title: High performance liquid chromatography with evaporative light scattering detection for the characterisation of a vesicular delivery system during stability studies.
abstract: A normal phase high performance liquid chromatography method with evaporative light scattering detection was developed for the simultaneous quantification of the lipid constituents of a non-ionic surfactant vesicle (NIV) delivery system consisting of tetra-ethylene glycol mono n-hexadecyl ether, cholesterol and dicetyl phosphate. An accelerated stability study performed at 25°C/60% relative humidity (RH) and 40°C/75% RH indicated that the NIV were chemically stable. Similar results were observed when stored at 4°C for 469 days. This chromatographic method developed is a sensitive, robust and high throughput analytical technique that offers the potential for rapid quantification of lipids in liposomal and vesicular systems. The results of the chromatographic studies were supported by parallel size and zeta potential measurements.
authors.affiliation: Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
authors.forename: Manal M
authors.initials: MM
authors.lastname: Alsaadi
authors.forename: K
authors.initials: K
authors.lastname: Christine Carter
authors.forename: Alexander B
authors.initials: AB
authors.lastname: Mullen
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D016503:Drug Delivery Systems; D008027:Light; D012542:Scattering, Radiation
keywords: Evaporative light scattering detection; Lipid analysis; Non-ionic surfactant; Normal phase HPLC; Vesicles