title: Influence of rapeseed phospholipids on ibuprofen dissolution from solid dispersions.
abstract: The dissolution profiles of ibuprofen (IB) from solid dispersions prepared by the solvent evaporation method, containing the rapeseed lecithin ethanol soluble fraction (LESF) or rapeseed phosphatidylcholine (RPC) have been determined. The effect of incorporation of PEG 4,000 or PEG 8,000 in the solid dispersions on the controlled-release of IB was also investigated. Dissolution studies conducted in double-distilled water using the paddle dissolution apparatus showed that the initial dissolution rate (IDR) within the first 5 min and the maximum percent of dissolved IB of IB/LESF were double of those of IB/RPC (both in ratio 4:1 w/w). The low amounts of LESF markedly increased dissolution of IB. Increasing of LESF concentration from 0 to 10 and 20% in solid dispersions produced 60 and 100% improvement of IB maximum dissolution level respectively, to compare with that of IB alone. PEG 4,000 caused the slightly decreasing in IB dissolution rate, while PEG 8,000 markedly improved the dissolution of IB in examined conditions.
authors.affiliation: Department of Drug Technology, Faculty of Pharmacy, Medical University of Silesia, Sosnowiec, Poland. msosada@slam.katowice.p
authors.forename: M
authors.initials: M
authors.lastname: Sosada
authors.forename: M
authors.initials: M
authors.lastname: Gorecki
authors.forename: B
authors.initials: B
authors.lastname: Pasker
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000737:chemistry*; D029741:Brassica rapa / Q000737:chemistry*; D003692:Delayed-Action Preparations; D005079:Excipients; D007052:Ibuprofen / Q000008:administration & dosage / Q000737:chemistry*; D010743:Phospholipids / Q000737:chemistry*; D011092:Polyethylene Glycols; D012995:Solubility; D012997:Solvents
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D003692:Delayed-Action Preparations; D005079:Excipients; D010743:Phospholipids; D012997:Solvents; D011092:Polyethylene Glycols; D007052:Ibuprofen