Sustained-release film for preventing prefrontal alopecia and preparation method thereof
A slow-release film and pre-release technology, which is applied in the field of slow-release film and its preparation, can solve the problems of rapid volatilization, loss, and long-term interaction with the skin, so as to promote drug absorption, improve therapeutic effect, and avoid odor emission. Effect
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[0030] The preparation method of sustained-release film 2 is as follows:
[0031] S1. Disperse 1 g of chitosan in 30 ml of water, add 10 ml of acetic acid with a concentration of 1 mol / L and mix evenly, then add sodium bicarbonate solution to adjust the pH to 5-5.6 (optimally 5.52) to obtain a dispersion.
[0032] S2. In parts by mass, mix 1 part of Poria cocos polysaccharide, 2 to 4 parts of Sapindus chinensis extract, 1 to 8 parts of Lentinus edodes mycelia extract, 0.2 to 2 parts of evening primrose oil, 2 to 5 parts of motherwort extract, 0.1 ~3 parts of vitamin E and 0.1~1 part of tea tree essential oil are evenly mixed to obtain a mixture.
[0033] S3. Add cyclodextrin into water and sonicate until dissolved. According to the mass ratio of the mixture and cyclodextrin at 1:15-40, add the mixture into the solution and sonicate for 1-4 hours, and store it at a temperature of 0-2°C for 5 ~6h, filter, dry, and pulverize to obtain the drug-cyclodextrin.
[0034]S4. Add gluc...
Embodiment 1
[0049] S1. Preparation of sustained-release film 2: Disperse 1 g of chitosan in 30 ml of water, add 10 ml of acetic acid with a concentration of 1 mol / L and mix well, then add sodium bicarbonate solution to adjust the pH to 5 to obtain a dispersion.
[0050] In parts by mass, mix 1 part of pachyrhiza, 2 parts of sapindus chinensis extract, 1 part of shiitake mushroom mycelium extract, 0.2 part of evening primrose oil, 2 parts of motherwort extract, 0.1 part of vitamin E and 0.1 part of tea tree essential oil , to obtain a mixture.
[0051] Add cyclodextrin into water and sonicate until dissolved. According to the mass ratio of mixture and cyclodextrin at 1:15, add the mixture to the solution and sonicate for 1 hour, store it at 2°C for 6 hours, filter, dry, and pulverize to obtain the drug - Cyclodextrins.
[0052] Add glucoamylase and drug-cyclodextrin to the dispersion to obtain a film-forming solution, pour the film-forming solution into a plate, dry at a temperature of 30...
Embodiment 2
[0056] S1. Preparation of sustained-release film 2: Disperse 1 g of chitosan in 30 ml of water, add 10 ml of acetic acid with a concentration of 1 mol / L and mix well, then add sodium bicarbonate solution to adjust the pH to 5.6 to obtain a dispersion.
[0057] In parts by mass, mix 1 part of Poria cocos polysaccharide, 4 parts of Sapindus chinensis extract, 8 parts of shiitake mushroom mycelia extract, 2 parts of evening primrose oil, 5 parts of motherwort extract, 3 parts of vitamin E and 1 part of tea tree essential oil , to obtain a mixture.
[0058] Add cyclodextrin into water and sonicate until dissolved. According to the mass ratio of the mixture and cyclodextrin at 1:40, add the mixture to the solution and sonicate for 4 hours, store it at 0°C for 6 hours, filter, dry, and pulverize to obtain the drug - Cyclodextrins.
[0059] Add glucoamylase and drug-cyclodextrin to the dispersion to obtain a film-forming solution, pour the film-forming solution into a plate, dry at ...
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