Related Experiment Video
Updated: Apr 20, 2026

Solubility of Hydrophobic Compounds in Aqueous Solution Using Combinations of Self-assembling Peptide and Amino Acid
Published on: September 20, 2017
Formulation of spray congealed microparticles with self-emulsifying ability for enhanced glibenclamide dissolution
Beatrice Albertini1, Marcello Di Sabatino, Cecilia Melegari
1Department of Pharmacy and Biotechnology, University of Bologna , Bologna , Italy.
Purpose:
To develop a novel preparation approach of solid Self-Emulsifying Drug Delivery System (s-SEDDS) based on spray congealing as potential drug delivery technology for poorly water-soluble drug Glibenclamide (GBD).
Methods:
Several systems were formulated using suitable excipients, solid at room temperature, with different hydrophilic-lipophilic balance, such as Myverol, Myvatex, Gelucire®50/13 and Gelucire®44/14. Cremophor®EL and Poloxamer 188 were selected as surfactants and PEG 4000 as co-solvent.
Results:
The screening of the best carrier for s-SEDDS manufacturing revealed that Gelucire®50/13 had greater performance. Then, surfactant-co-solvent systems were developed. Dissolution studies showed that all the formulations promoted the solubilisation performance of the GBD with respect to pure drug; in particular the formulation containing Gelucire®50/13 and PEG 4000 increased the drug solubilisation of five times. These microparticles showed self-dispersibility within 60 min and micelles dimensions around 360 nm.
Conclusions:
Spray congealing is a promising novel manufacturing technique of solid self-emulsifying systems.
Related Concept Videos
Factors Affecting Dissolution: Particle Size and Effective Surface Area
Bioavailability Enhancement: Drug Solubility Enhancement
Factors Influencing Drug Absorption: Pharmaceutical Parameters
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Pharmaceutical Alternatives: Polymorphic Form-Related and Particle Size-Related Therapeutic Nonequivalence

