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Browsing by Author "Oliveira, Isabela Silva de"

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  • Jatoba (Hymenaea courbaril L.) Pod Residue: A Source of Phenolic Compounds as Valuable Biomolecules
    Publication . Del Angelo, Gabriela Lucca; Oliveira, Isabela Silva de; Albuquerque, Bianca R.; Kagueyama, Samanta Shiraishi; Silva, Tamires Barlati Vieira; Santos Filho, José Rivaldo dos; Dias, Maria Inês; Pereira, Carla; Calhelha, Ricardo C.; Alves, Maria José; Ferrari, Ariana; Yamaguchi, Natalia Ueda; Zielinski, Acacio A.F.; Bracht, Adelar; Peralta, Rosane M.; Corrêa, Rúbia C.G.
    This study aimed at investigating the chemical composition and a selected group of bioactivities of jatoba (Hymenaea courbaril L.) pod residue. An aqueous extract (deionized water; AE) and a hydroethanolic extract (ethanol: deionized water, 70:30 v/v; ETOH) were obtained via maceration. Ten phenolic compounds were characterized via LC-DAD-ESI/MSn: seven procyanidins, two quercetin derivatives and one taxifolin derivative, with dimers and trimers of procyanidins being the main components of both extracts. Total phenolic compound levels of 2.42 ± 0.06 and 11 ± 1 mg/g were found in AE and ETOH, respectively; however, only seven compounds were identified in ETOH. The jatoba pod residue extracts showed notable antioxidant activities: ETOH had greater antioxidant potential in the OxHLIA and DPPH assays (IC50 = 25.4 μg/mL and 0.71 μg/mL, respectively); however, EA demonstrated greater potential in the FRAP system (IC50 = 2001.0 μM TE/mg). Only AE showed antiproliferative potential, being effective against cell lines of gastric (GI50 = 35 ± 1 μg/mL) and breast (GI50 = 89 ± 4 μg/mL) adenocarcinomas. Likewise, only AE showed modest anti-inflammatory potential (IC50 = 225 ± 2 μg/mL) in mouse macrophages. Bacteriostatic effects against bacteria were exerted by both extracts. Enterococcus faecalis and Listeria monocytogenes (MICs = 2.5 mg/mL) were especially sensitive to the ETOH extract. Taken together, the results suggest potential for jatoba pod residue as a source of molecules with biological activities and with possible industrial applications.
    2024Journal article Open access Show more