Preparation technology and application of paeoniflorin wheat gliadin nanoparticles
The invention relates to a wheat prolamin and a preparation process technology, which can be applied to medical preparations containing active ingredients, antipyretics, drug combinations, etc., and can solve the problems of weak transmembrane absorption, low bioavailability, weak lipophilicity, and the like, Achieve the effect of improving bioavailability, simple production process, and easy access to materials
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preparation example Construction
[0011] The material for preparing nanoparticles preferably has a ratio of wheat prolamin: paeoniflorin of 85-95: 5-15; the aqueous phase dispersant is selected from 0.1%-1.0% Pluronic F 68 Or PVA-0486 aqueous solution; the paeoniflorin wheat prolamin nanoparticle scaffolding agent uses 1-5% trehalose.
[0012] The particle size range of the drug-loaded wheat prolamin nanoparticles prepared by adopting an optimized process is 150-250nm, the encapsulation efficiency of the paeoniflorin wheat prolamin nanoparticles is not less than 70%, and the drug-loading capacity is 4.0-6.0%.
Embodiment 1
[0014] Weigh gluten powder, add 5 times the volume percentage of petroleum ether to degrease twice, add 8 times the amount of 65% ethanol to the defatted gluten, ultrasonically extract for 2 hours, centrifuge, concentrate the supernatant until it has no alcohol smell, and carry out water dialysis for 24 hours to the concentrated solution. Without sour taste, the dialyzate was pre-frozen at -20°C for 24 hours, and then freeze-dried for 24 hours to obtain wheat prolamin; weigh the prescribed amount of wheat prolamin: paeoniflorin (90:10). Add 2 times the volume percentage of 65% ethanol, and ultrasonically dissolve it completely. Under the condition of mechanical stirring, inject the obtained ethanol mixture solution into 3 times the volume of 0.3% PVA-0486 aqueous solution, stir for 15 minutes, then add 2% trehalose, stir for 20 minutes, pre-freeze at 20°C for 24 hours, and freeze-dry for 24 hours , to get paeoniflorin wheat prolamin nanoparticles. The particle diameter range ...
experiment example 2
[0016] Weigh the gluten powder, add 6 times the volume percentage of petroleum ether to degrease twice, add 7 times the amount of 80% ethanol to the defatted gluten, ultrasonically extract for 3 hours, centrifuge, concentrate the supernatant until it has no alcohol smell, and carry out water dialysis for 24 hours to the concentrated solution. Without sour taste, the dialyzate was pre-frozen at -20°C for 24 hours, and then freeze-dried for 24 hours to obtain wheat prolamin; weigh the prescribed amount of wheat prolamin: paeoniflorin (85:15). Add 2 times the volume percentage of 85% ethanol, and ultrasonically dissolve it completely. Under the condition of mechanical stirring, inject the obtained ethanol mixture solution into 4 times the volume of 0.5% Pluronic F 68 In the aqueous solution, stir for 10 minutes, then add 4% trehalose, stir for 10 minutes, pre-freeze at 20° C. for 24 hours, and then freeze-dry for 24 hours to obtain paeoniflorin wheat prolamin nanoparticles. The ...
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