Phenolic Composition and Biological Properties of Wild and Commercial Dog Rose Fruits and Leaves

Abstract

Rosa canina L. (dog rose) is a rich source of phenolic compounds that offer great hope for the prevention of chronic human diseases. Herein, wild and commercial samples of dog rose were chemically characterized with respect to their phenolic composition by liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry (LC-DAD-ESI/MS). Furthermore, in vitro antioxidant properties and antibacterial activity of dog rose fruits and leaves hydromethanolic extracts and infusions were also evaluated. The results revealed that wild and commercial fruits of dog rose are similar in terms of l(+)-ascorbic acid, total phenolics (TPC), total flavonoids (TFC) and total phenolic acids (TPAC) content, individual phenolic constituents and antioxidant activity. Moreover, the fruits had lower levels of phenolic compounds and also revealed lower biological activity than the leaves. On the other hands, the highest content of TPC, TFC, TPAC, individual phenolic constituents, DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activity and FRAP (ferric reducing antioxidant power) were found in the leaf’s infusions. They were also the only ones to show antibacterial activity. Overall, these finding confirmed usefulness of R. canina L. leaves and fruits as a rich source of bioactive phenolic compounds with potential use in food, pharmaceutical, and cosmetic industries.

Antimicrobial Activity of Phenolic Extracts of Juniperus phoenicea and Glycyrrhiza glabra from Western Algeria

“…As for the hydromethanolic extract of Juniperus phoenicea, the results obtained indicated a significative inhibitory effect (p ≤ 0.05) against Staphylococcus aureus with a diameter inhibition area of 3 ± 0.74 cm. These results are consistent with the results of [24,25] both have studied phenolic extract effect. Further studies have been carried out about antibacterial activity against Staphylococcus aureus using herbal extracts.…”

Plant Allelochemicals as Sources of Insecticides

“…Anti-herbivory compounds are secondary metabolites of plants suppressing herbivore insects [21]. They can be divided into several subgroups: nitrogen compounds including alkaloids, cyanogenic glycosides and glucosinolates [22], terpenoids and phenolics [23,24]. The diversity of angiosperms during the Cretaceous period is associated with the sudden increase in speciation in insects [25].…”

A Consideração De Aspectos Socioculturais No Tratamento Da Obesidade: Reflexões Introdutórias

“…Os seus pseudofrutos edíveis são tradicionalmente utilizados na culinária, no fabrico de sumos, vinho, compotas, geleias e infusões (Daneshfar et al, 2018) e no tratamento de várias doenças inflamatórias e dor crónica (artrite, reumatismo, gota e dor ciática) (Demir et al, 2014;Roman et al, 2013;Barros et al, 2011). Muitas vezes, são também utilizados como agentes diuréticos, na prevenção da inflamação da mucosa gástrica ou como laxantes (Polumackanycz et al, 2020). Esta espécie vegetal é reconhecida pelos seus elevados teores de ácido ascórbico (vitamina C) e compostos fenólicos, reconhecidos pelo seu potencial antioxidante (Cunja et al, 2015;Demir et al, 2014, Tumbas et al, 2012.…”

“…A espécie R. canina é bastante conhecida pelo seu conteúdo em compostos fenólicos (Koczka et al, 2018). Estudos efetuados com sementes, folhas e frutos desta espécie botânica têm comprovado muitas das suas atividades biológicas (Polumackanycz et al, 2020;Marstrand e Campbell-Tofte, 2016). No caso específico das pétalas, estas foram ainda pouco estudadas, no entanto, foram já descritas propriedades antimicrobianas e anti-inflamatórias, ambas diretamente relacionadas com a presença de compostos bioativos (Polumackanycz et al, 2020;Nybom e Werlemark, 2017;Lattanzio et al, 2011).…”