title: Antioxidant activity evaluation involving hemoglobin-related free radical reactivity.
abstract: Two methods for the measurement of antioxidant capacity are described: one based on a chronometric variation of a hemoglobin ascorbate peroxidase assay and the other based on electron paramagnetic resonance (EPR) spectra collected upon alkaline treatment of ethanolic samples. The involved chemical mechanisms are discussed, alongside the most important benefits and shortcomings; the assays offer new qualitative and quantitative information on samples of biological as well as synthetic origin.
authors.affiliation: Department of Chemistry and Chemical Engineering, Babes-Boyai University, 1 Mihail Kogălniceanu Street, Cluj-Napoca, 400084, Romania.
authors.forename: Augustin C
authors.initials: AC
authors.lastname: Mot
authors.forename: Cristina
authors.initials: C
authors.lastname: Bischin
authors.forename: Grigore
authors.initials: G
authors.lastname: Damian
authors.forename: Radu
authors.initials: R
authors.lastname: Silaghi-Dumitrescu
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D060387:Ascorbate Peroxidases / Q000378:metabolism; D001205:Ascorbic Acid / Q000378:metabolism; D002417:Cattle; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D005609:Free Radicals / Q000378:metabolism*; D006454:Hemoglobins / Q000378:metabolism*; D010084:Oxidation-Reduction; D013997:Time Factors
chemical_list: D000975:Antioxidants; D005609:Free Radicals; D006454:Hemoglobins; D060387:Ascorbate Peroxidases; D001205:Ascorbic Acid