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Color-changing edible food packaging film and preparation method thereof

A food packaging film and film-forming technology, applied in the field of packaging materials, can solve the problems of relying on artificial synthesis, consumption, and unfavorable resource-saving society construction, etc., to achieve the effect of ensuring food health, broad application prospects, and good moisture retention

Inactive Publication Date: 2021-02-23
嘉兴市轩禾园艺技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, most of its production raw materials rely on artificial synthesis, which consumes more resources and energy during preparation, which is not conducive to the construction of a resource-saving society.
At the same time, the usual food packaging film only has the function of extending the shelf life. In fact, if the food is spoiled, it is more difficult to observe. Therefore, it is necessary to develop a packaging film that can clearly judge whether the food is spoiled

Method used

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  • Color-changing edible food packaging film and preparation method thereof
  • Color-changing edible food packaging film and preparation method thereof
  • Color-changing edible food packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of embodiment 1 discoloration edible food packaging film

[0031] Specifically include the following steps:

[0032] S1. Refer to attached figure 1 , Dissolve 125g of phosphatidylethanolamine in ethanol, the solid-to-liquid ratio is 1:1g / mL, add 5g of condensing agent dicyclohexylcarbodiimide and 15g of fish collagen peptide, heat to 35°C for 3h, and place in vacuum Degas in a vacuum oven at 0.01MPa for 5 minutes to remove air bubbles, filter, and wash the product with a buffer solution with a pH of 6 for 5 times;

[0033] S2. Pulverize the phenolphthalein flakes, grind them down to below 100 mesh, and grind them to below 1000 mesh through a ball mill to obtain phenolphthalein fine powder;

[0034] S3. Add 100g of the product in step S1 to water, solid-to-liquid ratio 1:0.5g / mL, and add 0.5g nisin and 0.1g natamycin, stir and mix evenly, further add 0.5g phenolphthalein fine powder, 10000r / min Homogenize for 1 min to obtain a homogenized solut...

Embodiment 2

[0035] The preparation method of embodiment 2 discoloration edible food packaging film

[0036] Specifically include the following steps:

[0037] S1. Refer to attached figure 1, Dissolve 170g of phosphatidylethanolamine in ethanol with a solid-to-liquid ratio of 1:5g / mL, add 10g of condensing agent dicyclohexylcarbodiimide and 25g of fish collagen peptide, heat to 45°C for 5h, and place in vacuum Degas in a vacuum oven at 0.1 MPa for 5-7 minutes to remove air bubbles, filter, and wash the product with a buffer solution with a pH of 8 for 10 times;

[0038] S2. Pulverize the phenolphthalein flakes, grind them down to below 100 mesh, and grind them to below 1000 mesh through a ball mill to obtain phenolphthalein fine powder;

[0039] S3. Add 100g of the product in step S1 into water, the solid-to-liquid ratio is 1:1g / mL, and add 1.5g nisin and 1g natamycin, stir and mix evenly, and further add 1g phenolphthalein fine powder, 12000r / min After massaging for 3 minutes, a homoge...

Embodiment 3

[0040] The preparation method of embodiment 3 discoloration edible food packaging film

[0041] Specifically include the following steps:

[0042] S1. Refer to attached figure 1 , Dissolve 150g of phosphatidylethanolamine in ethanol with a solid-to-liquid ratio of 1:3g / mL, add 7g of condensing agent dicyclohexylcarbodiimide and 20g of fish collagen peptide, heat to 40°C for 4 hours, and place in a vacuum Degas in a vacuum drying oven at 0.05MPa for 6 minutes to remove air bubbles, filter, and wash the product 7 times with a buffer solution with a pH of 7;

[0043] S2. Pulverize the phenolphthalein flakes, grind them down to below 100 mesh, and grind them to below 1000 mesh through a ball mill to obtain phenolphthalein fine powder;

[0044] S3. Add 100g of the product in step S1 to water, solid-to-liquid ratio 1:0.7g / mL, and add 1g nisin and 0.5g natamycin, stir and mix evenly, further add 0.7g phenolphthalein fine powder, 11000r / mL Homogenize for 2 minutes to obtain a homog...

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Abstract

The invention provides a preparation method of a color-changing edible food packaging film. The preparation method comprises the following steps: reacting phosphatidylethanolamine with fish collagen peptide, removing bubbles, adding nisin and natamycin, conducting uniform mixing, adding fine phenolphthalein powder, conducting homogenizing to obtain a homogenized solution, forming a film, drying the film, and washing the film with water, and conducting drying to obtain the white transparent color-changing edible food packaging film. According to the color-changing edible food packaging film disclosed by the invention, a skeleton structure of the color-changing edible food packaging film is prepared by taking cephalanophosphatidylethanolamine and fish collagen peptide as raw materials through a reaction; the phosphatidylethanolamine is phospholipid and has a good effect of keeping moisture as the packaging film, so the moisture is difficult to overflow, and a long-acting fresh-keeping effect can be realized; and the packaging film is prepared by taking food materials as raw materials, has the effects of edibility, degradability, environmental friendliness and the like, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a color-changing edible food packaging film and a preparation method thereof. Background technique [0002] Food packaging bags refer to film containers that can be in direct contact with food and are used to hold and protect food. According to their application range, they can be divided into: ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags , Retort food packaging bags and functional food packaging bags. The raw materials used to produce food packaging bags are various films, and the performance of food packaging bags is often directly determined by the components and molding quality of the films. [0003] The Chinese patent with the publication number CN106947155A discloses a degradable food packaging bag, which consists of 20-45 parts of low-density polyethylene, 25-40 parts of metallocene linear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08K5/17C08K5/134C08K5/521C08J5/18C08K9/06B65D65/46
CPCB65D65/463C08J5/18C08J2389/00C08K5/134C08K5/17C08K5/521C08K9/06
Inventor 不公告发明人
Owner 嘉兴市轩禾园艺技术有限公司
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