engleski

The influence of interactions among phenolic compounds from chokeberry on the antiradical activity of chokeberry

In this work, interactions between chokeberry (Aronia melanocarpa) phenols and their influence on the antiradical activity were studied. Three fractions were extracted from chokeberries. Every fraction was enriched with different classes of phenolic compounds, first with flavonols and hydroxycinnamic acids, the second with anthocyanins and the third with insoluble phenols and proanthocyanidins. Antiradical activities of phenolic fractions and their mixtures were determined by using the DPPH test. Results showed that the reaction between phenols and DPPH• radicals was a biphasic reaction with “fast” and “slow” scavenging rates. Phenolic mixtures showed lower antiradical activity in comparison to the antiradical activity of individual fractions which can be the result of various interactions between phenolic compounds. This suggests that interactions among phenols promoted a negative synergistic effect on the antiradical activity of chokeberries.

phenolic compounds; antiradical activity; chokeberry; interactions; synergism

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