@conference{
author = "Petrov Ivanković, Anja and Ćorović, Marija and Milivojević, Ana and Veljković, Milica and Vukoičić, Ana and Simović, Milica and Bezbradica, Dejan",
year = "2023",
abstract = "Berries are known to be one of the richest sources of polyphenols which can offer
various health benefits. Dietary supplementation with berries has a positive influence on the
gut microbiota, which directly affects overall health, including skin health. However, topical
application of berry polyphenols has been used mainly for its antioxidant activity to prevent
premature aging and improve the skin's appearance. Therefore, this study examined the
content of different polyphenol classes of cranberry (Vaccinium macrocarpa), chokeberry
(Aronia melanocarpa) and blueberry (Vaccinium angustifolium) extracts, investigating their
antioxidant properties and potential impact on skin as topical prebiotics. The prebiotic
capacity of these extracts in applied concentrations range of 0.015-0.05 mg GAE/mL, was
determined against two cutaneous bacteria - beneficial Staphylococcus epidermidis and
opportunistic pathogen Staphylococcus aureus, since the disrupted balance between them
may contribute worsening of atopic dermatitis. The obtained results showed that the total
polyphenol content was highest in chokeberry extract (9.88 mg GAE/g DM), followed by
cranberry extract (8.78 mg GAE/g DM), and the lowest in blueberry extract (6.48 mg GAE/g
DM). Chokeberry extract was also richest in flavonoids, flavonols, anthocyanins and phenolic
acids. Notably, cranberry extract had the highest concentration of tannins, almost three times
higher compared to blueberry extract. According to DPPH and ABTS methods, the
antioxidant activity was significantly high in chokeberry extract, while FRAP method
revealed that cranberry extract is the most potent antioxidant. Regarding prebiotic capacity,
positive values (0.10-0.48) were observed at all concentrations of cranberry extract, with a
trend indicating a decrease in prebiotic capacity as polyphenol concentration increases.
Prebiotic capacities of blueberry and chokeberry extracts had either negative values or values
equal to zero, indicating that these extracts do not positively impact the microorganisms’
ratio. Obtained findings suggest cranberry extract potential for enhancing both antioxidant
defense of skin and rebalancing cutaneous microbiota.",
publisher = "Belgrade : University, Faculty of Technology and Metallurgy",
journal = "Book of Abstracts / International Conference Biochemical Engineering and Biotechnology for Young Scientists, 7-8 December, 2023, Belgrade",
title = "DISCOVERING POTENTIAL OF POLYPHENOL COMPOUNDS FROM BLUEBERRY, CRANBERRY AND CHOKEBERRY EXTRACTS AS SKIN PREBIOTICS",
pages = "29",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6946"
}