Acetylcysteine gel, and preparation method and application thereof
A technology of cysteine gel and acetylcysteine, which is applied in the direction of pharmaceutical formulations, aerosol delivery, and medical preparations containing active ingredients, can solve the lack of effective drugs and treatments for oral ulcer care and treatment. Methods and other issues, to achieve the effect of enriching varieties, relieving pain, and good product uniformity
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Embodiment 1
[0041] Cool 75g of purified water to 10°C, pass N during the cooling process 2 To dissolved oxygen 2 Dissolved oxygen<2ppm (about 1.7ppm) alkaline solution to adjust the pH value to 6.0, after the acetylcysteine is dissolved, add 0.1g methyl p-hydroxybenzoate and 15g poloxamer (used concentration is 20% (w / v)), increase the stirring speed to form a vortex until the poloxamer is dissolved, let it stand for 24 hours, and filter to obtain the acetylcysteine gel.
Embodiment 2
[0043] Cool 70g of purified water to 1°C, pass N during the cooling process 2 When the dissolved oxygen content is less than 2ppm (about 1.9ppm), add 30g acetylcysteine, 0.1g sodium metabisulfite and 0.1g sucrose and stir to mix. 2 Dissolved oxygen<2ppm (about 1.9ppm) alkaline solution to adjust the pH value to 7.0, after the acetylcysteine is dissolved, add 0.2g sodium benzoate and 20g poloxamer (use concentration is 10% (w / v )), increase the stirring speed to form a vortex until the poloxamer is dissolved, let it stand for 12 hours, and filter to obtain the acetylcysteine gel.
Embodiment 3
[0045] Cool 75g of purified water to 20°C, pass N during the cooling process 2 To dissolved oxygen 2 Dissolved oxygen<2ppm (about 1.8ppm) alkaline solution to adjust the pH value to 5.0, after the acetylcysteine is dissolved, add 1.0g potassium sorbate and 13g poloxamer (use concentration is 25% (w / v)), increase the stirring speed to form a vortex until the poloxamer is dissolved, let it stand for 18 hours, add 0.05g of lemon essence to dissolve and filter, and obtain the acetylcysteine gel.
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