Prof. Dr. Gabriele Sadowski
Small molecule pharmaceutics and complex liquid systems
Projects
The bioavailability of an active pharmaceutical ingredient (API) is often limited by its poor water solubility, which is strongly influenced by pH and the presence of salts. This project develops an adequate model to predict the phase behavior of APIs in water and in (lipid-based) drug delivery systems.
Surfactants are used extensively in industrial and pharmaceutical applications, exploiting their effect on the aqueous solubility of hydrophobic compounds. This project aims at developing an aggregation model to be combined PC-SAFT allowing for predicting the formation of surfactant aggregates and their influence on the solubility of pharmaceutical ingredients.
Oil in water emulsions can effectively be used as delivery systems for poorly water soluble drugs. These emulsions are stabilized by surfactants. This project develops a suitable modeling approach for those systems utilizing an aggregation model and PC-SAFT. This will serve as a predictive method capable of describing the complex liquid-liquid phase equilibria in aqueous oil/surfactant solutions.
Many active pharmaceutical ingredients (APIs) suffer from low aqueous solubility, limiting their bioavailability. Bioavailability can be improved by dissolving the API in a polymer, yielding so-called amorphous solid dispersions (ASDs). This project aims at investigating the influence of coating materials, temperature and relative humidity (RH) on the stability of coated ASDs during storage.
The bioavailability of active pharmaceutical ingredients (API) is often limited by their low aqueous solubility. The API bioavailability can be improved by dissolving the API in a polymer matrix leading to so-called amorphous solid dispersions (ASDs). This project investigates ASDs using polymer salts as matrix formers. It is performed in close cooperation with the group of Lynne Taylor from Purdue University.