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Preparation method of antibacterial nanofiber membrane

A technology of nanofiber membrane and electrospun membrane, which is applied in the direction of textiles, papermaking, non-woven fabrics, etc., can solve the problems that the safety, stability and antibacterial performance of antibacterial nanofiber membranes cannot meet the requirements, and achieve excellent safety, The effect of low cost and simple and easy-to-operate preparation method

Pending Publication Date: 2021-09-21
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing antibacterial nanofibrous membranes cannot meet the requirements in terms of safety, stability and antibacterial performance.

Method used

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  • Preparation method of antibacterial nanofiber membrane
  • Preparation method of antibacterial nanofiber membrane
  • Preparation method of antibacterial nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The comparison of embodiment 1 antibacterial agent

[0025] Dissolve 12.5g of gelatin in 100mL of acetic acid solution (80% v / v distilled water), stir on a magnetic stirrer for 15 minutes at 50-55°C to obtain a clear and uniform solution; add 2.5g of zein to the above In the solution, magnetically stir again at 50-55° C. for 15 minutes until it becomes transparent to obtain a gelatin-zein electrospinning solution, which is marked as G / Z, and the electrospun film is recorded as a G / Z film. Add 50mg of perillaldehyde, thymol (abbreviated as T) and ε-polylysine (abbreviated as ε-PL) to 100ml G / Z solution respectively, and stir at 20-25°C for 24h to obtain 3 different static electricity The spinning solutions are marked as G / Z / P, G / Z / T and G / Z / ε-PL, respectively, and the membranes obtained after electrospinning are marked as G / Z / P, G / Z / T and G / Z, respectively / ε-PL film. Taking the G / Z film without adding antibacterial agent as the blank control, the effects of loading th...

Embodiment 2

[0032] Embodiment 2 antibacterial nanofiber film

[0033] 1. Preparation of Antibacterial Nanofiber Membranes

[0034] Add 2.5g of gelatin to 20mL of 80% (volume percent) glacial acetic acid aqueous solution, stir in a water bath at 55°C for 0.5h to dissolve the gelatin, then add 0.5g of zein, stir for 8min to dissolve the zein The protein was dissolved and cooled to room temperature to obtain a gelatin-zein electrospinning solution. Using tween-80 as a solvent, prepare a 25% (mass percent concentration) perillaldehyde solution. The perillaldehyde solution was added to the gelatin-zein electrospinning liquid, and the electrospinning membrane blends with the perillaldehyde content of 62.5, 125, 250, 500, and 1000 μg / mL were prepared.

[0035] Use the DP30 electrospinning apparatus (Tianjin Yunfan Technology Co., Ltd.) to electrospin the electrospun membrane blends separately. The specific method is as follows: put the electrospun membrane blends into a 5ml syringe, and connec...

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Abstract

The invention provides a preparation method of an antibacterial nanofiber membrane, and relates to the field of food preservation. The preparation method of the antibacterial nanofiber membrane is characterized by comprising the following step of preparing an electrospinning membrane blending solution containing 100-140 g / L of gelatin, 10-30 g / L of zein and 50-1000 mg / L of perillaldehyde by adopting an electrospinning technology to obtain the antibacterial nanofiber membrane. The preparation method of the antibacterial nanofiber membrane is simple and low in cost, and the prepared nanofiber membrane has excellent safety, antibacterial activity, stability and ductility and relatively high tensile strength.

Description

technical field [0001] The invention relates to the field of food preservation, in particular to a preparation method of an antibacterial nanofiber film. Background technique [0002] With the improvement of living standards, people are gradually pursuing health, nutrition and dietary diversification, especially the increasing demand for fresh foods such as fruits, vegetables, meat and aquatic products. The freshness of fresh food is an important indicator for consumers. Fresh food is faced with microbial spoilage during refrigeration and sales, resulting in a short shelf life. Therefore, the development of antimicrobial packaging materials is the key to ensuring the quality of fresh food and extending the shelf life of food. However, the existing antibacterial nanofibrous membranes cannot meet the requirements in terms of safety, stability and antibacterial performance. Contents of the invention [0003] The purpose of the present invention is to provide a preparation ...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728
CPCD04H1/4382D04H1/728
Inventor 刘芳王德宝孙芝兰吴海虹王道营孙远成严敏
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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