Gökçe ŞEKER KARATOPRAK, Mehmet FIRAT, Müberra KOŞAR

Pelargonium quercetorum Agnew. bitkisinin antioksidan aktivitesinin belirlenmesi

Amaç: Antiparaziter olarak geleneksel kullanımı mevcut olan Geraniaceae familyasına dahil Pelargonium quercetorum Agnew.’in toplam fenolik madde miktarı ve antioksidan aktivitesinin araştırılması amaçlanmıştır. Yöntem: P. quercetorum'un toprak altı kısımlarından hazırlanan %70 metanol ve %11 etanol ekstreleri ile toprak üstü kısmından hazırlanan %70 metanol ekstresinin toplam fenolik, flavonoit ve flavonol içerikleri spektrofotometrik olarak incelenmiştir. Ekstrelerin antioksidan aktivitelerini belirlemek amacıyla 1.1-difenil-2-pikrilhidrazil (DPPHl) ve 2.2’-azino-bis (3-etilbenzotiazolin-6- sulfonik asit) (ABTS+l) radikal süpürücü etkileri, Fe(III)’ü Fe(II)’ye indirgeme özellikleri ve demir(II) şelat (kelat) aktiviteleri incelenmiştir. Bulgular ve Sonuç: %70 Metanol kök ekstresinin toplam fenolik ve flavonoit (242.29 ± 5.52 mgGAE/gekstre, 64.95 ± 2.93mgCA/gekstre) içerik bakımından zengin olduğu ve antioksidan aktivite deneylerinde de güçlü etki gösterdiği belirlenmiştir.

Anahtar Kelimeler:

Geraniaceae, Pelargonium quercetorum, antioksidan aktivite

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