Kurumun Atıf Alan Makalesi
Atıf Alan Yayın
Phenolic constituent, antioxidative and tyrosinase inhibitory activity of Ornithogalum narbonense L. from Turkey: A phytochemical study
Scopus
Toplam 116 atıf DOI
This study examined the antioxidant and anti-tyrosinase activity and phenolic profiles of three extracts (ethyl acetate, methanol and water) obtained from different anatomical parts (bulb, stem and seed) of Ornithogalum narbonense. Antioxidant activity of the extracts was evaluated using DPPH*, ABTS+*, FRAP, CUPRAC, metal chelating and phosphomolybdenum assays. Tyrosinase inhibitory activity was measured using the modified dopachrome method with l-DOPA as the substrate. Phenolic content of the extracts varied according to plant part and extraction solvent and included HPLC-DAD, epicatechin, rutin, ferulic, protocateuchic p-hydroxybenzoic, chlorogenic, caffeic, benzoic and rosmarinic acids. The ethyl acetate extract of O. narbonense bulb samples demonstrated the most antioxidant and anti-tyrosinase activity and had the highest phenolic content. All other extracts showed moderate antioxidant and anti-tyrosinase activity. O. narbonense extracts, especially ethanol extract of O. narbonense bulbs, may have dietary and medicinal applications.
Atıf Kaynağı
Atıf Yapan Yayın
HPLC-MS/MS Profiling and Evaluation of Antioxidant and Enzyme Inhibitory Activities of Glycyrrhiza glabra L. Crude Extracts
Scopus
Havuzumuzda
The present study aimed to investigate the phytochemical and biological screening of Glycyrrhiza glabra L. aerial parts and roots. Extracts were obtained by maceration using solvents of increasing polarity (chloroform, ethyl acetate, and methanol). HPLC-MS/MS analysis led to the identification of 26 phenolic compounds, with hyperoside followed by delphinidin-3,5-diglucoside and isoquercitrin identified as the main constituents of the aerial parts methanolic extract. The total phenolic and flavonoid contents varied in the range of 54.39–144.09 mg GAE/g and 16.47–65.19 mg RE/g, respectively. The phosphomolybdenum assay yielded a total antioxidant capacity of 1.64–3.40 mmol TE/g. The ability of the extracts to neutralize free radicals ranged between 45.27 and 171.00 mg TE/g for DPPH and 94.51 to 454.14 mg TE/g for ABTS assays. Furthermore, the reducing power assays, evinced that the extracts display significant activity with values ranging from 58.48 to 291.61 mg TE/g (FRAP) and 110.12 to 472.24 mg TE/g (CUPRAC). Moreover, G. glabra L. exhibited notable inhibitory effects against several enzymes (acetylcholinesterase, butyrylcholinesterase, α-tyrosinase, α-glucosidase, and α-amylase). Overall, the obtained results provide scientific evidence supporting the traditional use of the plant and suggest its potential as a promising source of bioactive compounds for further pharmacological investigation.
Atıf Yapan Makale Bilgileri
Kurumlar (5)
Al-Muthanna University
Samawah, Iraq
Faculté des Sciences de Monastir
Monastir, Tunisia
Selçuk Üniversitesi
Selçuklu, Turkey
Technical University of Denmark
Lyngby, Denmark
Università degli Studi di Camerino
Camerino, Italy