Antioxidant and antibacterial activities of Ranunculus marginatus var. trachycarpus and R. sprunerianus
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Tarih
2010
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Ranunculus marginatus d’Urv. var. trachycarpus (Fisch. & Mey.) Azn. ve R. sprunerianus Boiss. bitkilerinin hekzan, etil asetat, metanol ve su ekstrelerinin antioksidan ve antibakteriyal aktiviteleri in vitro olarak test edilmiştir. Ekstrelerin antioksidan aktivitesi DPPH radikal süpürücü ve Troloks eşdeğeri antioksidan kapasite yöntemleriyle tayin edilmiştir. Her iki yöntemde de metanol ekstreleri en yüksek antioksidan aktiviteyi göstermiştir. Ekstrelerdeki total fenol miktarı Folin- Ciocalteau reaktifi kullanılarak kolorimetrik olarak tayin edilmiştir. Ekstrelerin total flavonoid içeriği spektroskopik bir yöntem kullanılarak değerlendirilmiştir. Antioksidan aktivite deneylerinin sonuçları, ekstrelerin total fenol ve flavonoid miktarları ile uyumludur. Antibakteriyel aktivite tayininde disk difüzyon ve mikrodilüsyon teknikleri kullanılmıştır. Disk difüzyon yönteminde bütün ekstreler test edilen bakterilere karşı aktivite göstermiştir. Her iki Ranunculus türünün ekstrelerinin minimal inhibitör konsantrasyonlarının (MİK) 128-256 ?g/mL arasında olduğu bulunmuştur.
Hexane, ethyl acetate, methanol, and aqueous extracts of Ranunculus marginatus d’Urv. var. trachycarpus (Fisch. & Mey.) Azn. and R. sprunerianus Boiss. were tested in vitro for their antioxidant and antibacterial activities. Antioxidant activity of the extracts was determined by DPPH radical scavenging and Trolox equivalent antioxidant capacity assays. Methanol extracts showed the highest antioxidant activity in both assays. The total phenolics in the extracts were determined colorimetrically by using the Folin-Ciocalteau reagent. The total flavonoid content of the extracts was evaluated by a spectrophotometric method. The results obtained in the antioxidant activity tests were in positive correlation with the total phenolic and flavonoid contents of the extracts. An antibacterial activity analysis was carried out using paper disk diffusion and micro-well dilution techniques. All of the extracts displayed antibacterial activity against the tested bacteria in the disk diffusion method. The minimal inhibitory concentrations (MICs) of all the extracts of both Ranunculus species were found to be between 128 and 256 μg/mL.
Hexane, ethyl acetate, methanol, and aqueous extracts of Ranunculus marginatus d’Urv. var. trachycarpus (Fisch. & Mey.) Azn. and R. sprunerianus Boiss. were tested in vitro for their antioxidant and antibacterial activities. Antioxidant activity of the extracts was determined by DPPH radical scavenging and Trolox equivalent antioxidant capacity assays. Methanol extracts showed the highest antioxidant activity in both assays. The total phenolics in the extracts were determined colorimetrically by using the Folin-Ciocalteau reagent. The total flavonoid content of the extracts was evaluated by a spectrophotometric method. The results obtained in the antioxidant activity tests were in positive correlation with the total phenolic and flavonoid contents of the extracts. An antibacterial activity analysis was carried out using paper disk diffusion and micro-well dilution techniques. All of the extracts displayed antibacterial activity against the tested bacteria in the disk diffusion method. The minimal inhibitory concentrations (MICs) of all the extracts of both Ranunculus species were found to be between 128 and 256 μg/mL.
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Biyoloji
Kaynak
Turkish Journal of Biology
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Cilt
34
Sayı
2
