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Method for preparing dandelion phenol activity antibacterial agent and chitosan composite nanofiber felt

A technology of composite nanofibers and dandelions, which is applied in the directions of fiber processing, fiber chemical characteristics, rayon manufacturing, etc., achieves the effects of simple preparation, high porosity, and simple and easy method.

Inactive Publication Date: 2016-06-22
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above reasons, it is of great significance to prepare a new type of plant active antibacterial agent composite nanofiber mat, and the current research literature and patent related content are very few

Method used

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  • Method for preparing dandelion phenol activity antibacterial agent and chitosan composite nanofiber felt
  • Method for preparing dandelion phenol activity antibacterial agent and chitosan composite nanofiber felt
  • Method for preparing dandelion phenol activity antibacterial agent and chitosan composite nanofiber felt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 500 grams of air-dried samples of dandelion medicinal materials, cut them into small pieces, heat and extract twice with 50% ethanol aqueous solution, use 8 times the amount for the first time, and use 6 times the amount for the second time. The first extraction was 2 hours, the second extraction was 1.5 hours, concentrated, loaded on the treated macroporous adsorption resin, washed with water until the color was lighter, and then eluted with 50% ethanol until the color was light, and the eluent was reduced. Compression recovery, spray drying to obtain raw material fine powder, that is, dandelion phenol active antibacterial agent.

[0027] Dissolve 0.6 gram of chitosan in 15 ml of formic acid (mass volume concentration 88%), and magnetically stir until completely dissolved to obtain a chitosan solution with a concentration of 0.04 g / ml.

[0028] Take 0.006 g of dandelion phenol active antibacterial agent and add it to the prepared chitosan solution and mix it, stir...

Embodiment 2

[0032] Take 1000 grams of fresh dandelion plants, wash and cut into small pieces, heat and extract three times with 50% ethanol aqueous solution, use 10 times the amount for the first time, use 8 times the amount for the second time, and use 6 times the amount for the second time. The first extraction was 3 hours, the second extraction was 2 hours, the third extraction was 1 hour, concentrated, loaded on the treated macroporous adsorption resin, washed with water until the color was lighter, and then eluted with 50% ethanol to The color is light, the eluent is recovered under reduced pressure, and the fine powder of the raw material is obtained by spray drying, that is, the active antibacterial agent of dandelion phenol is obtained.

[0033] Dissolve 0.75 gram of chitosan in 15 ml of formic acid (mass volume concentration 88%), and magnetically stir until completely dissolved to obtain a chitosan solution with a concentration of 0.05 g / ml.

[0034] Take 0.008 gram of plant act...

Embodiment 3

[0038] Take 600 grams of air-dried dandelion medicinal samples, cut into small pieces, heat and extract twice with 50% ethanol aqueous solution, use 8 times the amount for the first time, and use 5 times the amount for the second time. The first extraction was for 3 hours, the second extraction was for 1.5 hours, concentrated, loaded on the treated macroporous adsorption resin, washed with water until the color was lighter, and then eluted with 50% ethanol until the color was light, and the eluent was reduced. Compression recovery, spray drying to obtain raw material fine powder, that is, dandelion phenol active antibacterial agent.

[0039] Dissolve 0.3 gram of chitosan in 10 ml of formic acid (mass volume concentration 88%), and magnetically stir until completely dissolved to obtain a chitosan solution with a concentration of 0.05 g / ml.

[0040] Take 0.003 g of plant active antibacterial agent and add it into the prepared chitosan solution and mix, magnetically stir for 2 hour...

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Abstract

The invention relates to a method for preparing dandelion phenol activity antibacterial agent and chitosan composite nanofiber felt. The method comprises the steps of dissolving chitosan in formic acid solution, and performing stirring to obtain chitosan solution; adding a dandelion phenol activity antibacterial agent extracted from plants, performing stirring and ultrasonic degassing to obtain dandelion phenol activity antibacterial agent / chitosan solution; and performing electrostatic spinning to obtain the felt. The method is simple and practical and is apt to industrialization; the obtained plant activity antibacterial agent and chitosan composite nanofiber felt can be used for the fields such as wound dressing, is excellent is antibacterial effect and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of preparation of antibacterial polymer nanofiber materials, in particular to a preparation method of a composite nanofiber felt of dandelion active antibacterial agent and chitosan. Background technique [0002] There are narrow and broad definitions of nanofibers. Nanofibers in a narrow sense refer to fibers whose diameter is in the range of nanoscale, that is, defined as fibers with a diameter of 1-100 nm. Nanofibers in a broad sense mean that as long as the fibers contain nanostructures and are endowed with new physical properties, they can be classified into the category of nanofibers. Electrospinning is an important method for preparing continuous nanofibers and is expected to be industrialized. Electrospinning is to bring the polymer solution or melt to thousands to tens of thousands of volts of high-voltage static electricity, and the charged polymer droplets are accelerated at the apex of the Taylor cone of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/00D01D1/10D01F9/00D01F1/10
CPCD04H1/728D01D1/103D01D5/0069D01D5/0076D01D5/0092D01F1/103D01F9/00D04H1/4382
Inventor 刘保江张帅
Owner DONGHUA UNIV
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