Nanoparticle-Based Assays of Antioxidant Activity

The antioxidant power of several phenolic acids and related food samples is estimated from the generation and growth of gold nanoparticles. The intensity of the resulting particle plasmon absorption bands correlates well with the redox characteristics of these phenolic acids estimated from cyclic vo...

Full description

Saved in:
Bibliographic Details
Published in:Analytical chemistry (Washington) 2006-03, Vol.78 (6), p.2060-2063
Main Authors: Scampicchio, Matteo, Wang, Joseph, Blasco, Antonio J, Sanchez Arribas, Alberto, Mannino, Saverio, Escarpa, Alberto
Format: Article
Language:English
Subjects:
Analytical chemistry
Antioxidants
Antioxidants - analysis
Biochemistry
Electrochemistry
Gold
Gold - chemistry
Hydroxybenzoates - chemistry
Nanoparticles
Nanoparticles - chemistry
Sensitivity and Specificity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The antioxidant power of several phenolic acids and related food samples is estimated from the generation and growth of gold nanoparticles. The intensity of the resulting particle plasmon absorption bands correlates well with the redox characteristics of these phenolic acids estimated from cyclic voltammetry experiments. The highest capacity of reducing gold(III) to gold nanoparticles corresponds to the highest antioxidant activity, consistent with the tendency of phenolic acids to donate electrons.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac052007a