Affiliation:
1. Department of Food Biotechnology, Faculty of Health Science, Medical University of Białystok, Szpitalna 37 Street, 15-295 Białystok, Poland
2. Department of Bromatology, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Białystok, Mickiewicza 2D Street, 15-222 Białystok, Poland
Abstract
Chokeberry fruits are a rich source of bioactive ingredients and their beneficial effect on the body has been proven in the literature. They contain antioxidants such as polyphenols (anthocyanins, procyanidins, phenolic acids, flavonols and flavanols) but also other essential substances with health-promoting potential, such as vitamin C and elements. Providing the right amount of these ingredients is very important for maintaining health and preventing the effects of oxidative stress. The aim of the study was to assess the content of antioxidant elements (magnesium—Mg) and trace elements (copper—Cu, iron—Fe, manganese—Mn, selenium—Se and zinc—Zn), with the antioxidant potential being measured using the FRAP method, along with total anthocyanin, total flavonoid and total polyphenol content (TPC) in 25 chokeberry juices and 6 chokeberry fibers sourced from conventional and organic farming. All chokeberry juices and chokeberry fibers available on the Polish market at that time were ordered for testing. The studied juices came from concentrate (FC) and not from concentrate (NFC). Taking into account the mineral content, it was shown that both chokeberry juices and fibers contained the highest amount of Mg and the lowest amount of Se. The FRAP value was significantly higher (p < 0.05) in organic juices compared to conventional ones as well as being higher (p < 0.05) in NFC juices compared to FC juices. NFC juices were also characterized by their higher concentrations of TPC, total flavonoid and total anthocyanin levels (p < 0.05) compared to FC juices. Consumption of 100 g of chokeberry juice can cover from 149.5 to 3177.0% of the daily requirement for Cu, 6.8–32.4% for Mn, 2.8–6.1% for Mg, 0.9–7.4% for Se, 0.2–3.7% for Fe, 0.3–1.2% for Zn and 8.3–34.5% for vitamin C. In turn, the consumption of 10 g of fiber can cover 4.3–32.0% of the daily requirement for Fe, 0.6–9.0% for Se, 3.7–8.2% for Cu, 2.2–3.8% for Mg, 0.6–9.0% for Se, 0.9–8.5% for Zn and 0.5–0.7%% for vitamin C. Chokeberry products can be a valuable component of a healthy diet.
Funder
MEDICAL UNIVERSITY OF BIAŁYSTOK
Subject
Plant Science,Health Professions (miscellaneous),Health (social science),Microbiology,Food Science