Antioxidant and Anticholinesterase Activities of Juglans Regia L. Growing in Turkey

Abstract

Objective: World's ageing population continues to grow older together with high percentage prevalence of Alzheimer's disease encourage science to find herbs or biologic compounds which can be utilized for it prophylaxis. Juglans regia L. is not simply an agricultural product, its fruits, leaves, barks, stems, pericarps, and flowers are all utilized for diversified medicinal usages. In the present investigation, we examined the anticholinesterase and antioxidant capacities of the lyophilized aqueous extracts of leaves from J. regia. Material and Method: Phenolic contents and antioxidant activity were assessed by Folin-Ciocalteu's, qualitative/quantitative DPPH and TBA methods. Anticholinesterase activity was assessed by Ellman's method. Result and Discussion: The total phenolic content was found 478.32 mg/g. The extract indicated antioxidant activity with DPPH test (IC50: 123.66 μg/mL) and TBA assay (IC50: 209.23 μg/mL). Moreover, the extract of J. regia indicated remarkable inhibition towards acetylcholinesterase (40.09%) and butyrylcholinesyterase (56.23%) enzymes. These data propose that J. regia can be utilised a potency for pharmaceutical products which get antioxidant and anticholinesterase activity.

Superior Valorisation of Juglans regia L. Leaves of Different Maturity through the Isolation of Bioactive Compounds

“…The mean values of TPC for experiments 1-12 are presented in Table 5, and the corresponding levels of model factors are listed in Table 6. The effects of considered categorical factors (leaves maturity and solvent) on total polyphenol content were quantified using a statistical model presented in Equation (5). Predicted values of total polyphenol content (TPC pred ) and related residuals (∆TPC) are also presented in Table 6.…”

“…Juglans regia L. belongs to the family Juglandaceae, which includes a few species and is largely spread out around the world [4]. The walnut crops are predominant in moderate-climate regions, being abundant in the North-Western Himalayas of Kashmir, which produces most of the world's walnuts (around 88% of total walnut production), while the United States, North Africa, western South America, southern Europe, and East Asia are the largest traders of nuts and nut derivatives [4,5].…”