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@article{1642207, author = {Denev, Petko and Číž, Milan and Kratchanova, Maria and Blazheva, Denica}, article_location = {Oxford, UK}, article_number = {JUN 30 2019}, doi = {http://dx.doi.org/10.1016/j.foodchem.2019.01.108}, keywords = {Black chokeberry (Aronia melanocarpa) fruits; Polyphenols; Antioxidant activity; Oxidative burst; Neutrophils; Antimicrobial properties}, language = {eng}, issn = {0308-8146}, journal = {Food Chemistry}, title = {Black chokeberry (Aronia melanocarpa) polyphenols reveal different antioxidant, antimicrobial and neutrophil-modulating activities}, url = {https://www.sciencedirect.com/science/article/pii/S0308814619301761}, volume = {284}, year = {2019} }
TY - JOUR ID - 1642207 AU - Denev, Petko - Číž, Milan - Kratchanova, Maria - Blazheva, Denica PY - 2019 TI - Black chokeberry (Aronia melanocarpa) polyphenols reveal different antioxidant, antimicrobial and neutrophil-modulating activities JF - Food Chemistry VL - 284 IS - JUN 30 2019 SP - 108-117 EP - 108-117 PB - Elsevier Science SN - 03088146 KW - Black chokeberry (Aronia melanocarpa) fruits KW - Polyphenols KW - Antioxidant activity KW - Oxidative burst KW - Neutrophils KW - Antimicrobial properties UR - https://www.sciencedirect.com/science/article/pii/S0308814619301761 L2 - https://www.sciencedirect.com/science/article/pii/S0308814619301761 N2 - The current study reports data on antioxidant, antimicrobial and neutrophil-modulating activities of different polyphenolic preparations from black chokeberry fruits: crude extract, purified extract standardized to 20% and 40% anthocyanins, and proanthocyanidins; as well as pure compounds (chlorogenic acid, cyanidin-3-O-galactoside, epicatechin, rutin and quercetin) present in black chokeberries. Minor phenolic components - quercetin and epicatechin showed the highest ORAC and TRAP antioxidant activity. Given the amount of individual phenolics in the fruits, proanthocyanidins are the major contributor to antioxidant activity of fresh black chokeberries. Studied polyphenols and preparations had no effect on the spontaneous chemiluminescence (CL) of human neutrophils and only mild effect on PMA-activated CL. Greater effects were observed on OZP-activated CL, being statistically significant (p < 0.05) for quercetin and rutin. The antimicrobial activity test against 10 pathogens showed that black chokeberry proanthocyanidins are the most potent antimicrobial agents in the fruit. ER -
DENEV, Petko, Milan ČÍŽ, Maria KRATCHANOVA a Denica BLAZHEVA. Black chokeberry (Aronia melanocarpa) polyphenols reveal different antioxidant, antimicrobial and neutrophil-modulating activities. \textit{Food Chemistry}. Oxford, UK: Elsevier Science, 2019, roč.~284, JUN 30 2019, s.~108-117. ISSN~0308-8146. Dostupné z: https://dx.doi.org/10.1016/j.foodchem.2019.01.108.
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