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Survey of phytochemical composition and biological effects of three extracts from a wild plant (Cotoneaster nummularia Fisch. et Mey.): A potential source for functional food ingredients and drug formulations
Scopus
Open Access Toplam 120 atıf DOI
This study was focused on the analysis of the phenolic content, antioxidant, antibacterial, anti-cholinesterase, anti-tyrosinase, anti-amylase and anti-glucosidase activity of three solvent extracts from Cotoneaster nummularia. Moreover, water extract was tested in terms of mutagenic/anti-mutagenic effects. The antioxidant activities of these extracts were evaluated by DPPH, ABTS, O2, metal chelating, phosphomolybdenum, b-carotene/linoleic acid, ferric and cupric reducing power assays. Enzyme inhibitory activities were also examined with colorimetric methods. Generally, methanol and water extracts exhibited excellent biological activities. These extracts were rich in phenolic and flavonoid content. Furthermore, Cotoneaster extracts indicated appreciable antibacterial properties against human pathogen strains. HPLC analysis showed that ferulic acid, chlorogenic acid, (-)-epicatechin and (+)-catechin were the major phenolics in extracts tested. These data offer that these extracts from C. nummularia may be considered as a potential source of biological agents for developing functional foods or drug formulations. Copyright:
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Screening for antioxidant and antimutagenic properties of extracts from centaurea pterocaula as well as their enzyme inhibitory potentials
Scopus
Havuzumuzda 15 atıf almış
The purpose of this study was to evaluate the antioxidant capacities, mutagenic/antimutagenic propeties and enzyme inhibitory effects of three extracts (ethyl acetate, methanol and water) of Centaurea pterocaula. The antioxidant properties were investigated using in vitro antioxidant methods such as radical scavenging (DPPH assay), reducing power (FRAP and CUPRAC assays), phosphomolybdenum and metal chelating activity. Enzyme inhibitory effects were tested aganist cholinesterase, tyrosinase, amylase and glucosidase. Ames test was used to show mutagenic/antimutagenic properties of these extracts. Methanol extract had the strongest free radical scavenging (31.06 mgTE/g extract) and reducing power abilities (66.95 mgTE/g extract for CUPRAC and 51.03 mgTE/g extract for FRAP). Also, ethyl acetate extract exhibited the strongest effect on the tested enzymes (except for glucosidase). Total phenolic and flavonoid contents were found to be 15.77-25.22 mg GAE/g extract and 0.67-31.44 mg RE/g extract, respectively. The mutagenicity was not seen for all extracts tested, while it was determined that some samples had significant antimutagenicity. In the condition of presence of S9 mix, ethyl acetate and methanol extracts revealed excellent antimutagenic activity (92% and 92%) at a dose of 5000 μg/plate against 2-aminoflourene (2-AF) for TA98 strain. According to the results of the present study, C. pterocaula can be considered as a potential source for developing new nutraceuticals or pharmaceuticals.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey