ISSN 2756-3685
International Journal of Enology and Viticulture ISSN 3426-7212 Vol. 2 (1), pp. 099-102, January, 2015. © International Scholars Journals
Full Length Research Paper
Total phenolics and antioxidant activity of jujube (Zizyphus jujube Mill.) genotypes selected from Turkey
Önder Kamilo lu1, Sezai Ercisli2, Memnune engül2, Celil Toplu1 and Sedat Serçe1*
1Department of Horticulture, Faculty of Agriculture, Mustafa Kemal University, 31100 Antakya, Turkey.
2Department of Horticulture, Faculty of Agriculture, Ataturk University, 25240 Erzurum, Turkey.
*Corresponding author. E-mail: [email protected]. Tel: +90 326-245 5845/1086, Fax: +90 326-245 5832.
Accepted 23 January, 2013
Abstract
We determined the total phenolic content and antioxidant activity of methanol extracts from fifteen selected jujube genotypes endogenous to the Mediterranean region of Turkey. Total phenolic content of the fruits was analyzed by Folin-Ciocalteu colorimetric method, while the total antioxidant activity was analyzed using the -carotene bleaching, ferric ion reducing antioxidant power (FRAP) and 2,2-diphenil-1-picrylhydrazyl radical scavenging capacity (DPPH) assays. The highest total phenolic content was observed in MHS 6 and MHS 7 genotypes (42 and 40 mg gallic acid equivalent (GAE) g -1 dry weight (DW)), while the lowest content was found in MHS 5 and MHS 14 (28 and 25 mg GAE g -1 DW). MHS 13 was among the genotypes with the highest antioxidant capacity in all three methods tested (1237 µmol g- 1 in FRAP, 83% in - carotene bleaching method and 99% in DPPH). The present study demonstrates the potential value of jujube genotypes for pharmaceuticals and nutrition.
Key words: Antioxidant capacity, drying, foods of plant origin, fruits, phenols.