A kind of preparation method of polysaccharide nano-silver particle of Adenophora japonicus
A technology of nano-silver particles and Adenophora japonicus, applied in the field of preparation of nano-composite materials, can solve the problems of affecting the antibacterial performance of nano-silver particles, complex preparation methods, and unevenness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043] A preparation method of polysaccharide nano-silver particles of Adenophora japonicus comprises the following process steps:
[0044] Extraction of polysaccharides from North Radix Ginseng:
[0045] a. Grind Adenophora to a particle size of 40 mesh, add an 85vt% ethanol solution 5 times the mass of Adenophora, heat at 75°C for 2h, filter with suction and dry the residue of Adenophora, remove the Adenophora in the air fat-soluble compounds;
[0046]b. Add the degreased Adenophora japonicus residue into distilled water 30 times its mass, ultrasonically extract at 55°C and 200W ultrasonic power for 20min, then heat to 75°C, extract for 2h, filter to obtain the extract, and the remaining Repeat the above extraction process for the residue again, combine the two extracts, and use a rotary evaporator to concentrate it under reduced pressure until the content of Adenophora polysaccharides in the concentrate is 2.5wt%; add 4 times the volume of the concentrate to the concentrat...
Embodiment 2
[0088] A preparation method of polysaccharide nano-silver particles of Adenophora japonicus comprises the following process steps:
[0089] a. Grind Adenophora to a particle size of 45 mesh, add 90vt% ethanol solution 5 times the mass of Adenophora, heat at 80°C for 2h, filter with suction and dry the residue of Adenophora, remove the Adenophora in the air fat-soluble compounds;
[0090] b. Add the degreased Adenophora japonicus residue into distilled water 32 times its mass, ultrasonically extract at 60°C and 200W ultrasonic power for 25min, then heat to 80°C, extract for 2h, filter to obtain the extract, and the remaining Repeat the above extraction process for the residue again, combine the two extracts, and use a rotary evaporator to concentrate it under reduced pressure until the content of Adenophora polysaccharides in the concentrate is 2.5wt%; add 4 times the volume of the concentrate to the concentrate The ethanol was left at 4°C for 12 hours, the precipitate was col...
Embodiment 3
[0103] A preparation method of polysaccharide nano-silver particles of Adenophora japonicus, comprising the following process steps:
[0104] a. Grind Adenophora to a particle size of 50 mesh, add 95vt% ethanol solution of 6 times the mass of Adenophora, heat at 85°C for 3h, filter with suction and dry the residue of Adenophora, remove the Adenophora in the air fat-soluble compounds;
[0105] b. Add the degreased Adenophora japonicus residue into distilled water 35 times its mass, ultrasonically extract at 65°C and 200W ultrasonic power for 30min, then heat to 85°C, extract for 3h, filter to obtain the extract, and the remaining Repeat the above extraction process for the residue again, combine the two extracts, and use a rotary evaporator to concentrate it under reduced pressure until the content of the polysaccharides in the concentrated solution is 3 wt%. Add 5 times the volume of the concentrated solution to the concentrated solution. Ethanol, standing at 6°C for 15h, col...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| wavelength | aaaaa | aaaaa |
| particle size (mesh) | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More