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Preparation of polygenipin-gelatin edible food packaging film

A technology of food packaging film and polygenipin, which is applied in packaging, wrapping paper, transportation and packaging, etc., and can solve the problems of cytotoxic calcification and so on

Inactive Publication Date: 2016-04-06
姜丹宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the glutaraldehyde crosslinked gelatin material modified by glutaraldehyde will partially dissolve in the water environment, resulting in certain cytotoxicity and calcification of the glutaraldehyde crosslinked gelatin material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation of polygenipin-gelatin edible food packaging film, comprising the following steps: (1) taking 10mL of genipin solution with a concentration of 10mg / mL, and then adjusting the pH value to 7 or 8 with 0.1M NaOH solution , 9, 10, 11 and 12, stirred and reacted at room temperature for 6 hours, adjusted to neutrality with 0.1M HCl solution after the reaction, and finally adjusted to 100mL to obtain the concentration of 1mg / mL at different pH values. The ring-polymerized polygenipin solutions are named PG-7, PG-8, PG-9, PG-10, PG-11 and PG-12, respectively.

[0018] (2) Weigh 1.0g of gelatin, add 25mL of deionized water, stir and dissolve the gelatin in a water bath at 40oC, then add 2mL of glycerin solution with a concentration of 0.1g / mL, stir well and add 20mL of 1mg / mL The polygenipin solution prepared at the pH value was stirred and reacted in a water bath at 40oC for 6 hours; then injected into a polytetrafluoroethylene mold and dried to obtain a polygenip...

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PUM

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Abstract

The invention provides a polygenipin-gelatin edible food packaging film. The polygenipin can significantly improve the thermal stability, water vapor permeability, mechanical properties and thermal stability of the film material. According to the invention, gelatin is adopted as the raw material, ring opening polymerization of genipin is carried out under alkaline conditions to obtain polygenipin serving as the cross-linking agent, and glycerin is taken as the plasticizer, and an injection molding method is employed to prepare the polygenipin-gelatin edible food packaging film. Along with the increase of the reaction pH value, the polymerization degree of genipin increases gradually. Optical performance test finds that the polygenipin-gelatin film has small light transmittance in visible light areas, and has strong absorption in ultraviolet areas.

Description

technical field [0001] The invention belongs to the food packaging film in the field of food packaging, and in particular relates to the preparation of a polygenipin-gelatin edible food packaging film. Background technique [0002] Food packaging film is mainly used to wrap and preserve food to prevent food from being oxidized or corroded by some bacteria, mold and other microorganisms. Synthetic plastic food packaging films prepared from petroleum have a slow degradation rate and poor reusability, which will bring serious environmental pollution problems. The near depletion of non-renewable petroleum resources has also had a major impact on the development of synthetic plastic food packaging films. [0003] In recent years, the research on edible food packaging films with wide sources of raw materials and good biodegradability has become a hot spot. Gelatin has a wide range of sources, good biodegradability, good nutritional properties, good gas and oil barrier properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L89/00B65D65/46
Inventor 姜丹宁马仁魁
Owner 姜丹宁