Antioxidant Properties of Urtica pilulifera Root, Seed, Flower, and Leaf Extract

Özen T., Collu Z., Korkmaz H.

JOURNAL OF MEDICINAL FOOD, cilt.13, sa.5, ss.1224-1231, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 5
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1089/jmf.2009.1303
  • Dergi Adı: JOURNAL OF MEDICINAL FOOD
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1224-1231
  • Anahtar Kelimeler: antioxidant activity, hydroalcoholic extract, phenolic compounds, radical scavenging activity, Urtica pilulifera, PALESTINIAN AREA, PLANTS, CLASSIFICATION, MEDICINE, OXYGEN
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

This study was conducted to evaluate the antioxidative properties of hydroalcoholic (80%) extracts from different parts of Urtica pilulifera L. (Family Urticaceae), including leaf (UPL), flower (UPF), seed (UPS), and root (UPR). Antioxidative activity of the extracts was measured using the ferric thiocyanate method, thiobarbituric acid method, reductive potential, metal chelating, free radical, superoxide anion radical, and hydrogen peroxide scavenging activity. In addition, the results were compared with antioxidants such as tert-butylated hydroxyanisole (BHA), tert-butylated hydroxytoluene (BHT), and alpha-tocopherol. Total antioxidant activities of UPS, UPF, UPL, UPR, BHA, BHT, and alpha-tocopherol were 88.79%, 85.13%, 86.72%, 78.46%, 81.31%, 76.12%, and 46.28%, respectively. Like the antioxidant activity, the reducing power and the superoxide anion radical and free radical scavenging activities of UPL, UPF, UPS, and UPR are concentration dependent. A correlation between higher antioxidant activity and the amount of total phenolics was found in the extracts.