Anthocyanin trisaccharides in blue berries of Vaccinium padifolium

• Autor(es): Cabrita, Luís ; Frøystein, Nils Åge ; Andersen, Øyvind M.
• Data: 2000
• Identificador Persistente: http://hdl.handle.net/10198/3204
• Origem: Biblioteca Digital do IPB
• Assunto(s): Anthocyanins; Vaccinium padifolium; Ericaceae; Berries; Chemotaxonomy
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

Delphinidin 3-O-alfa-rhamnoside, malvidin 3-O-(6''-O-alfa-rhamnopyranosyl-beta-glucopyranoside) and the 3-O-(6''-O-alfa-rhamnopyranosyl-2''-O-beta-xylopyranosyl-beta-glucopyranosides) of cyanidin, petunidin and peonidin were isolated by various chromatographic techniques from the edible berries of Vaccinium padifolium. Their complete structures were elucidated mainly by one- and two-dimensional nuclear magnetic resonance spectroscopy. Together they account for 7% of the anthocyanin content in this species. No anthocyanidin 3-triglycoside, 3-rutinoside or 3-rhamnoside had previously been found in the genus Vaccinium. The 3-O-(6''-O-alfa- rhamnopyranosyl-2''-O-beta-xylopyranosyl-beta-glucopyranosides) of petunidin and peonidin are novel compounds.