Quercetin nanoparticle and preparation method thereof
A nanoparticle, quercetin technology, applied in pharmaceutical formulations, medical preparations with inactive ingredients, medical preparations containing active ingredients, etc., can solve the problems of large particle size and limited solubility improvement, and achieve sustained release time. Long, simple ingredients, easy to expand the effect of production
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Embodiment 1
[0026] Accurately weigh 20 mg of quercetin and 4 mg of TPGS, dissolve them in 0.5 mL of DMF, slowly add them dropwise to 10 mL of water under ultrasonic conditions at 10 °C, 13000 r min -1 Centrifuge for 20 min, discard the supernatant, add 5 mL of water to the precipitate, ultrasonically redissolve, and homogenize at 10°C and 2000 bar for 5 times. The result is as figure 1 (Left), the average particle size after preparation is 173.21nm, the PDI is 0.18, the potential is -19.02mV, the average particle size is 175.91nm after 10 days at 4°C, and the storage stability is good.
Embodiment 2
[0028] Accurately weigh 20mg of quercetin and 20mg of TPGS, dissolve in 0.5mL of DMF, slowly add dropwise to 10mL of water at 10°C and ultrasonic conditions, 13000r·min -1 Centrifuge for 20 min, discard the supernatant, add 5 mL of water to the precipitate, ultrasonically redissolve, and homogenize at 10°C and 2000 bar for 5 times. The result is as figure 1 (Right), the average particle size after preparation is 159.13nm, the PDI is 0.16, and the potential is -13.73mV.
Embodiment 3
[0030] Accurately weigh 20 mg of quercetin and 20 mg of TPGS, dissolve in 0.5 mL of DMF, slowly add dropwise to 10 mL of water under stirring at 10 °C, 13000 r min -1 Centrifuge for 20 min, discard the supernatant, add 5 mL of water to the precipitate, ultrasonically redissolve, and homogenize at 10°C and 2000 bar for 5 times. After preparation, the average particle diameter is 231.18nm, the PDI is 0.21, and the potential is -10.03mV.
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