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Croatian journal of food science and technology, Vol. 13 No. 2, 2021.

Original scientific paper

https://doi.org/10.17508/CJFST.2021.13.2.14

Polyphenolic content, antioxidant activity and metal composition of traditional blackberry products

Daniela Amidžić Klarić orcid id orcid.org/0000-0002-1695-6950 ; University of Zagreb, Faculty of Pharmacy and Biochemistry, A. Kovačića 1, 10000 Zagreb, Croatia
Ilija Klarić ; Public Health Brčko DC, Department of Health Ecology, R. Dž. Čauševića 1, 76000 Brčko DC, Bosnia and Herzegovina
Ana Mornar orcid id orcid.org/0000-0002-3944-697X ; University of Zagreb, Faculty of Pharmacy and Biochemistry, A. Kovačića 1, 10000 Zagreb, Croatia
Darko Velić orcid id orcid.org/0000-0002-3888-998X ; University of Osijek, Faculty of Food Technology Osijek, F. Kuhača 18, 31000 Osijek, Croatia
Natalija Velić orcid id orcid.org/0000-0002-5620-506X ; University of Osijek, Faculty of Food Technology Osijek, F. Kuhača 18, 31000 Osijek, Croatia

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Abstract

In this study, commercially available traditional blackberry products, namely blackberry wines and blackberry elixirs from Coastal Croatia and Bosnia and Herzegovina, were investigated as sources of bioactive compounds, essential nutrients and metals. Samples were analysed for pH, total polyphenols and monomeric anthocyanins content, individual phenolic acids (gallic acid, chlorogenic acid, caffeic acid and p-coumaric acid), antioxidant activity (DPPH and ABTS), reducing power (RPA), total nitrogen and phosphorus as well as metals (K, Na, Ca, Mg, Fe, Mn, Cu, Zn, Co, Cr, Cd). The results of this study showed that the studied traditional blackberry products are rich sources of polyphenols and their consumption could increase the daily intake of dietary antioxidants in humans. In addition, both groups of traditional blackberry products could be considered safe for health and good additional sources of essential minerals such as manganese and potassium. The concentrations of the analysed undesirable toxic and potentially toxic metals in the studied blackberry products were below the maximum allowable concentrations defined by various regulations for wines and fruit wines.

Keywords

blackberry wine; blackberry elixir; polyphenolic content; antioxidant activity; metal composition

Hrčak ID:

269600

URI

https://hrcak.srce.hr/269600

Publication date:

15.12.2021.

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