Naslov
Characterization of chlorogenic acids in different coffee varieties using electrochemical methods

Autori
Tomac, Ivana ; Šeruga, Marijan ; Jakobek, Lidija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts 1st Young scientist day / Jokić, Stela ; Kovač, Tihomir - Osijek : Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2018, 23-23

Skup
1st Young Scientist Day - PhD conference

Mjesto i datum
Osijek, Hrvatska, 14.06.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
chlorogenic acids, coffee, square-wave voltammetry, differential pulse voltammetry, flow through stripping chronopotentiometry

Sažetak
The characterization of chlorogenic acid (CGAs) in different brands of coffee (green and roasted beans C. arabica and C. robusta, ground coffee Franck Guatemala and Flatcher Olympia, and instant coffee Nescafé Classic, Nescafé Espresso, Jacobs Monarch and Jacobs Intense) were investigated. Before the characterization, the electrochemical properties of the caffeoylquinic acids (CQAs), dicaffeoylquinic acids (diCQAs) and feruloylquinic acids (FQAs) were analysed by the square-wave voltammetry (SWV), differential pulse voltammetry (DPV) and flow through stripping chronopotentiometry (FTSCP). The electrochemical measurements of the CGAs have shown that on the surface of the working electrode, the different electrochemical reactions via different mechanisms of oxidation proceeded, in connection with the chemical structure of CGAs. Characterization of CGAs was performed by SWV, DPV, FTSCP and HPLC methods. The identification and quantification of the CGAs in different brands of coffee were performed by the SWV, DPV, FTSCP and HPLC methods. The results have shown that the highest CGAs total content exists in the green coffee beans.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA