Yüksel KELEŞ, Ceren SAĞIR, Zekiye Ayşe EVEREST

Lamiaceae ve Poaceae familyalarına ait bazı türlerin antiksidan savunma kapasitelerinin karşılaştırmalı olarak incelenmesi

Bitkilerin antioksidan bileşikleri aroma, renk, koku ve koruyucu özellikleri nedeniyle tıbbi ve endüstriyel kullanım amacıyla yoğun olarak araştırılmaktadır. Bu çalışmada, Lamiaceae’den 16 tür ve Poaceae’den 14 tür, Kuzeydoğu Akdeniz bölgesinden toplandı ve analiz edildi. Bitki örneklerinin kuru ağırlık ve su durumları belirlendi. Bu iki familyanın üyeleri arasında klorofil ve karoten değerleri bakımından önemli bir fark olmadığı belirlendi. Lamiaceae türlerinde ortalama ksantofil içeriği (236 µg g-1 FW) Poacea türlerinden (142 µg g-1 FW ) ve total antioksidatif kapasite Lamiacea türlerinde (5.19 mg g-1 FW) Poaceae türlerinden (3.49 mg g-1 FW) daha yüksek bulundu. Buna karşın toplam çözünür fenolikler Poaceae türlerinde ortalama 1.83 mg g-1 FW, Lamiaceae türlerinde 1.67 mg g-1 FW olarak ölçüldü. Süperoksit dismutaz enzim aktivitesi Poaceae türlerinde daha yüksek bulundu. Bulgular iki familya arasında önemli farklılıklar bulunabileceğini ve biyokimyasal kaynakların belirlenmesi bakımından karşılaştırmalı çalışmaların çoğaltılması gerektiğini ortaya koymaktadır.

The comparative investigation of the antioxidant activities of some species belonging to the Lamiaceae and Poaceae families

The antioxidant compounds ofplants have widely been investigated for the purpose of medical and industrial uses due to their aroma,color, smell and protective properties. In the study, 16 species from Lamiaceaeand 14 species from Poaceae were collected from the Northeastern Mediterraneanregion and then they were analysed. The dry weight and water conditions of theplant samples were identified. It was identified that there wasn’t asignificant difference between these two families in respect to their values ofchlorophyll and carotene. The meanxanthophyll content was higher in the Lamiaceae species (236 μg g-1 FW)than in the Poacea species (142 μg g-1 FW) and total antioxidativecapacity was higher in Lamiacea species (5.19 mg g-1 FW) thanPoaceae species (3.49 mg g-1 FW). On the other hand, mean solublephenolics were measured as 1.83 mg g-1 FW in Poaceae species and1.67 mg g-1 FW in Lamiaceae species. Superoxide dismutase enzymeactivity was higher in Poaceae species. The findings revealed that significantdifferences could exist among the families and further comparative studiesshould be performed for the determination of the biochemical resources.

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