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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.
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Insight into the biological properties and phytochemical composition of Ballota macrodonta Boiss. et Balansa, — an endemic medicinal plant from Turkey
Scopus
Havuzumuzda 14 atıf almış
Ballota macrodonta Boiss. et Balansa., is a traditionally used endemic medicinal plant used to manage a plethora of diseases in Turkey. Nonetheless, few studies have endeavoured to highlight its therapeutic potential and its phytochemical profile. We hypothesized that B. macrodonta would possess multi-pharmacological propensities and bioactive compounds that would justify its use as a folk remedy. Aerial part of B. macrodonta was assessed for its antioxidant, antimicrobial, and enzymatic inhibitory potential using different extraction solvents. The total bioactive components determination and compound identification using High-Performance Liquid Chromatography with Diode-Array Detection (HPLC-DAD) method were used to correlate the biological properties. HPLC-DAD profile showed the presence of 19 components (e.g. hydroxybenzoic acid, catechin hydrate, vanillic acid, caffeic acid, syringic acid, epicatechin, coumaric acid, ferulic acid, luteolin-7-O-glucoside, rutin, and quercetin). The water and methanolic extracts showed high total phenolic and flavonoid contents, respectively. The overall antioxidant capacity of the water extract was higher than the one of the methanol extract. The extracts showed inhibitory activity against cholinesterases, tyrosinase, α-amylase and α-glucosidase. The extracts also presented antimicrobial activity against eight Gram positive/negative bacteria (MIC – 0.05–0.15 mg/mL) and eight fungi (MIC – 0.0125–0.20 mg/mL). The presence of active biomolecules with multi-pharmacological properties makes B. macrodonta a potential source of health-promoting compounds that can be exploited as a novel medicinal herbal product.
Atıf Yapan Makale Bilgileri
Kurumlar (6)
Faculdade de Ciências da Universidade de Lisboa
Lisbon, Portugal
Selçuk Üniversitesi
Selçuklu, Turkey
Universidade do Algarve
Faro, Portugal
Universitatea de Medicina si Farmacie Iuliu Hatieganu din Cluj-Napoca
Cluj Napoca, Romania
University of Belgrade
Belgrade, Serbia
University of Mauritius
Reduit, Mauritius