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Details for article 13 of 14 found articles
| Title: | |
| Author: | |
| Appeared in: |
Analytical letters |
| Paging: | Volume 40 (2007) nr. 16 pages 3050-3059 |
| Year: |
2007-01 |
| Contents: |
Electrochemical investigation of the interaction of Ascorbic acid (AA) with bovine serum albumin (BSA) on a glassy carbon electrode is reported for the first time. In a 0.1 mol/l, pH 7.3 NaCl solution, AA had a well-defined voltammetric oxidative peak at +0.2086 V (versus Ag/AgCl) on a GC electrode. After the addition of BSA into the AA solution, the oxidative peak current decreased significantly without a shift of the peak potential, and no new peak appeared. The experimental results showed that a new nonelectrochemical supramolecular complex was formed after the interaction of BSA with AA, which resulted in a decrease of the diffusion coefficient, and then a decrease of the oxidative peak current. The interaction conditions and the electrochemical detection conditions were carefully investigated. The stoichiometry of this supramolecular complex was calculated based on voltammetric data with a binding number of two and a binding constant of 1.38×107. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 13 of 14 found articles
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