Food & Feed Research

THE INFLUENCE OF POLYPHENOLS ON THE FORMATION OF FREE RADICALS DETECTED IN MAILLARD REACTION MODEL SYSTEMS

DOI: UDK:
637.54’65:664.8.037.5:536.621/.626
JOURNAL No:
Volume 45, Issue 2
PAGES
187-192
KEYWORDS
pyrazine cation radicals, polyphenols, ESR
TOOLS Creative Commons License
Marijana B. Sakač1*, Sonja M. Đilas2, Pavle T. Jovanov1
1University of Novi Sad, Institute of Food Technology, 21000 Novi Sad, Bulevar cara Lazara 1, Serbia
2University of Novi Sad, Faculty of Technology, 21000 Novi Sad, Bulevar cara Lazara 1, Serbia

ABSTRACT

The formation of pyrazine cation radicals was detected in model systems consisted of D-(+)-glucose (1.0 mol L-1) and structural isomers of aminobutanoic acid (1.0 mol L-1) heated at the temperature of 98 °C for 20 minutes using electron spin resonance (ESR) spectrometry. Based on the analyses of hyperfine structure of ESR spectra of reaction mixtures of model systems, the presence of 1,4-disubstituted pyrazine cation radicals was found. Different polyphenols (gallic, caffeic, ferulic, chlorogenic acid, and tannic acid) were added in the model systems to investigate their influence on the formation of pyrazine cation radicals. It was found that tannic acid was the most efficient in inhibiting the formation of free radicals followed by gallic > caffeic ³ chlorogenic > ferulic acid.



Download full article PDF
DOWNLOAD PDF










INSTITUTE
OF FOOD
TECHNOLOGY
IN NOVI SAD
www.fins.uns.ac.rs