Polyphenolic content and bioactivities of L. (Rosaceae).

Nat Prod Res

Unité de recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques (VARENBIOMOL), Département de Chimie, Faculté des Sciences Exactes, Université Constantine 1, Constantine, Algérie.

Published: February 2021

Solid-Liquid Extraction (SLE) using solvent of different polarities (CHCl, EtOAc, and -BuOH) has been applied to leaves and fruits from ( L.), a deciduous shrub with an expected rich phytochemical profile. The total polyphenols content and the radical scavenging activity of each extract were evaluated. These extracts were analyzed by HPLC-DAD and rutin, quercetin-3-glucoside, caftaric and caffeic acid had been positively identified. The phytochemical study of the ethyl acetate extract of led to the isolation and structural elucidation of quercetin (1); quercetin-3--β-glucoside (2); epicatechin (3); naringenin (4), reported for the first time from this species except caffeic acid and epicatechin. These compounds were identified by 1D and 2D NMR combined analysis as well as by MS and UV.The antimicrobial activity of these extracts has also been tested, showing strong antibacterial activity-solvent dependent-against Gram positive bacteria. Additionally, bactericidal power was demonstrated in fruit extracts.

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http://dx.doi.org/10.1080/14786419.2019.1582044DOI Listing

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