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A kind of preparation method of yew fiber with high antibacterial activity

An antibacterial activity, Taxus chinensis technology, which is applied in the directions of fiber chemical characteristics, wet spinning, rayon manufacturing, etc., can solve the problems of poor antibacterial properties, insufficient medicinal properties of Taxus chinensis fibers, and low taxol content, and achieves the effect of solving poor antibacterial properties.

Active Publication Date: 2019-11-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low paclitaxel content in the yew branches, the prepared yew fiber has insufficient medicinal properties and poor antibacterial properties

Method used

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  • A kind of preparation method of yew fiber with high antibacterial activity

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 3 parts by weight of a long-chain fatty alcohol template, 12 parts by weight of ethanol, and 2 parts by weight of water were magnetically stirred at room temperature for 5 minutes, and 3 parts by weight of tetrabutyl titanate were added dropwise at a rate of 2 drops / second, and stirred for 10 After 2 minutes, add 2 parts by weight of ammonia water dropwise, and after magnetic stirring for 2 hours, add 16 wt% chitosan solution dropwise, after aging for 12 hours, after rotary distillation, the remaining emulsion is centrifuged, and the precipitate is washed twice with ethanol and water mixed solution. The product was placed in an oven at 90°C for 12 hours to obtain monodisperse nano-TiO 2 . 3 parts by weight of monodisperse nano-TiO 2 Dispersed in 25 parts by weight of ethanol, and then uniformly added dropwise to 100 parts by weight of concentrated slurry extracted from yew wood; uniformly stirred and further concentrated at 40 ° C to remove ethanol in the concentrated ...

Embodiment 2

[0015] 4 parts by weight of long-chain fatty alcohol template agent, 19 parts by weight of ethanol, and 2 parts by weight of water were magnetically stirred at room temperature for 5 minutes, and 4 parts by weight of tetrabutyl titanate were added dropwise at a speed of 3 drops / second, and stirred for 10 Minutes later, 5 parts by weight of ammonia were added dropwise, after magnetic stirring for 2 hours, 20 wt% chitosan solution was added dropwise, after 12 hours of aging, the remaining emulsion was centrifuged by rotary distillation, and the precipitate was washed 3 times with a mixed solution of ethanol and water. The product was placed in an oven at 90°C for 12 hours to obtain monodisperse nano-TiO 2 . 5 parts by weight of monodisperse nano-TiO 2 Dispersed in 30 parts by weight of ethanol, and then evenly added dropwise to 100 parts by weight of the concentrated slurry extracted from yew wood; uniformly stirred and further concentrated at 50 ° C to remove ethanol in the co...

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Abstract

The invention discloses a preparation method of taxus chinensis fibers with high antibacterial activity and belongs to the field of functional fibers. The content of paclitaxel in branches of taxus chinensis is lower, so that the prepared taxus chinensis fibers have poor drug property and poorer antibacterial property. On the basis that the antibacterial property of existing taxus chinensis fibers is kept, the antibacterial property of the fibers is enhanced by adding chitosan-modified monodispersed nano TiO2, the problems that the existing taxus chinensis fibers have poor drug property and the antibacterial property is not lasting are solved, and the application range of the taxus chinensis fibers is enlarged.

Description

technical field [0001] The invention relates to a preparation method of yew fiber with high antibacterial activity, belonging to the field of functional fibers. Background technique [0002] The genus Taxus (Taxus) of the family Taxaceae is a relic plant of the 3rd period, and has survived and multiplied on the earth for 2.5 million years. In the 1970s, Wani et al. extracted and isolated the natural anticancer compound paclitaxel from Taxus brevifolia, which has a unique effect of inhibiting microtubule depolymerization and stabilizing microtubules. The medicinal value of yew plants has attracted great attention from worldwide research institutions and pharmaceutical companies. Among the more than 200 components isolated from Taxus plants, the taxane diterpenoids and alkaloids with strong anticancer activity are particularly eye-catching. However, due to the slow growth of Taxus chinensis, the shortage of resources, and the low content of active ingredients in the bark, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/00D01F1/10D01D5/06
CPCD01D5/06D01F1/103D01F9/00
Inventor 殷允杰张亮贾济如王潮霞
Owner JIANGNAN UNIV