Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
First evidence of hexameric and heptameric ellagitannins in plants detected by liquid chromatography/electrospray
 

Summary: First evidence of hexameric and heptameric ellagitannins
in plants detected by liquid chromatography/electrospray
ionisation mass spectrometry
Maarit Karonen1*, John Parker2
, Anurag Agrawal3
and Juha-Pekka Salminen1
1
Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, FI-20014 University of Turku, Finland
2
Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
3
Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
Received 21 June 2010; Revised 10 August 2010; Accepted 24 August 2010
Ellagitannins are bioactive plant polyphenols of which more than 500 individual compounds have
been identified from plants. An ellagitannin-rich fraction was isolated by Sephadex LH-20 from
Oenothera biennis (common evening primrose) leaves and roots and analysed by high-performance
liquid chromatography/diode-array detection coupled to high-resolution mass spectrometry with an
electrospray ionisation interface. The high-molecular mass ellagitannins were characterised by their
UV spectra, molecular masses and mass spectral fragments. In addition to the previously reported
dimers and trimers, an entire series of oligomeric ellagitannins from dimers to heptamers was

  

Source: Agrawal, Anurag - Department of Ecology and Evolutionary Biology & Entomollogy, Cornell University

 

Collections: Environmental Sciences and Ecology