Rich Extract On Total Polyphenols And Antioxidant Activity Obtained By Conventional And Non-conventional Methods From Ahmeur Bouamer Grape Seed
No Thumbnail Available
Date
2016-09-01
Journal Title
Journal ISSN
Volume Title
Publisher
University of Eloued جامعة الوادي
Abstract
Conventional and non-conventional extraction methods were applied in the first time for the determination of total polyphenols from Ahmeur Bouamer, an anthoctonous variety grape seeds. Independently of the time and temperature, a positive effect of particle size parameter on maceration has been noted and relativly high concentrations in polyphenols for 500 μm (67.78 ± 0.46 mg GAE/gdm), 500-355 μm (90.95 ± 0.24 mg GAE/gdm) and 355-180 µm (114.82 ± 1.24 mg GAE/gdm) have been obtained. The higher value of yield was reached by the microwave extraction (37.74±0.32%), followed by the maceration (14.16±0.15%) and the ultrasound (6.70±0.25%). The appropriate extraction method to obtain a relatively strong antioxidant activity from seeds was the microwave with inhibition of 69.67±1.76 % and 78.05±2.05% of DPPH and ABTS+ free radicals, respectively.
Description
Articale in Journal of fundamental and Applied Sciences Vol. 08, N. 03
Keywords
Ahmeur Bouamer, extraction, grape seeds, total polyphenols, antioxidant activity.
Citation
Articale in Journal of fundamental and Applied Sciences Vol. 08, N. 03