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Updated: May 9, 2026

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method
Published on: April 11, 2020
Electrophoretic implementation of the solution-depletion method for measuring protein adsorption, adsorption
Hyeran Noh1, Naris Barnthip, Purnendu Parhi
1Department of Optometry and Vision Science, Seoul National University and Technology, Seoul, South Korea.
Abstract:
The venerable solution-depletion method is perhaps the most unambiguous method of measuring solute adsorption from solution to solid particles, requiring neither complex instrumentation nor associated interpretive theory. We describe herein an SDS-gel electrophoresis implementation of the solution--depletion method for measuring protein adsorption and protein-adsorption kinetics. Silanized-glass particles with different surface chemistry/energy and hydrophobic sepharose-based chromatographic media are used as example adsorbents. Electrophoretic separation enables quantification of adsorption competition among multiple proteins in solution for the same adsorbent surface, demonstrated herein by adsorption--competition kinetics from binary solution.
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