Identification and quantification of glycoside flavonoids in the energy crop Albizia julibrissin

Ching S Lau; Danielle J Carrier; Robert R Beitle; David I Bransby; Luke R Howard; Jackson O Lay Jr; Rohana Liyanage; Edgar C Clausen

doi:10.1016/j.biortech.2005.12.011

Identification and quantification of glycoside flavonoids in the energy crop Albizia julibrissin

Bioresour Technol. 2007 Jan;98(2):429-35. doi: 10.1016/j.biortech.2005.12.011. Epub 2006 Feb 14.

Authors

Ching S Lau¹, Danielle J Carrier, Robert R Beitle, David I Bransby, Luke R Howard, Jackson O Lay Jr, Rohana Liyanage, Edgar C Clausen

Affiliation

¹ Department of Chemical Engineering, University of Arkansas, 3202 Bell Engineering Center, Fayetteville, AR 72701, USA.

PMID: 16481160
DOI: 10.1016/j.biortech.2005.12.011

Abstract

Oxygen radical absorbance capacity (ORAC) values showed that methanolic extracts of Albizia julibrissin foliage displayed antioxidant activity. High performance liquid chromatography (HPLC) and mass spectrometry (MS) techniques were utilized in the identification of the compounds. The analysis confirmed the presence of three compounds in A. julibrissin foliage methanolic extract: an unknown quercetin derivative with mass of 610 Da, hyperoside (quercetin-3-O-galactoside), and quercitrin (quercetin-3-O-rhamnoside). Fast performance liquid chromatography (FPLC) was employed to fractionate the crude A. julibrissin foliage methanolic extract into its individual flavonoid components. The flavonoids were quantified in terms of mass and their respective contribution to the overall ORAC value. Quercetin glycosides accounted for 2.0% of total foliage.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Albizzia / chemistry*
Conservation of Energy Resources
Flavonoids / chemistry*
Glycosides / chemistry*
Plant Leaves

Substances

Flavonoids
Glycosides