De-etiolasyon Sürecinde Fasulye (Phaseolus vulgaris L.) Yapraklarında Antioksidan Enzim Aktiviteleri ve Toplam Fenolik Bileşik Miktarlarında Değişimler

Yıl 2018, Cilt: 7 Sayı: 3, 70 - 76, 15.12.2018

Bülent Akgül Lokman Öztürk Dursun Kısa Nusret Genç

Öz

Bu çalışmada, de-etiyole
fasulye fidelerinde antioksidan enzim aktiviteleri, hidrojen peroksit,
malondialdehit ve total fenolik madde miktarları araştırılmıştır. De-etiyole
fasulye yapraklarında katalaz (CAT), peroksidaz (POD) ve askorbat peroksidaz
(APX) aktiviteleri kontrol (ışık) grubuyla karşılaştırıldığında kısmi olarak
yüksek olduğu görülmüştür. De-etiyole fasulye bitkisinde lipid peroksidasyonu kontrol
grubundan önemli oranda yüksek olmasına rağmen hidrojen peroksit miktarında
önemli bir fark yoktur. Total fenolik bileşikler kontrol ve de-etiyole
bitkilerde yüksek oranda gözlenirken etiyole fidelerde belirlenememiştir.
Karanlık-ışık geçişlerinde oksidatif hasar azalırken total fenolik bileşik
miktarında artış meydana gelmiştir. 

Anahtar Kelimeler

De-etiyole, fasulye, hidrojen peroksit, lipid peroksidasyonu

Kaynakça

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