Antioxidant Activity and Total Phenolic Content of Gagea fibrosa and Romulea romiflora
Yükleniyor...
Dosyalar
Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Jihad Daneshgahi
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Free radicals involved in a number of diseases due to the oxidative damage to DNA, lipids, and proteins and which can result in failure of cellular functions. Dried plant bulbs and leaves methanolic and ethanolic extracts were prepared. Total antioxidant activities of the methanolic extracts of Romulea ramiflora and Gagea fibrosa were determined using beta-carotenlinoleic acid assay. Romulea-Bulb-Ethanol (RBE) extract showed the highest (89.64 +/- 1.25%) but, Romulea-Leaves-Ethanol (RLE) extract showed the lowest (33.23 +/- 1.13%) antioxidant activity. The lowest antioxidant activity of the Gagea leaves extract (GLE - Gagea-Leaves-Ethanol, 46.18 +/- 0.09%) was higher (p < 0.05) then Romulea Leaves Extract (RLE -33.23 +/- 1.13%). This may be related with the structure of the plant's leaves cells. The DPPH radical scavenging assay was used to determine the antiradical activities. Gagea-Leaves-Methanol extract (GLM -61.16 +/- 1.46%) has higher DPPH radical scavenging activity than Romulea-Bulb-Methanol extract (RBM -51.27 +/- 0.94%). Generally leaf extracts have the highest free radical scavenging activity. The total phenolic content of extracts was determined using to the Folin-Ciocalteu method. RBE has the highest phenolic content (74,12 +/- 4,6 mg/100 g plant extract). R. ramiflora and G. fibrosa have the antioxidant and free radical scavenging activities. These properties are due to the number of the hydroxyl groups of the phenolic compounds, but not amount of them.
Açıklama
Anahtar Kelimeler
Romulea ramiflora, Gagea fibrosa, antioxidant activity, DPPH, beta-caroten-linoleic acid assay, Folin-Ciocalteu method, Borago-Officinalis L., In-Vitro, Extracts, Vegetables, Fruits
Kaynak
Iranian Journal of Chemistry & Chemical Engineering-International English Edition
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
30
Sayı
3
