| Full text | |
| Author(s): |
Rodrigues, Clenilson M.
;
Rinaldo, Daniel
;
Santos, Lourdes C. dos
;
Montoro, Paola
;
Piacente, Sonia
;
Pizza, Cosimo
;
Hiruma-Lima, Clélia A.
;
Brito, Alba R. M. Souza
;
Vilegas, Wagner
[9]
Total Authors: 9
|
| Document type: | Journal article |
| Source: | Rapid Communications in Mass Spectrometry; v. 21, n. 12, p. 1907-1914, June 2007. |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry |
| Abstract | |
Direct flow injection electrospray ionization ion trap tandem mass spectrometry (ESI-IT-MS/MS) was used to investigate the polyphenolic compounds present in an infusion from the barks of Hancornia speciosa Gom. (Apocynaceae), a native Brazilian plant popularly known as 'mangabeira', used as a source of nutrition and against gastric disorders. After a simple sample filtration pretreatment the characteristic fingerprint of the infusion was performed in negative ion ESI mode in a few minutes. At low capillary-voltage activation, the deprotonated molecules ([M-H]-) were observed and using collision-induced dissociation the product ion spectra showed the presence of a homologous series of B-type proanthocyanidins, as well as another series containing their respective C-glycosylated derivatives, with a degree of polymerization from 1 up to 6 units of interlinked catechins. Therefore, direct flow injection allowed us to identify the key compounds without preparative isolation of the components. (AU) | |
| FAPESP's process: | 02/05503-6 - Sustainable use of the Brazilian biodiversity: chemical and pharmacological prospection on higher plants |
| Grantee: | Wagner Vilegas |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |