Phytochemistry: structure of the blue cornflower pigment.
Nature
; 436(7052): 791, 2005 Aug 11.
Article
em En
| MEDLINE
| ID: mdl-16094358
ABSTRACT
The same anthocyanin pigment makes roses red but cornflowers blue, a phenomenon that has so far not been entirely explained. Here we describe the X-ray crystal structure of the cornflower pigment, which reveals that its blue colour arises from a complex of six molecules each of anthocyanin and flavone, with one ferric iron, one magnesium and two calcium ions. We believe that this tetrametal complex may represent a previously undiscovered type of supermolecular pigment.
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Bases de dados:
MEDLINE
Assunto principal:
Pigmentação
/
Centaurea
/
Flores
/
Antocianinas
Idioma:
En
Revista:
Nature
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Japão