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https://open.uns.ac.rs/handle/123456789/3543
Nаziv: | Phenolic profile and antioxidant properties of dried buckwheat leaf and flower extracts | Аutоri: | Mišan A. Šarić B. Milovanović, Ivan Jovanov P. Sedej I. Tadić V. Anamarija Mandić Sakač, Marija |
Dаtum izdаvаnjа: | 1-јан-2017 | Čаsоpis: | Chemical Industry and Chemical Engineering Quarterly | Sažetak: | © 2017, CI and CEQ. All Rights Reserved. Due to a high content of rutin (2-10%), dried buckwheat leaf and flower (DBLF) formulations were shown to be efficient in the treatment of vascular diseases. In order to find a cost effective way for the extraction of antioxidants, the effects of ethanol/water ratio and temperature on the extraction efficiency of phenolic compounds and the mechanisms of antioxidant action of the extracts were tested. Extraction with ethanol/water mixture (80:20, v/v) for 24 h at room tempe-rature, after the mixture was just brought to boil was demonstrated to be an efficient and cheap way for obtaining a high yield of rutin (49.94±0.623 mg/g DBLF). The most abundant phenolic compounds in DBLF extracts were rutin and chlorogenic acid. Flavonoids, especially rutin, were shown to be the most res-ponsible for the antioxidant activity in all investigated lipid model systems, acting as free radical scavengers, electron-donating substances and chelators of iron ions. In β-carotene bleaching tests, the extracts with the highest activity were as efficient as BHT (butylated hydroxytoluole). Regarding the results of antihemo-lytic and Schaal oven tests, the extracts demonstrated remarkable ability to inhibit the oxidative destruction of erythrocytes and to prolong the beginning of the oxidation process in sunflower oil. | URI: | https://open.uns.ac.rs/handle/123456789/3543 | ISSN: | 14519372 | DOI: | 10.2298/CICEQ150704004M |
Nаlаzi sе u kоlеkciјаmа: | FINS Publikacije/Publications |
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