Effect of various inhibitors on enzymatic browning, antioxidant activity and total phenol content of fresh-cut rocket salad (Eruca sativa Mill.)

Abstract

Bu çalışmada, taze roka salatasında bulunan polifenoloksidaz (PPO), dietilaminoetil selüloz (DEAE) ile doldurulmuş kolon üzerinden kısmen saflaştırılmıştır. Optimum sıcaklığı 30 °C ve pH 6.0 olarak bulunmuştur. Roka PPO, en yüksek substrat spesifikliğini kullanılan substratlar arasında kateşol ile göstermiştir. Askorbik asit, sistein, okzalik asit ve sitrik asit potansiyel inhbitörler olarak test edilmiştir. En etkili inhibitor sistein olarak belirlenmiştir. Askorbik asit toplam antioksidan aktiviteyi arttırken, kullanılan inhibitörlerin Rokada bulunan fenolik bileşiklerin oksidasyonunu önlediği tespit edilmiştir

Keywords

• rocket salad (Eruca sativa Mill.),enzymatic browning,phenolic compounds,inhibitors

References

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