Preparation method of bacterial cellulose composite chitosan moist antimicrobial dressing
A composite chitosan wetness and bacterial cellulose technology, which is applied in the fields of medical science, textiles, papermaking, bandages, etc., can solve the problems of performance degradation and application limitations of bacterial cellulose materials, and achieve low cost and simple preparation process , the effect of prolonging the use time
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Embodiment 1
[0020] (1) Activate Acetobacter xylinum to prepare seed mash, then evenly drop the seed mash with a strain concentration of 10% on the sterilized polyester non-woven fabric or woven fabric, and add a small amount of fermentation medium after 5 minutes . The amount of fermentation medium added is controlled so that the distance from the liquid surface of the medium to the bottom of the culture container is 5 mm, the temperature of the fermentation culture is 25° C., and the time is 48 hours. Then add fermentation medium, wherein the amount of fermentation medium added is controlled at a distance of 20 mm from the liquid surface of the medium to the bottom of the culture container, the fermentation temperature is 30° C., and the culture time is 6 days. The fermentation product is purified to obtain bacterial cellulose composite polyester non-woven fabric or woven fabric membrane material. The upper layer is a bacterial cellulose film, the lower layer is a non-woven fabric or a ...
Embodiment 2
[0023] (1) Activate Acetobacter xylinum to prepare seed mash, then evenly drop the seed mash with a strain concentration of 30% on the sterilized nylon non-woven fabric or woven fabric, and add a small amount of fermentation medium after 6 minutes . The amount of fermentation medium added is controlled so that the distance from the liquid surface of the medium to the bottom of the culture container is 8 mm, the temperature of the fermentation culture is 28° C., and the time is 40 h. Then add fermentation medium, wherein the amount of fermentation medium added is controlled at a distance of 25 mm from the liquid surface of the medium to the bottom surface of the culture container, the temperature of the fermentation culture is 32° C., and the culture time is 6 days. The fermentation product is purified to obtain bacterial cellulose composite nylon non-woven fabric or woven fabric membrane material. The upper layer is a bacterial cellulose film, the lower layer is a non-woven f...
Embodiment 3
[0026] (1) Activate Acetobacter xylinum to prepare seed mash, and then evenly drop the seed mash with a strain concentration of 60% on the sterilized viscose fiber non-woven or woven cloth, and add a small amount of fermentation after 7 minutes Medium. The amount of fermentation medium added is controlled so that the distance from the liquid surface of the medium to the bottom of the culture container is 10 mm, the temperature of the fermentation culture is 30° C., and the time is 32 hours. Then add fermentation medium, wherein the amount of fermentation medium added is controlled at a distance of 30 mm from the liquid surface of the medium to the bottom of the culture vessel, the temperature of the fermentation culture is 34° C., and the culture time is 5 days. The fermentation product is purified to obtain bacterial cellulose composite viscose fiber non-woven fabric or woven fabric membrane material. The upper layer is a bacterial cellulose film, the lower layer is a non-wo...
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