| Autor: |
Tair A; a Food Quality & Chemistry of Natural Products, Mediterranean Agronomic Institute of Chania (M.A.I.Ch.)/Centre International de Hautes Etudes Agronomiques Méditerranéennen , P.O. Box 85, Chania 73100 , Greece., Weiss EK, Palade LM, Loupassaki S, Makris DP, Ioannou E, Roussis V, Kefalas P |
| Jazyk: |
angličtina |
| Zdroj: |
Natural product research [Nat Prod Res] 2014; Vol. 28 (16), pp. 1284-7. Date of Electronic Publication: 2014 Mar 18. |
| DOI: |
10.1080/14786419.2014.896011 |
| Abstrakt: |
Extracts from three Origanum species, including Origanum microphyllum, Origanum dictamnus and Origanum vulgare subsp. hirtum, native to the island of Crete (southern Greece), were partly fractionated through successive partition with ethyl acetate and n-butanol. All the fractions obtained were profiled with regard to their major polyphenolic constituents, using liquid chromatography-diode array-mass spectrometry. Furthermore, the antioxidant potency of each fraction was assessed by estimating the antiradical activity (A(AR)) and the hydroxyl free radical scavenging activity (SA(HFR)). The chromatographic analyses revealed a rich profile mainly for the ethyl acetate fractions, composed principally by flavones, which were accompanied by a limited number of phenylpropanoids, flavanones and dihydroflavonols. The highest values of antioxidant activity were displayed by the ethyl acetate extract of O. dictamnus, which also possessed the richest polyphenolic composition. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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