| Texto completo | |
| Autor(es): |
Colombo, Renata
[1]
;
Yariwake, Janete H.
[1]
;
Queiroz, Emerson F.
[2]
;
Ndjoko, Karine
[2]
;
Hostettmann, Kurt
[2]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Geneva, Lab Pharmacognosie & Phytochim, Ecole Pharm Geneve Lausanne, CH-1211 Geneva 4 - Switzerland
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of the Brazilian Chemical Society; v. 20, n. 9, p. 1574-1579, 2009. |
| Citações Web of Science: | 12 |
| Resumo | |
This work describes the on-line characterization of minor flavones from sugarcane (Saccharum officinarum) juice by high-performance liquid chromatography coupled to diode array UV detection and mass spectrometry (LC/UV/MS) using atmospheric pressure chemical ionization-collision-induced dissociation (APCI-CID-MS/MS) and post-column derivatization using UV shift reagents. HPLC-UV analysis with shift reagents provided information about the substitution pattern in the flavonoid skeleton and, combined with MS data, these techniques allowed for the on-line identification of five "garapa" flavones: luteolin-8-C-glucosyl-7-O-glucuronide; tricin-7-O-neohesperoside-4'-O-rhamnoside; tricin-7-O-methylglucuronate-4'-O-rhamnoside; tricin-7-O-methylglucuronide; swertisin, while four other compounds were partially identified as glycosylflavones. Only swertisin (7-O-methylapigenin-6-C-glucoside) was reported previously in sugarcane molasses. (AU) | |
| Processo FAPESP: | 00/11645-2 - Analise cromatografica (hplc) dos flavonoides presentes na cana-de-acucar. |
| Beneficiário: | Renata Colombo |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 06/59457-6 - Estudo químico-analítico de plantas medicinais e alimentícias brasileiras por HPLC e SBSE/LC |
| Beneficiário: | Janete Harumi Yariwake |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |