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Sideritis galatica Bornm.: A source of multifunctional agents for the management of oxidative damage, Alzheimer's's and diabetes mellitus
Scopus
Toplam 130 atıf DOI
The antioxidant and enzyme inhibitory potential of different solvent extracts (petroleum ether, ethyl acetate, methanol and water) from Sideritis galatica were evaluated. Cholinesterase, α-amylase and α-glucosidase inhibitory activities of the extracts were tested by microtiter plate assays. Antioxidant abilities were tested using free radical scavenging (DPPH (1,1-diphenyl-2-picrylhydrazyl), ABTS (2,2'-azino-bis(3-ethylbenzothiazoline)-6-sulfonic acid) and NO), reducing power (FRAP (ferric reducing antioxidant power) and CUPRAC (cupric reducing antioxidant capacity)), total antioxidant capacity and chelating assays. Methanol and water extracts showed higher phenolic content, DPPH and ABTS scavenging activity and reducing power activities, while the petroleum ether and ethyl acetate extract had the highest inhibition abilities on the enzymes. 18 phenolic components in these extracts were detected by using high performance liquid chromatography-diode array detector (HPLC-DAD). Results obtained in this work indicate that S. galatica may be useful as a source of natural agents for the management of oxidative process, Alzheimer's disease and type II diabetes.
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Novel perspectives on two Digitalis species: Phenolic profile, bioactivity, enzyme inhibition, and toxicological evaluation
Scopus
Havuzumuzda Open Access 14 atıf almış
The present study outlines the phenolic composition of methanolic extracts of Digitalis ferruginea and Digitalis lamarckii aerial parts and evaluates their biological activities. The quantification of phenolic compounds was carried out by HPLC–DAD analysis. Antioxidant properties were assessed using different assays. Enzyme inhibition was tested on AChE, BChE, α-amylase, α-glucosidase, and tyrosinase. The antimicrobial properties of the extracts were determined using the microdilution method. Genotoxicity of the extracts was assessed on Drosophila melanogaster by comet assay. D. lamarcki extract was richer in phenolic compounds than D. ferruginea, with chlorogenic acid as dominant compound in both D. lamarckii and D. ferruginea extracts (2.99 and 1.30 mg/g, respectively). Both extracts showed similar values in terms of antioxidant activity. The extracts showed enzyme inhibitory activity on above-mentioned enzymes and moderate antimicrobial activity (MIC range 0.625–10 mg/mL). D. ferruginea extract (20 mg/mL) indicated the absence of genotoxicity, while all concentrations of D. lamarckii extract showed significant DNA damage. Antigenotoxic effect was more evident in the group treated with D. lamarckii extract, 80 mg/mL (%R = 80.3). The results emphasized the biological potential of examined plants and encourage further studies for their potential use as phytopharmaceuticals.
Atıf Yapan Makale Bilgileri
Kurumlar (2)
Selçuk Üniversitesi
Selçuklu, Turkey
University of Kragujevac
Kragujevac, Serbia