Antibacterial and antioxidant edible gelatin composite membrane and preparation method thereof

A composite film and anti-oxidation technology, applied in the field of plastics, can solve the problems of gelatin-based materials such as poor water resistance and mechanical strength, and easy to be contaminated by microorganisms, and achieve the effect of rapid environmental pH value responsiveness

Inactive Publication Date: 2017-08-04
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a protein, gelatin is easily contaminated by microorganisms. In addition, gelatin-based materials have poor water resistance and mechanical strength, which cannot meet the requirements of market applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Curcumin is dissolved in the ethanol-water solution that ethanol and water volume ratio are 0.5:1, and configuration mass concentration is the curcumin solution of 0.5%, then it is the starch of 10% with mass concentration at 50 o Stir under C condition 10min, afterward sonication 10min, obtain the curcumin solution of compatibilization treatment; Configuration mass concentration is the gelatin solution of 15%, then adds the glycerol that accounts for gelatin dry weight massfraction and is 10%, stirs at room temperature after 20min It was blended with the equal volume of curcumin solution treated by compatibilization, stirred at room temperature for 30min, adjusted the pH value of the mixed solution to 8, then added genipin (accounting for 5% of the dry weight of gelatin) solution, and continued to stir at room temperature for 10min. which is poured into the mold and finally placed in the 25 o The antibacterial and antioxidative edible gelatin composite film was prepare...

Embodiment 2

[0018] Curcumin is dissolved in the ethanol aqueous solution that ethanol and water volume ratio are 1:1, and configuration mass concentration is the curcumin solution of 0.1%, then it is 8% cyclodextrin with mass concentration at 35 o Stir under C condition for 20min, then sonicate for 15min, obtain the curcumin solution of compatibilization treatment; configure the gelatin solution with a mass concentration of 10%, then add glycerin and maltitol which account for 20% of the gelatin dry weight mass fraction, and stir at room temperature After 20 minutes, it was blended with the curcumin solution treated with volume expansion, stirred at room temperature for 25 minutes, and the pH value of the mixed solution was adjusted to 11, and then the solution of dialdehyde inulin and tea polyphenol (10% of the dry weight of gelatin) was added , continue to stir at room temperature for 20min and pour it into the mold, and finally place it at 40 o The antibacterial and antioxidative edibl...

Embodiment 3

[0020] Curcumin is dissolved in the ethanol aqueous solution that ethanol and water volume ratio are 0.8:1, configuration mass concentration is the curcumin solution of 0.06%, then it is 2% carboxymethyl-cyclodextrin with mass concentration at 40 o Stirring under the condition of C for 10min, followed by ultrasonic treatment for 20min, to obtain the curcumin solution of the compatibilization treatment; configure the gelatin solution with a mass concentration of 8%, then add sorbitol accounting for 15% of the gelatin dry weight mass fraction, and stir at room temperature for 25min Finally, it was blended with the equal volume of curcumin solution treated by compatibilization, stirred at room temperature for 20min, adjusted the pH value of the mixed solution to 9, and then added dialdehyde xanthan gum (accounting for 5% of the dry weight of gelatin) solution, and continued at room temperature After stirring for 10min, pour it into the mould, and finally place it at 30 o The anti...

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PUM

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Abstract

The invention relates to an antibacterial and antioxidant edible gelatin composite membrane and a preparation method thereof. The method comprises the steps of firstly carrying out blending, heating and ultrasonic treatment on curcumin and a solubilizer; mixing with gelatin and a plasticizer solution evenly, adjusting the pH value of a mixed solution to be 7-11, adding a cross-linking agent solution, mixing evenly at a room temperature and then injecting into a mold; and finally drying to prepare the gelatin composite membrane. Through adding the natural active material curcumin, the gelatin composite membrane is endowed with antibacterial and antioxidant properties, a gelatin material can be prompted to display different colors in different pH value environments through successful instruction of the curcumin, and environmental pH value responsiveness of the gelatin membrane material is achieved. In addition, the gelatin composite membrane also has the characteristics of being wide in raw material source, high in mechanical strength, good in water-tightness, environmentally degradable and edible, and has potential market application value in the field of medicine and food packaging.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to an edible gelatin composite film with antibacterial and anti-oxidation capabilities, high mechanical strength and environmental degradation and a preparation method thereof. Background technique [0002] Nutrients such as food are easily polluted by microorganisms in the environment during storage, which in turn causes food deterioration and spoilage. In addition, the ultraviolet rays and free radicals in the environment can also cause the oxidation of lipids and other substances, destroy their taste, and even produce some pathogenic and carcinogenic chemical components. Therefore, in order to prolong the storage time of food, medicine and other substances, it is of great significance to research and develop new packaging materials with strong ultraviolet absorption ability and strong antibacterial and antioxidative ability. [0003] Gelatin is a partial degradation product of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L3/02C08L5/16C08L5/00C08L3/10C08L1/28C08K5/132C08K5/053C08K5/1545C08J5/18B65D65/46
CPCB65D65/463B65D65/466C08J5/18C08J2389/00C08J2403/02C08J2403/10C08J2405/16C08K2201/014C08L89/00C08L2201/06C08L2201/08C08L2203/16C08L2205/02C08L2205/03C08L3/02C08K5/132C08K5/053C08K5/1545C08L5/16C08L5/00C08L3/10C08L1/286Y02W90/10
Inventor 穆畅道缪可言葛黎明李德富赵春淋谭昕玥
Owner SICHUAN UNIV
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