Hatice DANAHALİLOĞLU, Yener TEKELİ, Sezer GÖYCINCIK, Figen YILDIRIM

Hatay’da Farklı Bölgelerde Yetiştirilen Zeytin Yapraklarının Antioksidan Özelliklerinin Belirlenmesi

Bu çalışmada, Hatay’da farklı bölgelerde yetiştirilen Halhalı türü zeytin (Olea europaea)ağaçlarının yapraklarının metanol ekstraktlarının antioksidan aktiviteleri belirlenmiştir. Toplam fenolik madde miktarları Folin-Ciocaltaeu yöntemi ile tayin edilmiştir. Antioksidan özelliklerini belirlemek için kullanılan diğer yöntemler DPPH radikal süpürme yöntemi, FRAP indirgeme gücü metodu ve β-karoten-linoleik asit emülsiyon yöntemidir. Sonuçlar standart antioksidanlar ile (BHA, BHT) kıyaslanmıştır. İncelenen tüm bölgelerin zeytin yapraklarının antioksidan aktiviteye sahip olduğu belirlenmiştir.

Anahtar Kelimeler:

Zeytin yaprağı, toplam fenolik madde, antioksidan aktivite, dpph

Determination of Antioxidant Properties of Olive Leaves Grown in Different Regions in Hatay

In this study; antioxidant activities of metanol extracts of olive leaf (Olea eueopaea) which is grown in different parts of Hatay were determined. Total phenolic contents were determined by the Folin-Ciocaltaeu method. The other methods used to determine the antioxidant characteristics were 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method, ferric ion reducing power (FRAP) and β-carotene-linoleic acid emulsion method. The results were compared with the standard antioxidants butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT). It was determined that olive leaves in all regions examined had antioxidant activity.

Keywords:

Olive leaf, total phenolic content, antioxidant activity, DPPH,

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