Preparation method and application of polylactic acid/chitosan/honeysuckle chlorogenic acid nanofiber membrane

A technology of honeysuckle chlorogenic acid and nanofiber membranes, applied in the fields of application, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of low fiber membrane strength, antibacterial and anticorrosion performance that cannot meet practical application requirements, and difficult antibacterial Function and other issues

Active Publication Date: 2021-07-27
LINYI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves how we protect from harmful bacteria that can cause damage in stored products during storage or transportation. By developing better ways to prevent this type of contaminating activity, it becomes possible to use less expensive but effective methods like antimicrobial agents instead of relying on chemicals which are becoming more difficult to dispose off safely due to their negative environmental impact.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the storage stability and shelf life of preserved produce items like cherries due to their vulnerabilities towards biodiesel fuel leakages that cause harmful effects upon human body health. Current methods involve adding chemical agents during production processes but they may negatively influence product quality and reduce nutritional value. Nanoparsists provide new ways to improve these challengings while maintaining long term benefits.

Method used

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  • Preparation method and application of polylactic acid/chitosan/honeysuckle chlorogenic acid nanofiber membrane
  • Preparation method and application of polylactic acid/chitosan/honeysuckle chlorogenic acid nanofiber membrane
  • Preparation method and application of polylactic acid/chitosan/honeysuckle chlorogenic acid nanofiber membrane

Examples

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Embodiment 1

[0033] A preparation method of polylactic acid / chitosan / honeysuckle chlorogenic acid nanofiber membrane, comprising extraction and electrospinning of honeysuckle chlorogenic acid.

[0034] Further, the extraction method of honeysuckle chlorogenic acid is:

[0035] S1: Wash and dry the honeysuckle flower and crush it to below 200 mesh to obtain the honeysuckle powder, which is set aside;

[0036] S2: adding honeysuckle powder into a mixed solution of ethanol and ethyl acetate, soaking for 5 hours, and performing microwave extraction;

[0037] S3: Ultrasonic treatment after microwave extraction, and then filtration. The filtrate is saturated and adsorbed through a macroporous resin adsorption column. After adsorption, it is eluted with ethanol aqueous solution. The eluate is collected, concentrated, and solvent-removed to obtain chlorogenic acid.

[0038] Further, the solid-liquid ratio of the mixed solution of honeysuckle, ethanol and ethyl acetate in step S2 is 40:1mL·g -1 ;...

Embodiment 2

[0045] A preparation method of polylactic acid / chitosan / honeysuckle chlorogenic acid nanofiber membrane, comprising extraction and electrospinning of honeysuckle chlorogenic acid. The extraction part of honeysuckle chlorogenic acid is the same as that in Example 1.

[0046] Further, the method of electrospinning is:

[0047]A1: Chitosan and polylactic acid were mixed and added to hexafluoroisopropanol according to the mass ratio of 1:1 to prepare a spinning solution with a concentration of 10% w / v, and then the extracted honeysuckle chlorogenic acid was added. Stir at a constant temperature for 12 hours to obtain a spinning solution;

[0048] A2: Put the electrospinning blend liquid into the syringe, and use the DP30 electrospinning equipment to carry out electrospinning, the voltage is set to 25kV, and the advancing speed is 0.01mm / h; the receiving material is set to aluminum foil, and the spinning needle is sent to the receiving device The distance between them is 10cm. Af...

Embodiment 3

[0052] A preparation method of polylactic acid / chitosan / honeysuckle chlorogenic acid nanofiber membrane, comprising extraction and electrospinning of honeysuckle chlorogenic acid. The extraction part of honeysuckle chlorogenic acid is the same as that in Example 1.

[0053] Further, the method of electrospinning is:

[0054] A1: Chitosan and polylactic acid were mixed and added to hexafluoroisopropanol according to the mass ratio of 1:1 to prepare a spinning solution with a concentration of 10% w / v, and then the extracted honeysuckle chlorogenic acid was added. Stir at a constant temperature for 12 hours to obtain a spinning solution;

[0055] A2: Put the electrospinning blend liquid into the syringe, and use the DP 30 electrospinning equipment to carry out electrospinning, the voltage is set to 25kV, and the advancing speed is 0.01mm / h; set the receiving material to aluminum foil, and the spinning needle to the receiving The distance between the devices is 10cm. After the s...

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Abstract

The invention discloses a preparation method and application of a polylactic acid/chitosan/honeysuckle chlorogenic acid nanofiber membrane, and belongs to the technical field of nanofiber materials. Honeysuckle that can be used both as medicine and foodstuff is subjected to microwave assisted ultrasonic treatment to extract high-purity chlorogenic acid, the chlorogenic acid and chitosan are added into a spinning solution together, electrostatic spinning is performed to obtain a nanofiber membrane, and the nanofiber membrane is matched with the good extension effect of the chitosan, so that the honeysuckle chlorogenic acid is uniformly distributed in membrane filaments, and the honeysuckle chlorogenic acid and the chitosan have a synergistic effect, and jointly play a role in efficiently inhibiting and resisting bacteria. The used materials are all green degradable materials, the honeysuckle belongs to edible antibacterial agents that can be used both as medicine and foodstuff, and the prepared fresh-keeping antibacterial material is green and environmentally friendly, has efficient bacteriostatic and antibacterial effects, and is particularly suitable for bacteriostatic and fresh-keeping of small berries such as blueberries, aronia, strawberries and grapes. The preparation process is simple and convenient to operate, and has a wide market application prospect.

Description

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Claims

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Application Information

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Owner LINYI UNIVERSITY
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