Influence of extraction solvent on antioxidant capacity value of oleaster measured by ORAC method

Yalcin G. , Sogut O.

NATURAL PRODUCT RESEARCH, vol.28, no.18, pp.1513-1517, 2014 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 18
  • Publication Date: 2014
  • Doi Number: 10.1080/14786419.2014.913243
  • Page Numbers: pp.1513-1517


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.