass plate for tape casting; wherein the thickness of t...

Embodiment 3

[0042] With above-mentioned embodiment 1, its difference is:

[0043] In step (2), the tilapia scale gelatin was dissolved in water for 22 minutes and then dissolved in a water bath at 55°C for 18 minutes to obtain a fish scale gelatin solution;

[0044] In step (3), the bamboo leaf flavonoids are added to the fish scale gelatin solution according to the addition amount of 0.6% of the tilapia scale gelatin mass, and magnetically stirred for 22 minutes to mix evenly to obtain a fish scale gelatin mixture;

[0045] In step (4), the chitosan solution and the fish scale gelatin mixture are mixed at a volume ratio of 1:1, and after magnetically stirred for 22 minutes to mix evenly, a certain amount of glycerin is added, and magnetically stirred for 16 minutes to be evenly mixed to obtain a film-forming liquid;

[0046] In step (5), the film-forming solution is centrifuged and degassed at a speed of 4500 rpm for 6 minutes, and then poured into a glass plate for tape casting; wherein...

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Abstract

The invention discloses a preparation method of a bamboo leaf flavone modified fish scale gelatin-chitosan composite film. The preparation method is characterized by comprising the following steps: dissolving tilapia mossambica scale gelatin into water and absorbing the water to be swollen for 18min to 22min; dissolving in a water-bath pot; then adding bamboo leaf flavone which is 0.2 percent to 0.6 percent of the mass of the tilapia mossambica scale gelatin; magnetically stirring and uniformly mixing to obtain a fish scale gelatin mixed solution; mixing a chitosan solution with the fish scale gelatin mixed solution at the volume ratio of 1 to 1; after magnetically stirring and uniformly mixing, adding glycerol; after magnetically stirring and uniformly mixing, obtaining a film forming solution; centrifuging and degassing the film forming solution, and pouring the film forming solution into a glass plate and carrying out curtain coating and molding; putting the glass plate into a stable air blowing drying box; controlling the temperature to be 22 DEG C to 28 DEG C; after blowing with air and drying for 48h, removing a film, so as to obtain the bamboo leaf flavone modified fish scale gelatin-chitosan composite film. The bamboo leaf flavone modified fish scale gelatin-chitosan composite film has the advantages of excellent ultraviolet resisting performance, relatively low water solubility, moisture content and water vapor permeability, and good bacterium inhibition and anti-oxidization effects.

Description

technical field [0001] The invention relates to a scale gelatin-chitosan composite film, in particular to a preparation method of a fish scale gelatin-chitosan composite film modified by bamboo leaf flavonoids. Background technique [0002] In response to the pollution caused by plastic packaging to food and the environment, it has become a global need to research and develop biodegradable packaging materials and further optimize their performance. Film-forming biomacromolecules are polysaccharides, proteins, lipids, etc. In addition to its application in food processing, gelatin is also a class of protein with good film-forming properties. At present, most of the gelatin in the world comes from mammals such as pigs and cattle, but due to the potential threat of carrying pathogenic viruses and religious beliefs in some areas, this type of gelatin cannot be widely used around the world. It is very important to find and develop new sources of gelatin for substitution. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L89/00C08L5/08C08K5/053C08K5/00
Inventor 周伟张进杰黄文娟李晓辉熊金波杨文鸽楼乔明徐大伦
Owner NINGBO UNIV
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