Tryptophan, tryptophan-leucine, and BSA adsorption at an oil-water interface

D. Beaglehole, F. Lawson, G. Harper, M. Hossain

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Adsorption of the amino acid tryptophan, the peptide tryptophan-leucine and the protein bovine serum albumin (BSA) at buffered water-oleyl alcohol interfaces has been studied by ellipsometry. Tryptophan-leucine solutions showed a systematic change in ellipticity with concentration indicating an adsorption of 0.5 mg/m2 for a solution concentration of 1 g/L and evidence of saturation at that concentration. BSA showed an adsorption of 0.45 mg/m2 for a concentration of 3.5 g/L with no sign of saturation, There appeared to be little adsorption of tryptophan at the interface.

Original languageEnglish
Pages (from-to)266-268
Number of pages3
JournalJournal of Colloid and Interface Science
Issue number1
Publication statusPublished - Aug 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry


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