Affiliation:
1. Faculty of Technology, Leskovac
Abstract
Strawberry is a member of the rose family (Rosaceae, subfamily Rosoideae,
tribe Potentilleae) in the genus Fragaria. The cultivated varieties of
commercial strawberries usually were designated as Fragaria ananassa. Root,
leaf, flower and fruit have the healing properties. The strawberry leaves
extract is used for blood cleaning, for treatment of oral inflammation,
diarrhea, various gastro-intestinal inflammation, and hemorrhoids, as well as
a diuretic. So far, many positive biological effects of strawberries
(anticancer, antioxidant and anticoagulant effect) have been proven. The
purpose of this study was to evaluate the antioxidant potential of ethanolic
extract from cultivated strawberries (Fragariae folium, varieties Senga
Sengana) by using different antioxidant assays (DPPH, FRAP, FIC, H2O2 and
TBA-MDA). Ethanolic extract from strawberry leaves was obtained by reflux
extraction at the boiling temperature. Total phenols and total flavonoids
content was determined spectrophotometrically by the method of
Folin-Ciocalteu and by method with AlCl3, respectively. In the extract was
determined high content of total phenols, while the total flavonoid content
is much lower. The concentrations of extract required to neutralize 50% of
the initial concentration of DPPH radicals (EC50) after 20 minutes incubation
and immediately after adding DPPH radical solution were 7,91 and 19,46
?gcm-3, respectively. Extract was achieved the maximum iron ions chelating
ability (67.89%) at a concentration of 2 mgcm-3. Inhibition of lipid
peroxidation of 70% was achieved by extract concentration of 0.03125 mgcm-3,
while the maximum neutralization of H2O2 (30.47%) was achieved by extract
concentration of 0.5 mgcm-3. FRAP value of the investigated extract is 284.51
mgFe/g of dry extract. Presented results of the antioxidant activity show
that the obtained extract from the cultivated strawberry leaves is a
potential source of natural antioxidants.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
General Chemical Engineering,General Chemistry
Cited by
3 articles.
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