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Preparation method of composite preservative film

A composite fresh-keeping and mixture technology is applied in the field of composite fresh-keeping film preparation, which can solve the problems of resource waste, human injury and the like, and achieve the effects of inhibiting breeding, low cost and low production cost.

Inactive Publication Date: 2017-06-23
HEFEI JINTONGWEI LOW TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deteriorated food is not only a waste of resources, but also causes harm to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a composite fresh-keeping film includes the following steps:

[0028] Step 1: Add 70g of natural polysaccharides to 3wt% acetic acid solution, and heat at 80°C to completely gelatinize to obtain mixture one;

[0029] Step 2: Add emulsifier and plasticizer to mixture one and stir evenly at 80°C to obtain mixture two;

[0030] Step 3: Add the natural functional substance to the water, stir at 30°C until it is completely dissolved, and prepare an aqueous solution of the natural functional substance with a concentration of 1 wt%;

[0031] Step 4. Cool the second mixture of step 2 to 50°C, add protein, heat and stir in a water bath at 40°C for 30 minutes to obtain mixture three;

[0032] Step 5. Mix the mixture 3 and the natural functional substance aqueous solution of step 3, and heat at 60°C for 40 min to obtain mixture 4;

[0033] Step 6. Pour the mixture 4 into the mold and dry it at 60°C to form a film;

[0034] Step 7, cooling the film obtained in step 6 to ...

Embodiment 2

[0043] A method for preparing a composite fresh-keeping film includes the following steps:

[0044] Step 1: Add 80g of natural polysaccharides to 5wt% acetic acid solution, and heat at 100°C to completely gelatinize to obtain mixture one;

[0045] Step 2: Add emulsifier and plasticizer to mixture one and stir evenly at 100°C to obtain mixture two;

[0046] Step 3: Add the natural functional substance to the water and stir at 40°C until it is completely dissolved to prepare an aqueous solution of the natural functional substance with a concentration of 1 wt%;

[0047] Step 4. Cool the second mixture of step 2 to 50°C, add protein, and heat and stir in a water bath at 40°C for 50 minutes to obtain mixture three;

[0048] Step 5: Mix mixture 3 and the natural functional substance aqueous solution of step 3, and heat at 70°C for 50 minutes to obtain mixture 4;

[0049] Step 6. Pour the mixture 4 into the mold and dry it at 80°C to form a film;

[0050] Step 7, cooling the film obtained in ste...

Embodiment 3

[0059] A method for preparing a composite fresh-keeping film includes the following steps:

[0060] Step 1: Add 80g of natural polysaccharides to 3wt% acetic acid aqueous solution, and heat at 100°C to completely gelatinize to obtain mixture one;

[0061] Step 2: Add emulsifier and plasticizer to mixture one and stir evenly at 80°C to obtain mixture two;

[0062] Step 3: Add the natural functional substance to the water, stir at 30°C until it is completely dissolved, and prepare an aqueous solution of the natural functional substance with a concentration of 1.2wt%;

[0063] Step 4. Cool the second mixture of step 2 to 50°C, add protein, and heat and stir in a water bath at 40°C for 50 minutes to obtain mixture three;

[0064] Step 5: Mix mixture 3 and the natural functional substance aqueous solution of step 3, and heat at 60°C for 50 minutes to obtain mixture 4;

[0065] Step 6. Pour the mixture 4 into the mold and dry it at 60°C to form a film;

[0066] Step 7, cooling the film obtained...

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Abstract

The invention provides a preparation method of a composite nylon material. The preparation method comprises the following steps: I. adding natural polysaccharide into an acetic acid water solution, heating to be completely gelatinized, to obtain a mixture I; II, adding an emulsifier and a plasticizer into the mixture I, heating and stirring, to obtain a mixture II; III, then adding natural functional materials into water, stirring to be completely dissolved, to prepare a natural functional material water solution; IV. cooling the mixture II to 50DEG C, adding protein, performing water bath heating and stirring, to obtain a mixture III; V, mixing the mixture III with the natural functional material water solution, to obtain a mixture IV; VI, pouring the mixture IV into a mould, drying and forming a film; and VII, cooling the film obtained in the step VI to be at normal temperature. The preparation method is simple, the production cost is low, the formed preservative film has the characteristics of being non-toxic and harmless, and good in moisture barrier property, so that the preservation effect of food can be effectively enhanced.

Description

Technical field [0001] The invention belongs to the technical field of manufacturing food fresh-keeping film, and specifically relates to a preparation method of a composite fresh-keeping film. Background technique [0002] With the improvement of people's living standards, the quality and safety of food have received more and more attention from consumers. People hope that the food they buy can be fresh, nutritious, healthy and safe. Microbial contamination and oxidation are the main causes of food spoilage. Every year around the world, there are major economic losses caused by food corruption. Deteriorated food is a waste of resources and can cause harm to the human body. Therefore, taking the necessary measures to ensure the quality and safety of food and extend the shelf life of food is an important topic in the field of food research today. [0003] In order to achieve the purpose of extending the shelf life of food, people have adopted a variety of physical, chemical and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08L1/28C08L3/02C08L89/00C08K5/053C08K5/00C08J5/18
CPCC08L5/08C08J5/18C08J2301/28C08J2303/02C08J2305/08C08L1/286C08L3/02C08L2203/16C08L89/00C08K5/053C08K5/0058
Inventor 武行峰
Owner HEFEI JINTONGWEI LOW TEMPERATURE TECH CO LTD
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