نتایج جستجو برای: antisolvent precipitation ultrasonication method

تعداد نتایج: 1680517  

Journal: :Powder Technology 2022

An effective way to ensure proper mixing and thereby realize maintenance-free operation of the clogging-sensitive continuous tubular crystallizers is utilization ultrasound-irradiation. Considering this, our research aimed develop an ultrasonicated plug flow crystallization process separate purify a multicomponent acetylsalicylic acid (ASA) reaction mixture with antisolvent combined cooling-ant...

2014
Fengli Chen Tong Li Shuangyang Li Kexin Hou Zaizhi Liu Lili Li Guoqiang Cui Yuangang Zu Lei Yang

The aim of this study was to prepare nanosized Tripterygium wilfordii multi-glycoside (GTW) powders by the supercritical antisolvent precipitation process (SAS), and to evaluate the anti-inflammatory effects. Ethanol was used as solvent and carbon dioxide was used as an antisolvent. The effects of process parameters such as precipitation pressure (15-35 MPa), precipitation temperature (45-65 °C...

2014
J. Y. Tan L. C. Lum M. G. Lee S. Mansouri K. Hapgood X. D. Chen

Folic acid (FA) is known to be an important supplement to prevent neural tube defect (NTD) in pregnant women. Similar to some commercial formulations, sodium bicarbonate solution is used as a solvent for FA. This work uses the antisolvent vapour precipitation (AVP), incorporating ethanol vapour as the convective drying medium in place of air to produce branch-like micro-structure FA particles. ...

Journal: :European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences 2014
Yuangang Zu Wei Sun Xiuhua Zhao Weiguo Wang Yong Li Yunlong Ge Ying Liu Kunlun Wang

We prepared amphotericin B (AmB) nanoparticles through liquid antisolvent precipitation (LAP) and by freeze-drying to improve the solubility of AmB for oral administration. The LAP was optimized through a single-factor experiment. We determined the effects of surfactants and their concentration, the stirring time, the precipitation temperature, the stirring intensity, the drug concentration and...

Journal: :Acta pharmaceutica 2011
Tarique Ali Meer Kiran P Sawant Purnima D Amin

Liquid antisolvent process was explored as a solubility modulating tool. Bicalutamide, a poorly water soluble drug, was used as a candidate. Low aqueous solubility and poor dissolution of bicalutamide results into poor and variable bioavailability. Therefore, the objective of the present work was to modify the solubility of bicalutamide using the liquid antisolvent precipitation process. HPMC E...

Journal: :International journal of pharmaceutics 2007
Mariana Sousa Costa Ana Rita C Duarte M Margarida Cardoso Catarina M M Duarte

The micronization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) from organic solutions using supercritical antisolvent (SAS) technique has been successfully achieved. SAS experiments were carried out at different operational conditions and microspheres with mean diameters ranging from 3 to 9 microm were obtained. The effect of CO(2) and liquid flow, temperature and pressure on particle...

Journal: :International Journal of Pharmaceutics 2007

Journal: :International journal of pharmaceutics 2014
Yuangang Zu Na Li Xiuhua Zhao Yong Li Yulong Ge Weiguo Wang Kunlun Wang Ying Liu

In order to enhance solubility and dissolution rate in water, micronized l-nimodipine (NMD) has been successfully prepared by antisolvent re-crystallization process using acetone as solvent and deionized water as antisolvent. The effects of five experimental parameters on the mean particle size (MPS) of NMD nanosuspension were investigated. It was found that the MPS of NMD nanosuspension decrea...

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