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A kind of preparation method of antibacterial active packaging film loaded with cinnamaldehyde essential oil

A technology of cinnamaldehyde essential oil and antibacterial activity is applied in the field of preparation of antibacterial active packaging films, which can solve the problems of high requirements, small β-cyclodextrin loading, affecting the release performance of essential oils, etc., and achieves enhanced tensile strength and convenient release. Effect

Active Publication Date: 2021-03-19
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the loading mode and loading capacity of antibacterial active substances in the packaging is an important factor in the design of antibacterial active packaging: 1. General fiber film / essential oil antibacterial active packaging usually uses carrier embedding or coaxial electrospinning to load essential oils in the packaging , both of these methods have some disadvantages: the commonly used β-cyclodextrin load is small (relevant tests show that when the cyclodextrin addition in the package is 10%, the content of essential oil is only 11.72 μg / 1000 μg film); However, coaxial electrospinning has high requirements on the compatibility of polymers and solvents and spinning equipment.
2. The carrier of some essential oils, such as β-cyclodextrin, and secondary bonds such as hydrogen bonds in essential oils may affect the release performance of essential oils when used at low temperatures
In order to meet the needs of antibacterial, adding more carriers may destroy the continuity of the fiber, and it is not conducive to the stability of the spinning process

Method used

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  • A kind of preparation method of antibacterial active packaging film loaded with cinnamaldehyde essential oil
  • A kind of preparation method of antibacterial active packaging film loaded with cinnamaldehyde essential oil
  • A kind of preparation method of antibacterial active packaging film loaded with cinnamaldehyde essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take 20 mL of a mixed solvent obtained by dehydrated ethanol and purified water at a ratio of 1:1 by volume, weigh 2.0 g of polyvinylalcohol (PVA) and 0.2 g of zeolite into the mixed solvent, and perform magnetic stirring at 80° C. for 8 h (Little Tony, IKA, Germany) to obtain a polyvinyl alcohol / zeolite dispersion. Add 0.25 mL of cinnamaldehyde essential oil to the polyvinyl alcohol / zeolite dispersion, continue to stir for 2 hours until it becomes translucent milky white, stop stirring, and let it stand at room temperature for 2 hours to remove small bubbles in the solution to obtain spinning solution B.

[0042] The above-mentioned spinning solution B was taken to carry out electrospinning to prepare ultrafine fiber membranes, and the spinning parameters were: voltage: 12KV, needle type: 18G, polar distance (distance from the needle to the receiver): 15cm, and the receiver was in the form of a drum. Cover with a layer of aluminum foil paper for food, the speed is 100r...

Embodiment 2

[0044] Take 20 mL of a mixed solvent obtained by dehydrated ethanol and purified water at a ratio of 1:1 by volume, weigh 2.0 g of polyvinylalcohol (PVA) and 0.2 g of zeolite into the mixed solvent, and perform magnetic stirring at 80° C. for 8 h (Little Tony, IKA, Germany) to obtain a polyvinyl alcohol / zeolite dispersion. After the stirring is completed, add 0.50 mL of cinnamaldehyde essential oil and continue to stir for 2 hours until it becomes translucent and milky white, then stop stirring and let stand at room temperature for 2 hours to remove small bubbles in the solution to obtain spinning solution B.

[0045] The above-mentioned spinning solution is taken to carry out electrospinning to prepare ultrafine fiber membranes. The spinning parameters are: voltage: 13KV, needle type: 18G, pole distance (distance from needle to receiver): 15cm, receiver is in the form of a drum, and coated A layer of aluminum foil paper for food, the rotating speed is 100r / min, the spinning l...

Embodiment 3

[0047] Take 20mL of a mixed solvent obtained by volume 1:1 of absolute ethanol and purified water, weigh 2.0g of polyvinylalcohol (PVA) and 0.2g of zeolite into the mixed solution, and carry out magnetic stirring at 92°C for 8h (Little Tony, IKA, Germany) to obtain a polyvinyl alcohol / zeolite dispersion. After the stirring is completed, add 0.75 mL of cinnamaldehyde essential oil and continue to stir for 2 hours until it becomes translucent and milky white, then stop stirring and let stand at room temperature for 2 hours to remove small bubbles in the solution to obtain spinning solution B.

[0048] Take the above-mentioned spinning solution B and carry out electrospinning to prepare ultra-fine fiber membranes. The spinning parameters are: voltage: 13KV, needle type: 18G, polar distance (distance from the needle to the receiver): 15cm, and the receiver is in the form of a drum. Cover with a layer of aluminum foil paper for food, the speed is 100r / min, the spinning liquid propu...

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Abstract

The invention relates to a preparation method of an antimicrobial active packaging film loaded with a cinnamyl aldehyde essential oil. The preparation method comprises the following steps of 1, takinga mixed solution obtained from absolute ethyl alcohol and purified water with a volume proportion of 1:1, weighting and taking a certain amount of polyving akohol and zeolite and adding into the mixed solution, conducting magnetic stirring under 80-95 DEG C, obtaining polyving akohol / zeolite dispersion liquids after stirring, adding the cinnamyl aldehyde essential oil, continuing to stir until the solution is in a subtransparent milk white state, stopping stirring, conducting sufficient standing in ultrasound or indoor temperature, eliminating small bubbles in the solution to obtain a spinning solution; 2, taking the spinning solution prepared in the step 1 to conduct electrostatic spinning so as to obtain a superfine fiber film, picking off the fiber film from an aluminum foil, wherein the fiber film is the antimicrobial active packaging film. The antimicrobial active packaging film has a good tensile property, is loaded with the cinnamyl aldehyde essential oil through mesoporous absorption, so that the load quantity of the cinnamyl aldehyde essential oil is larger, and the antimicrobial active packaging film is more applicable to low temperature scene release.

Description

[0001] (1) Technical field: [0002] The invention belongs to the field of anti-corrosion and fresh-keeping, and relates to a preparation method of an antibacterial active packaging film, in particular to a preparation method of an antibacterial active packaging film loaded with cinnamaldehyde essential oil through mesoporous adsorption. [0003] (2) Technical background: [0004] There are many different types of microorganisms in fresh fruits and vegetables, among which mold, yeast and pseudomonas are the main causes of spoilage of fresh-cut fruits and vegetables. Microbial spoilage will not only cause fresh-cut fruits and vegetables to lose their flavor and nutritional value, but also cause harm to consumers' health in severe cases. Although ordinary food preservation films such as PE and PVC preservation films have good physical barrier and tensile fracture performance, they cannot avoid the large-scale reproduction of microorganisms inside and on the surface of food. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4309D04H1/728D01F1/10D01D5/00B65D65/38
CPCB65D65/38D01D5/003D01D5/0061D01D5/0069D01D5/0092D01F1/10D01F1/103D04H1/4309D04H1/728
Inventor 邵平严志鹏刘勇陈杭君
Owner ZHEJIANG UNIV OF TECH
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