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A kind of preparation method of ultrasonically modified composite gelatin film

A technology of ultrasonic modification and gelatin film, applied in the field of gelatin film, can solve the problem of only controlling the amount of oily components added, and achieve the effects of good mechanical properties, high product quality and low film thickness

Active Publication Date: 2022-05-20
JIANGXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the technical defect of prior art, provides a kind of preparation method of ultrasonically modified composite gelatin film, to solve prior art, in order to maintain the tensile strength of composite gelatin film, can only control oily component in gelatin film The technical problem of the amount added in

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  • A kind of preparation method of ultrasonically modified composite gelatin film
  • A kind of preparation method of ultrasonically modified composite gelatin film
  • A kind of preparation method of ultrasonically modified composite gelatin film

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preparation example Construction

[0029] A preparation method for ultrasonically modified composite gelatin film, comprising the steps of:

[0030] (1) The following materials are selected in parts by weight: 8% gelatin, 1% glycerin, 4% soybean oil, 0.8% Tween, and the rest are deionized water, 100% in total.

[0031] (2) Mix gelatin and water in parts by weight, dissolve in a 60°C aqueous solution for 90 minutes, and keep stirring until the gelatin is completely dissolved.

[0032] (3) cooling the gelatin solution in step (2) to room temperature, adding the glycerin solution in parts by weight, and mixing evenly to obtain a gelatin-glycerol aqueous solution;

[0033] (4) mixing soybean oil and Tween 80 in parts by weight, and fully shaking with an oscillator to obtain an oily solution;

[0034] (5) The aqueous solution of step (3) is mixed with the oily solution of step (4), and homogenized for 3 minutes under the condition of 13000 rpm with a homogenizer to obtain a composite gelatin film liquid;

[0035] ...

Embodiment 1

[0044] (1) The following materials are selected in parts by weight: 8% gelatin, 1% glycerin, 4% soybean oil, 0.8% Tween, and the rest are deionized water, 100% in total.

[0045] (2) Mix gelatin and water in parts by weight, dissolve in a 60°C aqueous solution for 90 minutes, and keep stirring until the gelatin is completely dissolved.

[0046](3) cooling the aqueous gelatin solution in step (2) to room temperature, adding glycerin solution in parts by weight, and mixing uniformly to obtain a gelatin-glycerol aqueous solution;

[0047] (4) mixing soybean oil and Tween 80 in parts by weight, and fully shaking with an oscillator to obtain an oily solution;

[0048] (5) The aqueous solution of step (3) is mixed with the oily solution of step (4), and homogenized for 3 minutes under the condition of 13000 rpm with a homogenizer to obtain a composite gelatin film liquid;

[0049] (6) Ultrasonic the gelatin emulsion of step (5) for 3 minutes under the condition of 210w to obtain th...

Embodiment 2

[0053] (1) The following materials are selected in parts by weight: 8% gelatin, 1% glycerin, 4% soybean oil, 0.8% Tween, and the rest are deionized water, 100% in total.

[0054] (2) Mix gelatin and water in parts by weight, dissolve in a 60°C aqueous solution for 90 minutes, and keep stirring until the gelatin is completely dissolved.

[0055] (3) cooling the aqueous gelatin solution in step (2) to room temperature, adding glycerin solution in parts by weight, and mixing uniformly to obtain a gelatin-glycerol aqueous solution;

[0056] (4) mixing soybean oil and Tween 80 in parts by weight, and fully shaking with an oscillator to obtain an oily solution;

[0057] (5) The aqueous solution of step (3) is mixed with the oily solution of step 4, and homogenized for 3 minutes under the condition of 13000 rpm with a homogenizer to obtain a composite gelatin emulsion;

[0058] (6) Ultrasonic the gelatin emulsion of step (5) for 6 min under the condition of 210w to obtain the film l...

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Abstract

The invention provides a preparation method of an ultrasonically modified composite gelatin film. The technical scheme uses gelatin, glycerin, soybean oil, Tween, and deionized water as raw materials in a specific ratio to prepare gelatin-glycerin aqueous solution and oily solution respectively. After mixing the two, first perform homogenization treatment to obtain a composite gelatin film. liquid, and then ultrasonically vibrated under specific conditions to modify the microstructure of the membrane liquid. The ultrasonic treatment process of the present invention can affect the particle size and distribution of soybean oil in the gelatin film liquid, reduce the hindrance of oil droplet particles to protein-protein interaction, increase the specific surface area and astigmatism rate of oil droplet particles, thereby obtaining Composite gelatin film with higher tensile strength, elongation at break and light barrier properties, lower film thickness, water vapor permeability and water solubility. The composite gelatin film prepared by the method has high safety and good physical properties, and can be widely used in the fields of food packaging and medicine.

Description

technical field [0001] The invention relates to the technical field of gelatin films, in particular to a preparation method of ultrasonically modified composite gelatin films. Background technique [0002] Gelatin is a protein-derived biomaterial with film-forming and biocompatibility properties. Gelatin films made of gelatin are safe, edible and environmentally degradable. Gelatin films have become a research hotspot in the fields of food and medicine, and are used in food packaging, wound dressings, and drug delivery. The common problems of gelatin film are that its stretchability and water resistance are very poor, and it is easy to dissolve when exposed to water, which cannot meet its development needs in the fields of food packaging and medicine. [0003] In order to improve the application performance of gelatin film, adding oily components in the preparation process of gelatin film can significantly improve the elongation at break, waterproof performance and light ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J3/28C08L89/00C08L91/00C08K5/053
CPCC08J5/18C08J3/28C08J2389/00C08J2491/00C08K5/053Y02W90/10
Inventor 涂宗财李鑫沙小梅王辉刘俊张露
Owner JIANGXI NORMAL UNIV
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