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Thomasi, Sérgio Scherrer; de Benedicto, Danilo Forti C; da Conceição Alves, Thayana; Bellete, Bárbara Sayuri; Venâncio, Tiago; de Andrade Mattietto, Rafaella; Ferreira, Antonio Gilberto
Natural product research, 2024-Apr-13Journal Article
The techniques LC-UV-BPSU and LC-UV-SPE/NMR were applied for the first time in the analysis of açai berry ( Mart.) pulp extracts. Those techniques allowed the identification of twenty-three metabolites: Valine (1), citric acid (2), tachioside (3), isotachioside (4), -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- - -glucopyranoside (13), orientin (14), homoorientin (15), dihydrokaempferol-3-glucoside (16), isolariciresinol-9'- -glucopyranoside (17), 5'-methoxyisolariciresinol-9'- -glucopyranoside (18), cyanidin-3- -glucoside (19), cyandin-3- -rutenoside (20), 9,12-octadecadienoic acid (Z,Z)-2-hydroxy-1-(hydroxymethyl) ethyl ester (21), linolenic acid (22), and 1,2-di- - -linolenoyl-3- -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.
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