Navegando por Autor "AMARANTE, Cristine Bastos do"

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Acesso aberto (Open Access)
Avaliação da composição mineral do chá da folha senescente de Montrichardia linifera (arruda) schott (araceae) por espectrometria de absorção atômica com chama (FAAS)
(2011) AMARANTE, Cristine Bastos do; SILVA, Jesiel Cardoso Furtado da; MÜLLER, Regina Celi Sarkis; MÜLLER, Adolfo Henrique
Levels of Ca, Mg, Fe, Zn, Cu and Mn were determinated by FAAS in the tea and dry matter from senescent leaf from Montrichardia linifera, plant used in folk medicine Amazon. The content of these metals that are transferred of the leaf to the infusions have presented significant reductions, however, the Mn values in the infusion may exceed the tolerable daily intake (11 mg) if consumption of this tea is greater than 1.0 L per day. So the tea of senescent leaves of M. linifera may be considered as a toxic beverage and thus its use is not advised.
Acesso aberto (Open Access)
Caracterização física, química e nutricional dos frutos da Aninga
(2011-06) AMARANTE, Cristine Bastos do; SOLANO, Flávio Alípio Rodrigues; LINS, Alba Lucia Ferreira de Almeida; MÜLLER, Adolfo Henrique; MÜLLER, Regina Celi Sarkis
Montrichardia linifera, commonly known as aninga, belongs to the family Araceae and forms large populations on the banks of rivers and streams of the Amazon, especially in white water (muddy). Its fruit are part of the diet of fish, turtles and large herbivores, such as manatees and buffalo, thus they can be used in animal nutrition. However, despite its wide distribution in the Amazon landscape, there are no published data on the nutritional composition of this fruit. To assess its nutritional potential and to contribute to the knowledge of this species, this work aimed to carry out its physical, chemical, and nutritional characterization. Infructescence on average weighs 500 g with a set of about 80 fruits. Its nutritional value consists basically in its energy value (≅ 350 kcal), due mainly to the carbohydrate content (≅ 80%), presenting low protein value (< 0.5%). Manganese concentrations (≅ 1.800 mg kg-1) were considered toxic, far exceeding the maximum tolerable in nutrition of buffaloes (1.000 mg kg-1).
Acesso aberto (Open Access)
Composição química e valor nutricional para grandes herbívoros das folhas e frutos de Aninga (Montrichardia linifera, Araceae)
(Instituto Nacional de Pesquisas da Amazônia, 2010-12) AMARANTE, Cristine Bastos do; MÜLLER, Regina Celi Sarkis; DANTAS, Kelly das Graças Fernandes; ALVES, Claudio Nahum; MÜLLER, Adolfo Henrique; PALHETA, Dulcidéia da Conceição
The aninga (Montrichardia linifera, Araceae) is often found in the floodplain ecosystems of the Amazon and is the natural diet of animals such as manatees, turtles, fish, buffalo and cattle. Aiming to contribute to the chemical knowledge and nutritional value of this plant, leaves and fruits of M. linifera were collected on the banks of the Guama and Maratauira rivers, Para State, Brazil. We determined the moisture content, ash mineral composition, lipids, protein, fiber, carbohydrate and caloric value of the fruits and leaves. The mineral composition (Ca, Mg, Cu, Fe, Zn and Mn) was obtained by flame atomic absorption spectrometry. The leaves and the fruits of M. linifera had caloric values of 289.75 kcal and 355.12 kcal, respectively; and a low protein concentration, 0.44% for leaves and 0.24% for fruits. Manganese concentrations were 3279.46 mg kg-1 for leaves and 18151.53 mg kg-1 for fruits. These Mn concentrations are considered toxic, as they exceed the maximum tolerable for the ruminants (1000 mg kg-1). The M. linifera has the capacity to absorb and bioaccumulate large amounts of Ca, Mg and Mn in the soil, which makes it inappropriate for exclusive use as food for turtles, cattle and buffaloes, requiring more studies for its application as part of the diet.
Acesso aberto (Open Access)
Estruturas secretoras da lâmina foliar de amapá amargo (Parahancornia fasciculata, Apocynaceae): histoquímica e doseamento de flavonoides
(Instituto Nacional de Pesquisas da Amazônia, 2013-12) SANTOS, Ana Carla Feio dos; DIAS, Ana Cristina Andrade de Aguiar; AMARANTE, Cristine Bastos do; FERREIRA, Márlia Regina Coelho
Bitter amapa (Parahancornia fasciculata (Poir.) Benoist) produces a latex, which is presumed to have medicinal properties, as it is used in the treatment of malaria, lung problems, gastritis, and as healing agent. This study aimed to analyze structural and histochemically the sites of production and/or accumulation of biologically active compounds, as well as to determine the kind of flavonoids present in the leaf blade of bitter amapa. For structural and histochemical analysis we used standard protocols in plant anatomy. Whereas to assay flavonoids we used absorption spectrometry in the ultraviolet-visible region. The secretory system of bitter amapa leaves is constituted of both secretory idioblasts and branched laticifers. Histochemical tests revealed different types of chemical substances in the cell protoplast of idioblasts and laticifers. Pharmacological properties of bitter amapa latex can be attributed to two chemical compounds (flavonoids and alkaloids) found in this study, both of them are present in idioblasts and laticifers.
Acesso aberto (Open Access)
Estudo fitoquímico biomonitorado pelos ensaios de toxicidade frente à Artemia salina e de atividade antiplasmódica do caule de aninga (Montrichardia linifera)
(Instituto Nacional de Pesquisas da Amazônia, 2011) AMARANTE, Cristine Bastos do; MÜLLER, Adolfo Henrique; PÓVOA, Marinete Marins; DOLABELA, Maria Fâni
Montrichardia linifera is an aquatic plant widely use in Amazon folkmedicine. However, very little is known about the chemical composition and biological activity. In search of biologically active (s) substance (s) phytochemical bioassay-guided study was conducted evaluating hexane extract and ethanol extract obtained from stems of this species. Since only the ethanol extract presented toxicity against Artemia salina and activity against Plasmodium falciparum, this extract was selected for chromatographic fractionation. The biological activities were concentred in dichloromethane fraction which showed high toxicity against A. saline (LD50< μg mL-1) and high antiplasmodial activity (IC50 <10 μg mL-1), showing promising antimalarial activity. Of this fraction, the aromatic compound p-hydroxybenzaldehyde was isolated for the first time in this plant.