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Updated: May 8, 2026

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of Gold(III)

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of Gold(III)

Published on: August 31, 2018

Ascorbic acid and BSA protein in solution and films: interaction and surface morphological structure.

Rafael R G Maciel¹, Adriele A de Almeida, Odin G C Godinho

¹Grupo de Materiais Nanoestruturados, Campus Universitário do Araguaia, Universidade Federal de Mato Grosso, 78600-000 Barra do Garças, MT, Brazil.

Biomed Research International

|August 29, 2013

Summary

This summary is machine-generated.

Ascorbic acid (AA) and bovine serum albumin (BSA) form aggregates in solution and films, showing low binding affinity. Film analysis offers valuable insights into drug-protein interactions in a solid state.

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Area of Science:

Biochemistry
Materials Science

Background:

Protein-drug interactions are crucial in pharmacology.
Studying these interactions in solid-state systems like films provides unique advantages over solution-based methods.

Purpose of the Study:

To investigate the interactions between ascorbic acid (AA) and bovine serum albumin (BSA).
To explore these interactions in both aqueous solutions and solid-state films (BSA/AA films).
To evaluate the utility of film-based systems for studying drug-protein interactions.

Main Methods:

Preparation of BSA/AA films using the layer-by-layer technique.
Spectroscopic analysis (UV-Vis) of solutions and films.
Morphological characterization of films.

Main Results:

In solution, AA and BSA formed aggregates with a low binding constant (K ≈ 10(2) M⁻¹).
In BSA/AA films, AA adsorption and surface morphology were concentration-dependent.
Film analysis revealed hypochromism related to aggregate formation and reduced solvent accessibility to tryptophan.
Observed aggregate structures were consistent with diffusion-limited aggregation.

Conclusions:

Ascorbic acid exhibits low affinity for bovine serum albumin.
BSA/AA films provide a valuable platform for investigating drug-protein interactions using solid-state techniques.
The study highlights the potential of film-based systems for advanced biophysical analysis.