Sustained-release antioxidant food packaging film and method for preparing same

An oxidative food and sustained-release technology, which is used in the field of antioxidant active food packaging materials and the preparation of sustained-release antioxidant films, can solve the problem of reducing the release rate, prolonging the action time of antioxidants, and releasing too fast active substances with sustained-release effects, etc. problems, to achieve the effect of prolonging the action time, prolonging the shelf life, and widening the scope of application

Inactive Publication Date: 2016-09-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, just adding antioxidants to the packaging substrate cannot greatly reduce the release rate and prolong the effect of antioxidants in the packaging system. Therefore, in recent years, researchers have begun to study the combination of other slow/controlled...

Method used

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  • Sustained-release antioxidant food packaging film and method for preparing same
  • Sustained-release antioxidant food packaging film and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Present embodiment packaging film preparation steps are as follows:

[0019] (1) Dissolve 4.308g of α-tocopherol in 40mL of ethanol, add 2g of MCM-41 to the solution, stir magnetically at room temperature for 3 hours and then filter it with a sand core funnel, and dry the obtained solid in a vacuum oven at 35°C overnight to obtain Assembly.

[0020] (2) Weigh 2g of the assembly obtained in step 1), mix it evenly with 200g of LDPE masterbatch, add it to the feed hopper of a twin-screw extrusion granulator preheated at 175°C, set the screw speed to 60rpm, and granulate .

[0021] (3) Pour the blended masterbatch prepared in step (2) into the feed hopper of a single-screw extrusion casting machine preheated at 175° C., and set the screw speed at 30 rpm to prepare a film. The prepared films were stored away from light and vacuum-sealed until sampling and testing.

Embodiment 2

[0023] Present embodiment packaging film preparation steps are as follows:

[0024] (1) Dissolve 2.58g of α-tocopherol in 20mL of ethanol, add 2g of MCM-41 to the solution, stir magnetically at room temperature for 3 hours, then filter it with a sand core funnel, and dry the obtained solid in a vacuum oven at 35°C overnight to obtain Assembly.

[0025] (2) Weigh 1g of the assembly obtained in step 1), mix it evenly with 200g of LDPE masterbatch, add it to the feed hopper of a twin-screw extrusion granulator preheated at 175°C, set the screw speed to 60rpm, and granulate .

[0026] (3) Pour the blended masterbatch prepared in step (2) into the feed hopper of a single-screw extrusion casting machine preheated at 175° C., and set the screw speed at 30 rpm to prepare a film. The prepared films were stored away from light and vacuum-sealed until sampling and testing.

Embodiment 3

[0028] Present embodiment packaging film preparation steps are as follows:

[0029] (1) Dissolve 2.58g of α-tocopherol in 20mL of ethanol, add 2g of MCM-41 to the solution, stir magnetically at room temperature for 3 hours, then filter it with a sand core funnel, and dry the obtained solid in a vacuum oven at 35°C overnight to obtain Assembly.

[0030] (2) Weigh 1g of the assembly obtained in step 1), mix it evenly with 200g of polypropylene masterbatch, add it to the feed hopper of a twin-screw extrusion granulator preheated at 230°C, set the screw speed to 60rpm, Granulate.

[0031] (3) Pour the blended masterbatch prepared in step (2) into the feed hopper of a single-screw extrusion casting machine preheated at 230° C. and set the screw speed at 30 rpm to prepare a film. The prepared films were stored away from light and vacuum-sealed until sampling and testing.

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Abstract

The invention relates to an antioxidant food packaging film with a sustained-release function, and belongs to research categories of active food packaging films. Mesoporous molecular sieves are used as carriers for carrying antioxidants, the antioxidant food packaging film can be formed in an extrusion casting machine after assemblies and master batch are molten and granulated, and the additive amounts of the molecule sieves/antioxidant assemblies are 0.1%-10%. The antioxidant food packaging film has the advantages that the antioxidant delivery time can be effectively prolonged; as shown by sustained-release experiment effects, the release rate of the antioxidants in the antioxidant food packaging film can be reduced; destructive influence of the added assemblies on the performance of the antioxidant food packaging film can be prevented, and the antioxidant food packaging film which is a sustained-release film still is excellent in tensile strength and oxygen and moisture barrier performance.

Description

technical field [0001] The invention relates to an anti-oxidant active food packaging material, in particular to a method for preparing a slow-release anti-oxidation film added with an antioxidant / mesoporous molecular sieve assembly, and belongs to the technical field of active food packaging materials. Background technique [0002] At present, the oxidation of oily food is one of the most serious problems faced by food enterprises in logistics and warehousing. The deterioration or short shelf life of food will greatly reduce the economic benefits of food enterprises. In order to prolong the shelf life of oily foods, people have taken many measures to reduce the rate of oil oxidation. In terms of packaging technology, high barrier materials are combined with vacuum or modified atmosphere packaging to reduce the oxygen content inside food packaging, but due to the packaging process A small amount of residual oxygen in the package or oxygen migrates from the outside through th...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K7/26C08K5/1545
CPCC08K7/26C08J5/18C08J2323/06C08J2323/12C08K5/1545C08L2201/08C08L2201/14C08L2203/16C08L2207/066C08L23/06C08L23/12
Inventor 卢立新孙莉楠蔡莹
Owner JIANGNAN UNIV
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