Anti-oxidant activities and total phenolics contents of leaf extracts from 14 cultivars of walnut (Juglans regia L.)

作者：Cosmulescu S^*; Trandafir I

来源：Journal of Horticultural Science & Biotechnology, 2012, 87(5): 504-508.

Walnut (Juglans regia L.) leaves provide a source of healthy compounds, phenolics, which could be useful for the prevention of diseases in which free radicals are involved. In this study, walnut leaves from 14 different cultivars were studied for their total phenolics contents and anti-oxidant activities. Anti-oxidant activities were evaluated by measuring the scavenging activities of leaf extracts against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals. The total phenolics contents of the cultivars ranged from 17.7 mg gallic acid equivalents (GAE) g(-1) FW to 39.6 mg GAE g(-1) FW. The highest scavenging activities were found in methanol extracts of walnut leaves. Total phenolics contents were highly correlated with anti-oxidant activity (R-2 = 0.94 - 0.92).

• 出版日期2012-9