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Preparation method of edible food packaging film

A technology for food packaging film and preparation steps, which is applied in the field of preparation of edible food packaging film, can solve the problems of high brittleness, poor gas barrier and antibacterial properties, and achieve the effect of low cost and simple preparation steps

Inactive Publication Date: 2017-02-08
TRUSYN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of tung oil as a bactericidal component, pigskin collagen and whey for the shortcomings of the existing edible food packaging films, such as poor moisture permeability, poor gas barrier property and antibacterial property, and high brittleness. A method for preparing edible food packaging film by protein compounding, the invention firstly extracts tung oil from tung seeds, then uses pigskin as raw material, enzymatically hydrolyzes to prepare pigskin collagen, and then mixes it with whey protein, chitosan, etc. Wrapping film
Collagen film has good gas barrier properties, and tung oil can effectively prevent the entry and loss of moisture by utilizing its own polarity, and the addition of xanthan gum can improve the brittleness of the film and increase its softness. The edible The food packaging film solves the problems of poor moisture permeability, gas barrier and antibacterial properties, and high brittleness. The prepared packaging film can inhibit the growth of food microorganisms during storage, and the shelf life can also be extended to 1 to 2 times the original

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First collect 400g of mature tung seeds and expose them to the sun until the tung seeds crack. After manually removing the shell, collect the tung seeds and wash them with deionized water for 3 times, then place the washed tung seeds in a ventilated place Naturally air-dry for 3 hours, put the dried tung seeds in a pulverizer for crushing, and pass through a 60-mesh sieve, collect the sifted material, and place it in a filter paper bag, then put the filter paper bag into a Soxhlet extractor, and then Add 1L of absolute ethanol and extract at 70°C for 3 hours. After the extraction is complete, collect the extract and distill it under reduced pressure to 1 / 10 of the original volume to obtain a concentrated tung oil solution for later use; weigh 100g of pigskin and wash it with deionized water After cleaning, put it in a meat grinder and grind it for 5 minutes to get minced pork skin, put it in a beaker, then add 500mL of 10% sodium chloride solution, stir for 2 hours, put ...

example 2

[0019] First collect 450g of mature tung seeds, and expose them to the sun until the tung seeds crack. After manually removing the shell, collect the tung seeds, wash them with deionized water for 4 times, and place the washed tung seeds in a ventilated place Naturally air-dry for 3 hours, put the dried tung seeds in a pulverizer for crushing, and pass through a 70-mesh sieve, collect the sifted material, and place it in a filter paper bag, then put the filter paper bag into a Soxhlet extractor, and then Add 1L of absolute ethanol and extract at 75°C for 3 hours. After the extraction is complete, collect the extract and distill it under reduced pressure to 1 / 10 of the original volume to obtain a concentrated tung oil solution for later use; weigh 150g of pigskin and wash it with deionized water After cleaning, put it in a meat grinder and grind it for 8 minutes to get minced pork skin and put it in a beaker, then add 550mL of sodium chloride solution with a mass fraction of 10%...

example 3

[0022]First collect 500g of mature tung seeds, and expose them to the sun until the tung seeds crack. After manually removing the shell, collect the tung seeds, wash them with deionized water for 5 times, and place the washed tung seeds in a ventilated place. Naturally air-dry for 4 hours, put the dried tung seeds into a pulverizer for crushing, and pass through an 80-mesh sieve, collect the sifted material, and place it in a filter paper bag, then put the filter paper bag into a Soxhlet extractor, and then Add 2L of absolute ethanol and extract at 80°C for 4 hours. After the extraction is complete, collect the extract and distill it under reduced pressure to 1 / 10 of the original volume to obtain a concentrated tung oil solution for later use; weigh 200g of pigskin and wash it with deionized water After cleaning, put it in a meat grinder and grind it for 10 minutes to get minced pork skin and put it in a beaker, then add 600mL of 10% sodium chloride solution by mass fraction, s...

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Abstract

The invention relates to a preparation method of an edible food packaging film, and belongs to the technical field of food packaging film preparation. The preparation method comprises the following steps: firstly extracting and preparing tung oil from tung seeds; then taking pigskin as a raw material, and carrying out enzymolysis, thus preparing pigskin collagen; then compounding the pigskin collagen with whey protein, chitosan and the like, thus obtaining a packaging film. A collagen film has good gas barrier property, entrance and loss of water can be effectively prevented by utilizing self polarity of the tung oil, the brittleness of the collagen film can be improved through the adding of xanthan gum, and the softness of the edible food packaging film is increased; according to the edible food packaging film prepared by the invention, the problems of poor moisture penetrability, poor gas barrier property, poor antibacterial property and large brittleness are solved, the prepared edible food packaging film is capable of inhibiting growth of food microorganism during a storage process, and the shelf life can also be prolonged by 1 to 2 times.

Description

technical field [0001] The invention relates to a preparation method of an edible food packaging film, belonging to the technical field of food packaging film preparation. Background technique [0002] In recent years, the importance of the safety of food packaging materials has been increasing, which has become a research field in various countries. They all hope to develop environmentally friendly and safe food packaging materials. At the same time, they have also strengthened the supervision of the safety of current food packaging materials. Food packaging materials It is a material that can protect the food in it from various physical, chemical and biological environmental factors. At present, the market has increasing requirements for food packaging materials, hoping to extend the shelf life of fresh and high-quality food, especially the demand for active packaging materials, because it can prevent the growth of microorganisms by changing the packaging environment insid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L89/00C08L5/08C08L5/00C08J5/18B65D65/46
CPCC08L91/00B65D65/463C08J5/18C08J2391/00C08J2489/00C08L2201/14C08L2203/16C08L2205/02C08L2205/025C08L2205/035
Inventor 吴蓉蓉孟中立
Owner TRUSYN CHEM TECH
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