Journal
NATURAL PRODUCT RESEARCH
Volume 35, Issue 10, Pages 1696-1701Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786419.2019.1627350
Keywords
Pomegranate peel extracts; agro-industrial by-products; polyphenols; peripheral blood mononuclear cells; anti-proliferative effect; circular economy
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The study demonstrated that pomegranate peel extracts have a protective effect on bovine peripheral blood mononuclear cells and are not cytotoxic at certain concentrations. Additionally, the extracts show significant anti-proliferative activity.
Pomegranate peel extracts prepared in our laboratories from a waste of juice fruit processing were tested on bovine peripheral blood mononuclear cells to evaluate the effects on viability, oxidative stress and proliferation. The (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide) assay pointed out that the extracts were not cytotoxic at the tested concentrations (0.1, 1.0, and 10 mu g/mL). A moderate protective effect against Reactive Oxygen Species production induced by hydrogen peroxide or lipopolysaccharide and a significant anti-proliferative activity against proliferation induced by concanavalin A were observed on cell lines treated with the extracts at 10 mu g/mL. Based on these results, pomegranate peel extracts seem promising as feed supplement for dairy cattle, in particular around calving, when the animals are subjected to an increase of the metabolic activity, responsible for oxidative stress and diseases. However, in vivo studies are needed to investigate the stability of the extracts across the bovine gastrointestinal tract barrier.
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