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In vitro enzyme inhibitory properties, antioxidant activities, and phytochemical profile of Potentilla thuringiaca
Scopus
Toplam 432 atıf DOI
The genus Potentilla is interesting for the pharmaceutical field due to its valuable medicinal properties, which have been observed in complementary and alternative medicine. In recent years, studies conducted to estimate the biological activity of several of the Potentilla species have shown a wide spectrum of therapeutic properties. In particular, in the present paper, different extracts obtained from the herb P. thuringiaca were analysed for antioxidant and enzyme inhibitory activities. The UHPLC-DAD-MS3 hyphenated techniques reported herein allow for the identification of phytoconstituents. The analyses showed the presence of flavonoids and ellagitannins as major components. Furthermore, the data demonstrated that the analysed extracts revealed a high total antioxidant capacity in the phosphomolybdenum assay. The free radical scavenging activity of the extracts was evaluated using DPPH and ABTS assays. The reducing power activity of P. thuringiaca was also determined by FRAP and CUPRAC assays, as well as metal chelating activity. In addition, the total extracts and the different fractions of P. thuringiaca revealed potent inhibitory activities against α-amylase and α-glucosidase, AChE, tyrosinase and lipase. Surprisingly, no activity against BChE was shown. P. thuringiaca could be a valuable natural source of antioxidants with interesting inhibitory actions against the key enzymes involved in several human diseases, and could represent a valid starting point for the development of new treatment and management strategies, including its use as a food supplement.
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Metabolite profiling and bioactivity of Cicerbita alpina (L.) Wallr. (Asteraceae, Cichorieae)
Scopus
Havuzumuzda Open Access 17 atıf almış
Cicerbita alpina (L.) Wallr. is a perennial herbaceous plant in the tribe Cichorieae (Lactuceae), Asteraceae family, distributed in the mountainous regions in Europe. In this study, we focused on the metabolite profiling and the bioactivity of C. alpina leaves and flowering heads methanol-aqueous extracts. The antioxidant activity of extracts, as well as inhibitory potential towards selected enzymes, involving in several human diseases, including metabolic syndrome (α-glucosidase, α-amylase, and lipase), Alzheimer’s disease, (cholinesterases: AChE, BchE), hyperpigmentation (tyrosinase), and cytotoxicity were assessed. The workflow comprised ultra-high-performance liquid chromatography—high-resolution mass spectrometry (UHPLC-HRMS). UHPLC-HRMS analysis revealed more than 100 secondary metabolites, including acylquinic, acyltartaric acids, flavonoids, bitter sesquiterpene lactones (STLs), such as lactucin, dihydrolactucin, their derivatives, and coumarins. Leaves showed a stronger antioxidant activity compared to flowering heads, as well as lipase (4.75 ± 0.21 mg OE/g), AchE (1.98 ± 0.02 mg GALAE/g), BchE (0.74 ± 0.06 mg GALAE/g), and tyrosinase (49.87 ± 3.19 mg KAE/g) inhibitory potential. Flowering heads showed the highest activity against α-glucosidase (1.05 ± 0.17 mmol ACAE/g) and α-amylase (0.47 ± 0.03). The obtained results highlighted C. alpina as a rich source of acylquinic, acyltartaric acids, flavonoids, and STLs with significant bioactivity, and therefore the taxon could be considered as a potential candidate for the development of health-promoting applications.
Atıf Yapan Makale Bilgileri
Kurumlar (4)
Christian-Albrechts-Universität zu Kiel
Kiel, Germany
Institut Jean Lamour
Nancy, France
Medical University of Sofia
Sofia, Bulgaria
Selçuk Üniversitesi
Selçuklu, Turkey