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J Herbmed Pharmacol. 2016;5(1): 33-38.
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  PDF Download: 1057

Original Article

Polyphenolic burden and in vitro antioxidant properties of Moringa oleifera root extracts

Ioanna Karagiorgou 1, 2, Spyros Grigorakis 3, Stavros Lalas 2, Dimitris Makris 1*

1 School of Environment, University of the Aegean, Mitr. Ioakim Street, Myrina–81400, Lemnos, Greece
2 Department of Food Technology, Technological Educational Institute (T.E.I.) of Thessaly, N. Temponera Street, Karditsa–43100, Greece
3 Food Quality & Chemistry of Natural Products, Mediterranean Agronomic Institute of Chania (M.A.I.Ch.), International Centre for Advanced Mediterranean Agronomic Studies (CIHEAM), P.O. Box 85, Chania-73100, Greece

Abstract

ntroduction: Moringa oleifera is a small tree with very significant nutritional but alsopharmacological properties and various preparations from almost all parts of the plant (leaves,fruit, stems, bark, roots) are used in folk medicine for treating several ailments. This study aimedto investigating the polyphenolic burden and in vitro antioxidant properties of M. oleifera rootextracts, obtained with solvents covering a range of polarities.Methods: Lyophilised Moringa oleifera roots were extracted with solvents of increasing polarity,including ethyl acetate, butanol, methanol and water. The generated extracts were screened forpolyphenolic load and antioxidant activities, by determining the total polyphenol, total f lavonoid,total f lavanol, antiradical activity and reducing power. Liquid chromatography-mass spectrometrywas also employed to obtain some evidence regarding the nature of the main constituents.Results: The results indicated that both aqueous and methanolic extracts were the richestin total polyphenols, but the aqueous extract also exhibited high reducing power. The liquidchromatography-diode array-mass spectrometry analysis also revealed that the major substancesoccurring in the aqueous extract were relatively polar molecules, but the mass spectral data wereambiguous to assign tentative structures.Conclusion: Polar solvents, such as water, may be effectively used to recover high amounts of M.oleifera root phenolics, which possess important antioxidant properties. 
Keywords: Antioxidant, Moringa oleifera roots, Polyphenols
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Revision: 05 Jul 2015
ePublished: 06 Dec 2015
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