Phytochemical Analysis, Antioxidant and Antimicrobial Activities of Helichrysum arenarium (L.) Moench. and Antennaria dioica (L.) Gaertn. Flowers

Abstract

Antennaria dioica (L.) Gaertn. and Helichrysum arenarium (L.) Moench. are two species of the Asteraceae family, known in Romanian traditional medicine for their diuretic, choleretic, and anti-inflammatory properties. The aim of the present study was to evaluate the phenolic and sterolic composition of flowers from the two species and to assess their antioxidant, antibacterial and antifungal properties. LC-MS analyses were performed on methanolic, ethanolic and 70% v/v ethanolic extracts, before and after acid hydrolysis, and revealed high amounts of polyphenols. Chlorogenic acid was found as the main compound for the flowers of A. dioica (502.70 ± 25.11 mg/100 g d.w.), while quercitrin was dominant in H. arenarium (424.28 ± 21.21 mg/100 g d.w.) in 70% v/v ethanolic extracts before hydrolysis. Antioxidant capacity assays showed an important antioxidant potential, which can be correlated with the determined polyphenolic compounds, showing the 70% v/v ethanolic extracts of the two species as being the most effective antioxidant samples for the DPPH assay. Antibacterial and antifungal assays confirm a modest biological potential for the same extract of both species. Results obtained in the present study bring important data and offer scientific evidence on the chemical composition and on the biological activities of the flowers belonging to the two species.

Investigation of Antimicrobial Activity and DNA Protective Capacity of Melissa officinalis Extracts

“…They suggested that the extract of Ginkgo biloba protect DNA from oxidation. In many studies, antioxidant and antigenotoxic properties have been reported for plant extracts and phytochemicals (Anter et al 2010, Babota et al 2018, Behrevan et al 2011, Karuna et al 2009, Kaur et al 2010, Phalanisong et al 2018, Quincozes-Santos et al 2010, Sinha et al 2010, Vasconcellos et al 2010, Zandi and Ahmadi 2000. Ribeiro et al (2001) investigated that extract of M. officinalis has got high value phenol compounds.…”

Composition, Antioxidant Potential, and Antimicrobial Activity of Helichrysum plicatum DC. Various Extracts

“…O-alkylation increases the lipophilicity and bioavailability of these natural products. To the best of the authors' knowledge, there are no previous records of these derivatives in H. plicatum, probably because this species was mostly studied for the phenolic content of more polar extracts [4,86,112,113]. Methoxylated flavones were, however, reported in other Helichrysum species, such as H. viscosum var.…”

An assessment of phenolic profiles, fatty acid compositions, and biological activities of twoHelichrysumspecies:H. plicatumandH. chionophilum

“…The bioactive compounds obtained from plants have been used as the main resource of natural products recently (Babotă et al, ; Bahadori, Kirkan, & Sarikurkcu, ; Korga et al, ). The herbal products become very popular especially because the uses of synthetic drugs have several concerns (Zengin et al, ).…”