A repairing dressing containing ginseng extract and its preparation method
A technology of ginseng extraction and plant extracts, applied in bandages, medical science and other directions, can solve the problems of physical doping, inability to guarantee antibacterial properties, easy falling off, etc., and achieve high practicability, excellent water retention and moisturizing properties, and reasonable process design. Effect
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Embodiment 1
[0038] A preparation method of a repair dressing containing ginseng extract, comprising the following steps:
[0039] (1) Take starch, add 2 mL of sodium hydroxide, stir and mix for 20 min, alkalize at -18°C for 20 h, stand to thaw, then transfer to 50 mL of ethanol solution, stir and disperse for 1 h, add tris and benzyl ammonium chloride (catalyst) ), continue to stir for 10min, add 2-chloroethylamine hydrochloride, stir and react for 18h, filter and collect the product, wash, freeze-dry to obtain modified starch; the mass ratio of starch to 2-chloroethylamine hydrochloride is 1:2 .
[0040] (2) Take chitosan and acetic acid solution, mix and stir to obtain a mixed solution, the mass concentration of the mixed solution is 2.5%, spray the mixed solution into the sodium polyphosphate solution, react for 4 hours, take the precipitated beads, and transfer to sodium hydroxide Swell in the solution, add epichlorohydrin solution, continue the reaction for 24h, wash until neutral, ...
Embodiment 2
[0051] A preparation method of a repair dressing containing ginseng extract, comprising the following steps:
[0052] (1) Take starch, add 2 mL of sodium hydroxide, stir and mix for 25 min, alkalize at -18°C for 21 h, stand to thaw, then transfer to 50 mL of ethanol solution, stir and disperse for 1.2 h, add tris and benzyl ammonium chloride ( catalyst), continue stirring for 15min, add 2-chloroethylamine hydrochloride, stir and react for 19h, filter and collect the product, wash, freeze-dry to obtain modified starch; the mass ratio of starch to 2-chloroethylamine hydrochloride is 1: 2.
[0053] (2) Take chitosan and acetic acid solution, mix and stir to obtain a mixed solution, the mass concentration of the mixed solution is 2.5%, spray the mixed solution into the sodium polyphosphate solution, react for 4.5h, take the precipitated beads, and transfer them to hydroxide Swell in sodium solution, add epichlorohydrin solution, continue to react for 25h, wash until neutral, free...
Embodiment 3
[0064] A preparation method of a repair dressing containing ginseng extract, comprising the following steps:
[0065] (1) Take starch, add 2 mL of sodium hydroxide, stir and mix for 30 min, alkalize at -18°C for 22 h, stand to thaw, then transfer to 50 mL of ethanol solution, stir and disperse for 1.5 h, add tris and benzyl ammonium chloride ( catalyst), continue stirring for 20min, add 2-chloroethylamine hydrochloride, stir and react for 20h, filter and collect the product, wash, freeze-dry to obtain modified starch; the mass ratio of starch to 2-chloroethylamine hydrochloride is 1: 2.
[0066] (2) Take chitosan and acetic acid solution, mix and stir to obtain a mixed solution, the mass concentration of the mixed solution is 2.5%, spray the mixed solution into the sodium polyphosphate solution, react for 4.5h, take the precipitated beads, and transfer them to hydroxide Swell in sodium solution, add epichlorohydrin solution, continue to react for 26h, wash until neutral, free...
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