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Hydrophobic nanofiber membrane containing plant essential oil and preparation method and application thereof

A technology of nanofiber film and plant essential oil, applied in the field of nanomaterials and hydrophobic food packaging materials, can solve the problems of unsuitability for packaging, unsatisfactory antibacterial durability of fiber film, poor stability of essential oil, etc., so as to improve the stability Effect

Inactive Publication Date: 2014-08-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyvinyl alcohol / cinnamon essential oil / β-cyclodextrin nanofibrous film prepared by publication number CN103266424A and its preparation method and application, the difference is: (1) the stability of the essential oil in this method is not good enough, and the inhibition of the fiber film is obtained. (2) The polyvinyl alcohol / cinnamon essential oil / β-cyclodextrin nanofiber film has strong hydrophilicity and will cling to the surface of meat products, so it is not suitable for packaging of meat products, etc.

Method used

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  • Hydrophobic nanofiber membrane containing plant essential oil and preparation method and application thereof
  • Hydrophobic nanofiber membrane containing plant essential oil and preparation method and application thereof
  • Hydrophobic nanofiber membrane containing plant essential oil and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]A preparation method of inclusion compound containing plant essential oil / β-cyclodextrin, the specific steps are as follows:

[0041] (1) Dissolve 9g of β-cyclodextrin in 90mL of solvent (ethanol:water=1:2), stir at 55°C at 250r / min for 2h to obtain a 10% β-cyclodextrin solution;

[0042] (2) 0.5g cinnamon essential oil is dissolved in 5mL of ethanol;

[0043] (3) Slowly add the solution in (2) dropwise to the β-cyclodextrin solution in (1), stir for 3 hours at 55°C at a speed of 250r / min, then cool to room temperature, and store in a refrigerator at 4°C overnight;

[0044] (4) The solution in (3) is subjected to vacuum filtration, and the obtained filter cake is subjected to freeze-drying at -80° C., and the finally obtained white powder is cinnamon essential oil / β-cyclodextrin inclusion complex.

[0045] The cinnamon essential oil / β-cyclodextrin inclusion compound prepared under the above process conditions is shown in figure 1 (a)(b).

Embodiment 2

[0047] A kind of preparation method of nanofibrous film, concrete steps are as follows:

[0048] (1) Prepare solvent volume ratio DCM:DMF=3:1;

[0049] (2) 10g of polylactic acid was dissolved in 100mL of the above solvent, and stirred for 2 hours in a magnetic stirrer to obtain a 10% polylactic acid solution;

[0050] (3) Inhale the solution prepared in (2) into a 10mL syringe as a spinning solution, install a needle with a diameter of 0.6mm, adjust the distance from the needle to the receiver to 14cm, the voltage at 15kV, the flow rate at 2.5mL / h, and the temperature at 27 ℃, humidity 60%, spinning for 4 hours; then vacuum drying at 35 ℃ for 12 hours to obtain polylactic acid nanofiber membrane.

[0051] The SEM and particle size distribution of the nanofibrous membrane prepared under the above process conditions are shown in figure 2 .

Embodiment 3

[0053] A preparation method of a hydrophobic nanofibrous membrane containing plant essential oils, the specific steps are as follows:

[0054] (1) Prepare solvent volume ratio DCM:DMF=3:1;

[0055] (2) 10g of polylactic acid was dissolved in 100mL of the above solvent, and stirred for 2 hours in a magnetic stirrer to obtain a 10% polylactic acid solution;

[0056] (3) Add 10 g of the cinnamon essential oil / β-cyclodextrin inclusion compound (10% by mass fraction) of Example 1 to the polylactic acid solution in (2) above, and stir at room temperature for 2 hours to obtain the desired spinning silk solution;

[0057] (4) Inhale the spinning solution obtained in (3) into a 10mL syringe, install a needle with a diameter of 0.6mm, adjust the distance from the needle to the receiver to 14cm, the voltage at 15kV, the flow rate at 2.5mL / h, and the temperature at 20±2°C , relative humidity 40±2%, spinning for 4 hours; then vacuum drying at 35° C. for 12 hours to obtain polylactic acid...

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Abstract

The invention belongs to the fields of nanometer materials and antimicrobial packaging materials for foods, and discloses a hydrophobic nanofiber membrane containing plant essential oil and a preparation method and an application thereof. The preparation method comprises the following steps: 1, preparing cinnamon essential oil / [beta]-cyclodextrin inclusion compound; 2, preparing polylactic acid solution with the mass concentration of 5%-25%; 3, adding the cinnamon essential oil / [beta]-cyclodextrin inclusion compound with the mass concentration of 5%-20% into the solution obtained in the step 2, and stirring to obtain spinning solution; 4, sucking the spinning solution into an syringe, installing a syringe needle with the diameter of 0.6-0.8mm, adjusting the distance between the syringe needle and a receiver to be 8-20cm, spinning for 3-6h under conditions that the voltage is 7-25kV and the flow rate of the spinning solution is 1.5-4mL / h, drying and thus obtaining the hydrophobic nanofiber membrane containing plant essential oil. The hydrophobic nanofiber membrane containing plant essential oil has good bactericidal effect, and can well prolong quality guarantee periods of meat products and the like, thus being capable of serving as the packaging material for foods.

Description

technical field [0001] The invention belongs to the field of nanometer materials and hydrophobic food packaging materials, and in particular relates to a method for preparing plant essential oils into polylactic acid / cinnamon essential oil / beta-cyclodextrin antibacterial nanofiber membranes by using electrospinning technology and its application. Background technique [0002] With the improvement of people's requirements for food safety and nutrition, consumers are more and more inclined to choose food packaging methods that do not contain preservatives, have no microbial contamination, and can maintain good food quality. The traditional food packaging method mainly isolates the contact between the external environment and the packaged food through physical means, and the packaging material itself does not have any biological activity. In order to prolong the shelf life of food, it is often necessary to add a large amount of preservatives to food, which brings about food saf...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728D01D5/00B65D65/38
CPCY02A40/90Y02W90/10
Inventor 吴虹温棚宗敏华朱定和
Owner SOUTH CHINA UNIV OF TECH
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