Evaluation of anti-oxidant activity and identification of major polyphenolics of the invasive weed Oxalis pes-caprae

Phytochemical Analysis : PCA
Ilknur GüçlütürkPanagiotis Kefalas

Abstract

Phytochemical analyses of weeds, many of which have been used in traditional medicine worldwide, could lead to the identification of secondary metabolites with significant biological activity. To perform an assessment of the chemical composition and exploitation potential of the invasive weed Oxalis pes-caprae. To evaluate the anti-oxidant activity of its extracts and isolate and characterise polyphenolic metabolites using LC-DAD-MS (ESI+) and NMR methods. Aerial parts of the invasive weed O. pes-caprae were extracted with solvents of increasing polarity and their major polyphenolic metabolites were identified by LC-DAD-MS (ESI+). The total phenolic content of the extracts was determined using the Folin-Ciocalteu method, while their anti-oxidant activity was evaluated on the basis of their ability to scavenge the stable free radical 1,1-diphenyl-2-picrylhydrazyl and hydrogen peroxide. The major polyphenolic constituents of the extracts were tentatively characterised as chlorogenic acid, quinic ferulate, luteolin glucoside and cernuoside according to their MS and UV spectroscopic data. Cernuoside, an aureusidin glucoside, was isolated from the methanolic extract of the weed's flowers and its structure was unambiguously identifie...Continue Reading

References

Dec 18, 2001·Journal of Agricultural and Food Chemistry·A ArnousP Kefalas
May 13, 2004·Journal of Ethnopharmacology·John R Stepp
Oct 10, 2007·Journal of Natural Products·Marina DellaGrecaArmando Zarrelli
Nov 28, 2008·Chemistry & Biodiversity·Marina DellagrecaArmando Zarrelli
Dec 17, 2008·The Journal of Nutritional Biochemistry·Anna ToldyZsolt Radák
Apr 9, 2009·Chemistry & Biodiversity·Marina DellaGrecaArmando Zarrelli
May 25, 2010·Natural Product Research·Marina DellaGrecaArmando Zarrelli

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Citations

Sep 5, 2013·Trends in Plant Science·Marta Pintó-Marijuan, Sergi Munné-Bosch
Sep 14, 2017·Natural Product Research·Qingwen HuHong-Xiang Lou
Jun 20, 2017·Natural Product Research·Marisa C GasparMaria G Campos
Aug 6, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Patrícia MáximoAna Lourenço
Jul 14, 2017·Phytochemistry·Benjamin BoucherleRomain Haudecoeur
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ioanna KostopoulouAnastasia Detsi

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