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Preparation method and application of antibacterial active food packaging film

A technology of food packaging film and antibacterial activity, applied in the field of edible film, can solve the problems of improper packaging method, poor antibacterial effect, excessive residual amount of benzene solvents, etc., and achieve the effect of extending the shelf life

Inactive Publication Date: 2019-08-02
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the other hand, the waste of resources due to improper food packaging is also an urgent problem to be solved.
In addition to the problems of the packaging material itself, unqualified plastic packaging may easily cause the residual amount of benzene solvents to exceed the standard, and there may be fluorescent agents and mineral oils in paper packaging products. Improper packaging methods and poor antibacterial effects will also cause premature food corruption

Method used

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  • Preparation method and application of antibacterial active food packaging film
  • Preparation method and application of antibacterial active food packaging film

Examples

Experimental program
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Effect test

experiment example 1

[0032] This example provides an edible packaging film containing β-cyclodextrin supramolecular natural slow-release bacteriostatic agent for preservation of fruit skin.

[0033] Preparation of β-cyclodextrin and perilla essential oil solution: Take an appropriate amount of β-cyclodextrin powder and dissolve it in deionized water to prepare a 2% (weight percentage, the same below) β-cyclodextrin solution. Perilla essential oil was dissolved in ethanol to prepare a 25% (w / v) solution of perilla essential oil according to the mass ratio of core wall material 1:8.

[0034] Embedding: Mix cyclodextrin solution and perilla essential oil solution at a volume ratio of 90:1, seal the vessel, and stir magnetically at 200 rpm for 4 h at 50 °C.

[0035] Dry the sample: filter the embedding reaction solution first to remove excess cyclodextrin, freeze the filtrate at -20°C for 24 h, then freeze-dry for 48 h, and store in a cool place after freeze-drying.

[0036] Preheating of starch disp...

Embodiment 2

[0042] This example provides a composite packaging film containing hydroxypropyl-β-cyclodextrin supramolecular natural slow-release antibacterial agent for fresh-keeping pork jerky.

[0043] Preparation of hydroxypropyl-β-cyclodextrin and perilla essential oil solution: take an appropriate amount of hydroxypropyl-β-cyclodextrin powder and dissolve it in deionized water to prepare 6% (weight percentage, the same below) hydroxypropyl - Beta-cyclodextrin solution. Perilla essential oil was dissolved in ethanol to prepare 60% perilla essential oil solution (w / v) according to the mass ratio of core wall material 1:10.

[0044] Embedding: Mix cyclodextrin solution and perilla essential oil solution at a volume ratio of 90:1, seal the vessel, and stir magnetically at 200 rpm for 4 h at 50 °C.

[0045] Dry the sample: filter the embedding reaction solution first to remove excess cyclodextrin, freeze the filtrate at -25 °C for 30 h, then freeze-dry for 48 h, and store in a cool place ...

Embodiment 3

[0052] This example provides a composite packaging film containing hydroxypropyl-β-cyclodextrin supramolecular natural slow-release antibacterial agent for keeping bread fresh.

[0053] Preparation of hydroxypropyl-β-cyclodextrin and perilla essential oil solution: take an appropriate amount of hydroxypropyl-β-cyclodextrin powder and dissolve it in deionized water to prepare 5% (weight percentage, the same below) hydroxypropyl - Beta-cyclodextrin solution. Perilla essential oil was dissolved in ethanol to prepare 55% perilla essential oil solution (w / v) according to the mass ratio of core wall material 1:9.

[0054] Embedding: Mix cyclodextrin solution and perilla essential oil solution at a volume ratio of 100:1, seal the vessel, and stir magnetically at 200 rpm for 4 h at 50 °C.

[0055] Dry the sample: filter the embedding reaction solution first to remove excess cyclodextrin, freeze the filtrate at -20 °C for 48 h, then freeze-dry for 48 h, and store in a cool place after...

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Abstract

The invention belongs to the technical field of edible films, and relates to a preparation method of an antibacterial active food packaging film. After konjac glucomannan and glycerol are added into starch to prepare a composite film, aggregation rearrangement acting force among amylose molecules can be weakened, defects of large brittleness and poor ductility of a high amylose corn starch film can be overcome, and the edible packaging film with low heat can be produced after compounding according to the characteristic that the konjac glucomannan is rich in dietary fibers and is not easily digested and absorbed by a human body. Perilla essential oil-cyclodextrin inclusion is added into a high-amylose corn starch-konjac glucomannan mixed dispersion system to prepare an active film, so thatthe surface of the film is smooth, the structure is perfect and uniform, the composite film can be endowed with bacteriostatic and antiseptic effects, perilla essential oil is intelligently slowly released along with change of a surrounding environment during food storage, and the bacteriostatic effect lasts for a long time.

Description

technical field [0001] The invention belongs to the technical field of edible films, and relates to a preparation method of an antibacterial active food packaging film, in particular to a preparation method of a composite edible film containing high amylose corn starch and konjac glucomannan containing antibacterial components. Background technique [0002] With the growth of population and the advancement of modernization, the problem of environmental pollution caused by the abuse of petroleum-based materials is imminent. According to statistics, in 2016, about 3.3 billion plastic bags were consumed worldwide every day, and the white pollution problem caused by the extensive use of plastic bags has already attracted widespread attention. Therefore, in 2015, the 28 EU countries passed regulations to reduce the use of thin plastic bags, and in December 2018 passed a proposal to ban various disposable plastic products. In fact, as early as 2008, China had already implemented ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L3/02C08L5/02C08L91/00C08K5/053A23L3/3562
CPCA23L3/3562C08J5/18C08J2303/02C08J2405/02C08J2491/00C08K5/053A23P20/20A23L29/35B65D65/463
Inventor 袁超邹艺源崔波郭丽于滨方奕珊
Owner QILU UNIV OF TECH
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