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Antioxidant synergism and antagonism between selected monoterpenes using the 2,2‐diphenyl‐1‐picrylhydrazyl method
Author(s) -
Ciesla Lukasz M.,
WojtunikKulesza Karolina A.,
Oniszczuk Anna,
WaksmundzkaHajnos Monika
Publication year - 2016
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.3330
Subject(s) - citronellal , chemistry , dpph , antioxidant , antagonism , organic chemistry , electrophile , stereochemistry , catalysis , biochemistry , receptor
This research aims to investigate synergistic and antagonistic antioxidant interactions for binary mixtures of common monoterpenes. The activity was determined spectrophotometrically with the use of the DPPH • assay. Significant antioxidant synergism, between two different monoterpenes, was observed for a mixture of inactive p ‐cymene and one of the compounds, characterized by moderate antioxidant activity, e.g. (±)‐citronellal, α ‐phellandrene or α ‐terpinene. It has been proven that the activity of (±)‐citronellal is increased in the presence of hydrocarbons possessing the aromatic nucleophilic ring, which may react with electrophiles. A possible reaction mechanism was proposed for the synergistic antioxidant effect of p ‐cymene and (±)‐citronellal. This research opens new perspectives for studying interactions between isoprene derivatives, found in essential oils. Copyright © 2016 John Wiley & Sons, Ltd.