Produção Nacional
Revisado por pares
On‐line identification of further flavone C ‐ and O ‐glycosides from sugarcane ( Saccharum officinarum L., Gramineae) by HPLC‐UV‐MS
2006; Wiley; Volume: 17; Issue: 5 Linguagem: Inglês
10.1002/pca.923
ISSN1099-1565
AutoresRenata Colombo, Janete H. Yariwake, Emerson Ferreira Queiroz, Karine Ndjoko, Kurt Hostettmann,
Tópico(s)Chromatography in Natural Products
ResumoAbstract HPLC‐UV‐MS (APCI‐MS/MS and CID/MS) was utilised for the identification of eight additional flavone glycosides from sugarcane ( Saccharum officinarum L., Gramineae) extracts of bagasse, leaves and juice (‘garapa’). Relevant information about substitution patterns was obtained through UV detection using post‐column addition of shift reagents, while tandem MS provided structural information confirming the proposed structures of the C ‐glycosides vitexin, orientin, luteolin‐8‐ C ‐(rhamnosylglucoside), 4′,5′‐dimethyl‐luteolin‐8‐ C ‐glycoside and the isomeric pair schaftoside–isoschaftoside, besides the O ‐glycosides tricin‐7‐ O ‐neohesperidoside and tricin‐7‐ O ‐glycoside. Copyright © 2006 John Wiley & Sons, Ltd.
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