Influence of extraction solvent on antioxidant capacity value of oleaster measured by ORAC method
Makaleler > Tam Makale · 2014
Yazarlar: GÖRKEM YALÇIN, Özlem SÖĞÜT
NATURAL PRODUCT RESEARCH, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2014, cilt 28, ss 1513-1517
DOI: 10.1080/14786419.2014.913243
Özet
Oxygen radical absorbance capacity (ORAC) is a widely used hydrogen atom transfer-based method which measures the antioxidant capacity of natural products. ORAC values of oleaster (Elaeagnus angustifolia L.), which was extracted with ethanol/acetone (7: 3, v/v), ethanol/water (1: 1, v/v) and methanol/water (1: 1, v/v) in order to evaluate the effects of solvent type on antioxidant capacity, were examined. In general, results revealed that ethanol/water extracts exhibited better antioxidant capacity values. Furthermore, results obtained by using ORAC-eosin y (ORAC-EY), one of the widely used derivative of fluorescein (FL), as a fluorescent probe were compared with those obtained by using ORAC-FL. According to the results, ORAC-EY values were found to be compatible with ORAC-FL values.