gallic acid content and an antioxidant mechanism are responsible for the antiproliferative activity of ‘ataulfo’ mango peel on ls180 cells

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ID: 207929
2018
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Abstract
Mango “Ataulfo” peel is a rich source of polyphenols (PP), with antioxidant and anti-cancer properties; however, it is unknown whether such antiproliferative activity is related to PP’s antioxidant activity. The content (HPLC-DAD), antioxidant (DPPH, FRAP, ORAC), and antiproliferative activities (MTT) of free (FP) and chemically-released PP from mango ‘Ataulfo’ peel after alkaline (AKP) and acid (AP) hydrolysis, were evaluated. AKP fraction was higher (µg/g DW) in gallic acid (GA; 23,816 ± 284) than AP (5610 ± 8) of FR (not detected) fractions. AKP fraction and GA showed the highest antioxidant activity (DPPH/FRAP/ORAC) and GA’s antioxidant activity follows a single electron transfer (SET) mechanism. AKP and GA also showed the best antiproliferative activity against human colon adenocarcinoma cells (LS180; IC50 (µg/mL) 138.2 ± 2.5 and 45.7 ± 5.2) and mouse connective cells (L929; 93.5 ± 7.7 and 65.3 ± 1.2); Cheminformatics confirmed the hydrophilic nature (LogP, 0.6) and a good absorption capacity (75%) for GA. Data suggests that GA’s antiproliferative activity appears to be related to its antioxidant mechanism, although other mechanisms after its absorption could also be involved.
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Authors ;Gustavo. R. Velderrain-Rodríguez;Heriberto Torres-Moreno;Mónica A. Villegas-Ochoa;J. Fernando Ayala-Zavala;Ramón E. Robles-Zepeda;Abraham Wall-Medrano;Gustavo A. González-Aguilar
Journal Journal of ethnopharmacology
Year 2018
DOI
10.3390/molecules23030695
URL
http://www.mdpi.com/1420-3049/23/3/695
Keywords
by-products phenolic compounds biological activity colon cancer

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