Influence of the genotype on the polyphenolic composition and antioxidant activity of some berry fruits
Author:
Selamovska Ana1ORCID, Miskoska-Milevska Elizabeta2ORCID, Taseska-Gjorgjijevski Milena1ORCID, Iljovski Igor2ORCID
Affiliation:
1. Institute of Agriculture, “Ss. Cyril and Methodius” University, Skopje, R. North Macedonia, 2. Faculty of Agricultural Sciences and Food - Skopje, “Ss. Cyril and Methodius” University, Skopje, R. North Macedonia
Abstract
The objective of this study was to analyze the content of vitamin C, total
phenols, total anthocyanins, flavan-3-ols and antioxidant activity in fruits
of five berry fruit species: blackcurrant variety ?Rosenthal?, white
mulberry local ecotype, black chokeberry variety ?Viking?, blackberry
variety ?Thornfree? and pomegranate autochthonous variety ?Karamustafa?.
Determination of vitamin C was performed by classical analytical method.
Total phenols, total anthocyanins, flavan-3-ols and antioxidant activity
were analysed by spectrophotometric methods. The obtained results from the
analysis for berry fruits showed high antioxidant activity, over 70% and
high content of polyphenols. According to the genotype, black chokeberry had
the highest content of total phenols (23.9 mg g-1 FW (fresh weight),
anthocyanins (6.1 mg g-1 FW) and flavan-3-ols (2.8 mg g-1 FW). Blackcurrant
had highest content of vitamin C (216.0 mg 100 g-1 FW) and antioxidant
activity (86.2% inhibition). A positive correlation was found among all the
studied fruit species. A strong positive correlation of vitamin C with
antioxidant activity was determined, as well as between total phenols and
total anthocyanins, i.e. flavan-3-ols. A weak negative correlation was only
observed for catechin in relation to vitamin C, inhibitory antioxidant
activity and vitamin C antioxidant activity.
Publisher
National Library of Serbia
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