@conference{
author = "Jovanović, Aleksandra A. and Balanč, Bojana and Šavikin, Katarina and Živković, Jelena and Đorđević, Verica and Bugarski, Branko",
year = "2021",
abstract = "Rosa canina L. (Rosaceae) is frequently employed in traditional medicine, due to its diuretic,
anti-inflammatory, anti-allergic, antioxidant and analgesic effects. It is rich in various bioactive
compounds, including polyphenols, carotenoids, ascorbic acid, mineral elements and fatty acids.
Microencapsulation tehnique is a promising tool for improving R. canina polyphenols'
functionality, stability and bioavailability. Еlectrostatic extrusion process was carried out to
obtain calcium-alginate beads with encapsulated R. canina extract. In pure extract, total
polyphenol content was 103.8±1.9 mg GAE/g, whereas the concentration of flavonoids was
64.2±2.40 mg CE/g. Furthermore, polyphenol and flavonoid contents in extract loaded hydrogel
beads were 4.68±0.12 mg GAE/g and 2.93±0.23 mg CE/g, respectively. Thus, determined
encapsulation efficiency was 45.04±1.15%. In ABTS test, antioxidant activity of pure extract and
extract loaded hydrogel beads was 15.30±2.10 and 2.93±0.23 mg Trolox/g, respectively. In
DPPH test, IC50 of pure extract and extract loaded hydrogel beads was 1.07±0.01 and
29.32±2.15 mg/mL, respectively. The size of the produced R. canina extract encapsulated
hydrogel particles was 550.30±34.56 µm. In distilled water as a medium, most of polyphenols
were released relatively rapidly from alginate beads (in the first 20 min), and the maximum
release plateau was reached at 60 min. This study demonstrates the potential of using alginate
for encapsulation of R. canina polyphenols, with the aim to improve their functionality,
bioavailability and stability in food, cosmetic and pharmaceutical products.",
publisher = "Faculty of Technology, Zvornik",
journal = "VII International Congress “Engineering, Environment and Materials in Process Industry“",
title = "Alginate-based encapsulation of polyphenols from Rosa canina L. extract",
pages = "136-131",
doi = "10.7251/EEMEN2101131J"
}
