Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3833

Full Length Research Paper

A new acylated luteolin glycoside from Curcuma Longa L. and free radical scavenging potential of its extracts

Manal H. Shabana
  • Manal H. Shabana
  • Phytochemistry and Plant Systematic Department, National Research Center, EL-tahrir St. Dokki, Cairo, Egypt.
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Manal S. Afifi
  • Manal S. Afifi
  • Pharmaconosy Department, Faculty of Pharmacy, Misr International University, Cairo, Ismailia Road, Egypt.
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  •  Accepted: 26 November 2013
  •  Published: 03 January 2014

Abstract

The ethanol and water extracts of turmeric (Curcuma longa L.) displayed free radical scavenging activity. Chemical investigation of the ethanolic extract led to the isolation of a new acylated luteolin glucoside, luteolin-7-O-(6"-p-hydroxybenzoyl-b-D-glucopyranoside) (compound 1), together with the known flavonoids: luteolin 7-O-b-D-glucopyranoside (compound 2), apigenin-7-O-b-D-glucopyranoside (compound 3), luteolin (compound 4) and apigenin (compound 5) which were isolated for the first time from C. longa L. rhizomes, in addition to three diphenylheptanoids: curcumin (compound 6), demethoxycurcumin (compound 7) and bisdemethoxycurcumin (compound 8). The diphenylheptanoids have been previously reported for C. longa.

Key words: Curcuma longa L., polyphenols constituents, luteolin-7-O-(6"-p-hydroxybenzoyl-b-glucopyranoside).

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