Article (Scientific journals)
Impregnation of mesoporous silica with poor aqueous soluble molecule using pressurized carbon dioxide: is the solubility in the supercritical and subcritical phase a critical parameter?
Koch, Nathan; Jennotte, Olivier; Grignard, Bruno et al.
2020In European Journal of Pharmaceutical Sciences, 150, p. 105332
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Keywords :
supercritical carbon dioxide; mesoporous silica
Abstract :
[en] Recently, mesoporous silica (MS) has been used as a material able to maintain amorphous state of active compounds and therefore, enhance the oral bioavailability of BCSII drugs. Among impregnation methods of MS, techniques using supercritical carbon dioxide (sc-CO2) are promising tools. Solubility of compounds in sc-CO2 is reported as one of the most critical parameters, which usually limits its use in drug formulation. Indeed, most of compounds have poor solubility in sc-CO2. The aim of this work is to compare different MS and to study alternative processes using pressurized CO2 for insoluble molecule in sc-CO2. By using high pressure reactor, DSC, HPLC and in vitro dissolution tests, the crystallinity and dissolution profiles of MS with different pore size (6.6 nm, 25.0 nm and 2.5 nm) impregnated with fenofibrate (FF) under sc-CO2 were compared to select the most appropriate carrier. Then, the selected MS has been impregnated under supercritical, subcritical and atmospheric conditions. We have shown that the MS pore size of 6.6 nm provides the higher amorphous drug loading capacity as well as the faster and higher drug dissolution. In addition, FF-MS formulations produced with pressurized CO2 as fusion medium, both in subcritical and supercritical conditions; give similar crystallinity and dissolution results compared to those produced with supercritical fluids as solvent. Through this study, we show new possibilities of using CO2 for insoluble compounds in this fluid.
Research center :
Center for Education and Research on Macromolecules (CERM)
Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit
Laboratory of Pharmaceutical Technology and Biopharmacy
Disciplines :
Pharmacy, pharmacology & toxicology
Chemistry
Materials science & engineering
Author, co-author :
Koch, Nathan ;  University of Liège (ULiège), Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Belgium
Jennotte, Olivier ;  University of Liège (ULiège), Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Belgium
Grignard, Bruno ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Lechanteur, Anna  ;  University of Liège (ULiège), Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Belgium
Evrard, Brigitte  ;  University of Liège (ULiège), Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Belgium
Language :
English
Title :
Impregnation of mesoporous silica with poor aqueous soluble molecule using pressurized carbon dioxide: is the solubility in the supercritical and subcritical phase a critical parameter?
Publication date :
01 July 2020
Journal title :
European Journal of Pharmaceutical Sciences
ISSN :
0928-0987
eISSN :
1879-0720
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
150
Pages :
105332
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
SOLPHARE project
Funders :
FEDER - Fonds Européen de Développement Régional [BE]
Available on ORBi :
since 13 May 2020

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