| Autor: |
Thomasi SS; Chemistry Department, Federal University of Lavras, Lavras, Brazil., de Benedicto DFC; Chemistry Department, Federal University of Lavras, Lavras, Brazil., da Conceição Alves T; Chemistry Departament, Federal University of São Carlos, São Carlos, Brazil., Bellete BS; Chemistry Department, Federal University of Lavras, Lavras, Brazil., Venâncio T; Chemistry Departament, Federal University of São Carlos, São Carlos, Brazil., de Andrade Mattietto R; Embrapa Amazônia Oriental, Belém, Brazil., Ferreira AG; Chemistry Departament, Federal University of São Carlos, São Carlos, Brazil. |
| Abstrakt: |
The techniques LC-UV-BPSU and LC-UV-SPE/NMR were applied for the first time in the analysis of açai berry ( Euterpe oleracea Mart.) pulp extracts. Those techniques allowed the identification of twenty-three metabolites: Valine (1), citric acid (2), tachioside (3), isotachioside (4), α -guaiacylglycerol (5), syringylglycerol (6), uridine (7), adenosine (8), dimethoxy-1,4-benzoquinone (9), koaburaside (10), protocatechuic acid (11), eurycorymboside B (12), 7',8'-dihydroxy-dihydrodehydroconiferyl alcohol-9- O - β-D -glucopyranoside (13), orientin (14), homoorientin (15), dihydrokaempferol-3-glucoside (16), isolariciresinol-9'- O-β-D -glucopyranoside (17), 5'-methoxyisolariciresinol-9'- O-β-D -glucopyranoside (18), cyanidin-3- O -glucoside (19), cyandin-3- O -rutenoside (20), 9,12-octadecadienoic acid (Z,Z)-2-hydroxy-1-(hydroxymethyl) ethyl ester (21), linolenic acid (22), and 1,2-di- O - α -linolenoyl-3- O-β-D -galactopyranosyl-sn-glycerol (23). In this plant, compounds 3, 4, 5, 6, 8, 10, 12, 17, 18, 21, and 23 are reported for the first time. All the structures were determined through extensive analyses of 1D and 2D NMR data, mass spectrometry, and comparison with published data. This methodology has proven to be an efficient alternative to the analysis of complex extracts containing a large variety of compounds. |
