Evaporative Light Scattering Detection Based HPLC Method for the Determination of Polysorbate 80 in Therapeutic Protein Formulations
News Mar 13, 2013
An evaporative light scattering detection (ELSD) based high-performance liquid chromatography (HPLC) method is developed for the determination of polysorbate 80 (tween 80) in therapeutic protein formulations. The method is simple and overcomes the difficulties associated with specificity and sensitivity. The method is suitable for the quantitation of polysorbate 80 in the usual formulation range (0.01-0.1%) as well as in trace amounts ≥13 µg/mL. The analysis is based on the removal of protein first by solid-phase extraction using Oasis HLB cartridges followed by HPLC analysis using Inertsil ODS-3 C 18 column (4.6×150 mm, 5 µm) using reversed-phase conditions. The detector response changes exponentially with an increase in polysorbate concentration. A very good linear fit of log ELSD response against log polysorbate 80 concentration is observed. The specificity, sensitivity, precision, and accuracy of the method are suitable for the quantitation of polysorbate 80 in protein formulations.
The article is published online in the Journal of Chromatographic Science and is free to access.
Shedding Light on How Tumors Become Resistant to ImmunotherapyNews
Researchers have now found that in skin cutaneous melanoma an epigenetic control protein is key to the development of immunotherapy resistance.READ MORE
Ingestible Drug-Delivery Materials May Improve Patient Treatment ComplianceNews
Hydrogel-based capsules could expand and reside in the GI tract for days, slowly releasing medication.READ MORE
Nanoparticle Delivery of Curcumin Induces Tumor Cell DeathNews
Attaching curcumin, a component of the common spice turmeric, to nanoparticles can be used to target and destroy treatment-resistant neuroblastoma tumor cellsREAD MORE