Acta Pharm. 65 (2015) 99-104
Differences in antioxidant properties of ginkgo leaves collected from male and female trees
NOÉMI KOCZKA, ZSUZSANNA MÓCZÁR, ÉVA STEFANOVITS-BÁNYAI and ATTILA OMBÓDI
1 Institute of Horticultural Technologies, Faculty of Agricultural and Environmental Science, Szent István University, Gödöllő, Hungary
2 Department of Applied Chemistry, Faculty of Food Science, Corvinus University of Budapest, Budapest, Hungary
Accepted October 9, 2014
Total phenolic content and antioxidant capacity (FRAP method) of Ginkgo biloba L. leaves collected from male and female trees were determined and compared. Different water and aqueous ethanolic (water/ethanol 80/20, V/V) extracts were prepared by varying the time of infusing, boiling and steeping in order to determine the effect of the extraction method on the above parameters. Antioxidant activity and phenolic content of ginkgo leaf extracts correlated well with significant correlation coefficients. Slopes of linear regression lines were not statistically different for either sex.
Keywords: Ginkgo biloba L., male ginkgo, female ginkgo, ginkgo extract, phenolics, FRAP, NSAID, twin drug, conjugate, radical scavenging, antioxidant activity, chelating ability