Total phenolics, total flavonoids and antioxidant activity of Moringa oleifera grown in different locations of Giresun-Türkiye

Öz

In this study, nitrogen (N), protein, total phenolics, total flavonoids and antioxidant activity were investigated in dried samples of the Moringa oleifera plant grown in Bulancak, Çamoluk, Espiye, Şebinkarahisar and Tirebolu districts of Giresun province in Türkiye. The analyses were performed by DPPH and FRAP methods for antioxidant activity. In the study, the plants grown in Bulancak location had significantly higher nitrogen, protein and antioxidant activity than other growing regions. On the contrary, significantly lower nitrogen and protein were measured in plants grown in Espiye and Tirebolu. The total phenolics and total flavonoids were determined the highest in plants grown in Espiye and Tirebolu locations, the lowest values in Çamoluk and Şebinkarahisar locations. According to the antioxidant activity tests, the antioxidant activity of the plants grown in Espiye location was significantly higher than in other growing regions. The lowest antioxidant activity was measured in Şebinkarahisar and Çamoluk locations. As a result, it was revealed that region conducted the cultivation affects on the protein and bioactive compounds of the Moringa oleifera plant. Espiye, Bulancak and Tirebolu locations can be recommended for cultivation.

Anahtar Kelimeler

• Antioxidant
• DPPH
• flavonoids
• Moringa oleifera
• phenolics
• protein

Giresun-Türkiye'nin farklı lokasyonlarında yetiştirilen Moringa oleifera’nın toplam fenolikler, toplam flavonoidler ve antioksidan aktiviteleri

Öz

Bu çalışmada Giresun iline bağlı Bulancak, Çamoluk, Espiye, Şebinkarahisar ve Tirebolu ilçelerinde yetiştirilen Moringa oleifera bitkisinin kurutulmuş örneklerinde azot (N), protein, toplam fenol, toplam flavonoid ve antioksidan aktivitesi incelenmiştir. Antioksidan aktivitesi için DPPH ve FRAP testlerine göre analizler yapılmıştır. Araştırmada, Bulancak ilçesinde yetiştiriciliği yapılan bitkilerin, diğer yetiştiricilik bölgelerine göre önemli derecede daha yüksek azot, protein ve antioksidan aktivitesine sahip olduğu tespit edilmiştir. Espiye ve Tirebolu’da yetişen bitkilerde önemli derecede daha düşük azot ve protein ölçülmüştür. Toplam fenol ve toplam flavonoid bakımından, Espiye ve Tirebolu’da yetişen bitkilerde en yüksek; Çamoluk ve Şebinkarahisar’da yetişen bitkilerde en düşük değerler belirlenmiştir. Antioksidan aktivite testlerine göre, Espiye’de yetişen bitkilerin antioksidan aktivitesinin diğer yetiştiricilik bölgelerine kıyasla önemli derecede daha yüksek olduğu saptanmıştır. Aksine en düşük antioksidan aktivitesi, Şebinkarahisar ve Çamoluk lokasyonlarında ölçülmüştür. Sonuç olarak, yetiştiricilik yapılan bölgenin Moringa oleifera bitkisinin protein ve biyoaktif bileşikleri üzerine etkisinin olduğu açığa çıkarılmıştır. Yetiştiricilik için Espiye, Bulancak ve Tirebolu lokasyonları tavsiye edilebilir.

Anahtar Kelimeler

• Antioksidan
• DPPH
• fenol
• flavonoid
• Moringa oleifera
• protein

Kaynakça

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