Constituintes químicos de Bombacopsis glabra (bombacaceae)

Chemical study of three medicinal plants: from leaves of Piper renitens (Miq.) Yunck, Piperaceae, and Siparuna guianensis Aubl., Siparunaceae, and from flowers of Alternanthera brasiliana (L.) Kuntze, Amaranthaceae, resulted in isolation of nine compounds: three steroids, β-sitosterol, stigmasterol from P. renitens and sitosterol-3-O-β-D-glucopyranoside from A. brasiliana, the diterpene kaurane ent-kauran-16α,17-diol from P. renitens, two derivatives kaempferolmethylether, kumatakenine (kaempferol-3,7-dimethylether) and kaempferol-3,7,3'-trimethylether from S. guianensis and three flavones, crysoeriol (5,7,4'-trihydroxy-3'-methoxyflavone), tricin (5,7,4'-trihydroxy-3',5'-dimethoxyflavone) and 7-O-β-D-glucopyranoside-5,4'-dihydroxy-3'-methoxyflavone from A. brasiliana. Compounds structures were determinate using 1D and 2D 1 H NMR and 13 C spectral data, mass and IR spectra, comparing with literature data.

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“…On this basis the compound 5 was unambiguously identified as kaempferol-3,7,3'-trimethylether (Paula et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Chemical constituents from three medicinal plants: Piper renitens, Siparuna guianensis and Alternanthera brasiliana

Facundo¹,

Azevedo²,

Rodrigues³

et al. 2012

Rev. bras. farmacogn.

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“…In an effort to identify the compounds responsible for the anti-radical and antioxidant activities, the promising fractions (chloroform and ethyl acetate), proceeding from acetone and EtOH extracts of leaves of both species were separated by guided chromatographic fractionation into their main constituents (1-7) (Figure 1 (Sims & Pettus, 1976), taraxerol (2) (Nobuko et al, 1987), 3' ,5-dihydroxy-3,4' ,7-trimethoxyflavone (3) (Agrawal et al, 1989), 5-hydroxy-3,4' ,7-trimethoxyflavone (4) (Paula et al, 2006), quercetin (5) (Agrawal et al, 1989), tiliroside (6) (Kaouadji, 1990), and rutin (7) (Kazuma et al, 2003). Some these compounds (4-7) were also evaluated for their DPPH free radical scavenging and antioxidant activities and compared with standards used (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Determination of the phenolic content and antioxidant potential of crude extracts and isolated compounds from leaves ofCordia multispicataandTournefortia bicolor

Silva

Souza

Silva

et al. 2009

Pharmaceutical Biology

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“…a Pachira aquática aublet (família Bombacaceae), vulgarmente conhecida como munguba, castanheira-domaranhão, castanheira, cacau-selvagem, é uma árvore nativa do sul do México até o norte da américa do Sul, na área compreendida pela floresta amazônica, onde pode ser encontrada frequentemente em terrenos alagadiços e matas ciliares, entretanto, apresenta a característica de facilmente se adaptar às condições edáficas e climáticas diversas (Peixoto e escudeiro, 2002;Paula et al 2006).…”

Section: Introductionunclassified

Caracterização do óleo das sementes de Pachira aquatica Aublet para aproveitamento alimentar

Jorge¹,

Luzia

2012

Acta Amaz.

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RESUMOos frutos de Pachira aquatica aublet apresentam sementes comestíveis com características organolépticas muito apreciadas pelas populações amazônicas, sendo pouco utilizados em outras regiões. este trabalho teve como objetivo caracterizar as sementes quanto à composição centesimal e determinar as características físico-químicas e perfil de ácidos graxos. a determinação da composição centesimal das sementes (teores de umidade, lipídios, proteínas, cinzas e carboidratos) e análises do óleo extraído das mesmas (ácidos graxos livres, índices de peróxido, iodo, refração, saponificação, ponto de fusão e perfil de ácidos graxos) foram realizadas seguindo metodologia oficial. o teor de óleo nas sementes 38,39% demonstrou que estas têm potencial para aproveitamento industrial. Das características físico-químicas analisadas, o óleo extraído das sementes apresentou 39,2% de ácidos graxos livres (expresso em % ácido oleico), índice de iodo de 27,4 g i 2 .100 g -1 , índice de saponificação de 208,0 mg.KoH g -1 , índice de refração (40 °C) de 1,4569 e ponto de fusão de 41,9 °C. Quanto à composição de ácidos graxos do óleo predominaram os ácidos palmítico (44,93%), oleico (39,27%) e linoleico (11,35%). Tal fato favorece o uso deste óleo como matéria-prima para as indústrias alimentícia, farmacêutica e de cosméticos. PALAVRAS-CHAVE: ácidos graxos, frutos, medidas físico-químicas. Characterization of seed oil Pachira aquatica Aublet for food utilization ABSTRACTThe fruits of Pachira aquatica aublet present edible seeds with organoleptic characteristics much appreciated by peoples in the amazon, with little being used in other regions. This study aimed to characterize the seeds and to determine the composition and physicochemical characteristics and fatty acid profile. Determining the composition of the seeds (moisture, lipids, proteins, carbohydrates and ash) and analysis of oil extracted from them (free fatty acids, peroxide, iodine, refractive index, saponification value, melting point and fatty acid profile) was performed following the official methodology. The oil content in the seeds 38.39% showed that these have potential for industrial use. The physical and chemical analysis, the oil extracted from the seeds showed 39.2% of free fatty acids (% oleic acid), iodine value of 27.4 i 2 .100 g , refractive index (40 °C) of 1.4569 and melting point of 41.9 °C. regarding the composition of fatty acids palmitic predominated oil (44.93%), oleic (39.27%) and linoleic (11.35%). This fact favors the use of oil as raw material for the food, pharmaceutical and cosmetic industries.

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Constituintes químicos de Bombacopsis glabra (bombacaceae)

Cited by 18 publications

References 13 publications

Chemical constituents from three medicinal plants: Piper renitens, Siparuna guianensis and Alternanthera brasiliana

Chemical constituents from three medicinal plants: Piper renitens, Siparuna guianensis and Alternanthera brasiliana

Determination of the phenolic content and antioxidant potential of crude extracts and isolated compounds from leaves ofCordia multispicataandTournefortia bicolor

Caracterização do óleo das sementes de Pachira aquatica Aublet para aproveitamento alimentar

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