A Three-Step Approach to Estimation of Reduction Potentials of Natural Mixtures of Antioxidants Based on DPPH Test; Illustration for Catechins and Cocoa

Autor: Barbara Kusznierewicz, Monika Baranowska, Klaudia Suliborska, Wojciech Chrzanowski, Agnieszka Bartoszek
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Proceedings, Vol 11, Iss 1, p 4 (2019)
Druh dokumentu: article
ISSN: 2504-3900
DOI: 10.3390/proceedings2019011004
Popis: The aim of this study is to propose a methodology to assess electrochemical properties of complex mixtures of antioxidants, such as plant extracts, based on the results of simple and popular DPPH test. The first, most difficult step, involves determinations of standard reduction potentials (E0) for the series of purified compounds (here catechins). The next step is the calculation of stoichiometric values (n10) based on the results of DPPH test for the same compounds. Finally, a correlation equation is formulated, which is then employed to estimate “cumulative reduction potential” (Ec) for the mixture of interest (here cocoa) using DPPH test results.
Databáze: Directory of Open Access Journals