Activity Branches
Mostrando 13-24 de 196 artigos, teses e dissertações.
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13. Aspidosperma (Apocynaceae) plant cytotoxicity and activity towards malaria parasites. Part I: Aspidosperma nitidum (Benth) used as a remedy to treat fever and malaria in the Amazon
Infusions of Aspidosperma nitidum (Apocynaceae) wood bark are used to treat fever and malaria in the Amazon Region. Several species of this family are known to possess indole alkaloids and other classes of secondary metabolites, whereas terpenoids, an inositol and the indole alkaloids harmane-3 acid and braznitidumine have been described in A. nitidum . In t
Mem. Inst. Oswaldo Cruz. Publicado em: 06/12/2013
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14. Drimanes from Drimys brasiliensis with leishmanicidal and antimalarial activity
This paper evaluates CHCl3 and CH3OH extracts of the stem bark, branches and leaves of Drimys brasiliensis and drimane sesquiterpenes isolated from the stem bark against strains of Leishmania amazonensis and Leishmania braziliensis promastigotes and Plasmodium falciparum trophozoites. All of the extracts and compounds were tested in cell lines in comparison
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-04
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15. Constituintes químicos e avaliação da atividade antibacteriana de Macroptilium lathyroides (L.) Urb. (Fabaceae)
The chemical investigation of the stems and branches of Macroptilium lathyroides led to the isolation of a mixture of β-sitosterol and stigmasterol. The extracts from the roots allowed the isolation of lasiodiplodin, a mixture of stigmast-4-en-6β-ol-3-one and stigmast-4,22-dien-6β-ol-3-one, de-O-methyllasiodiplodin, genistein and lupinalbin A. The structu
Quím. Nova. Publicado em: 2013
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16. Diterpenes from marine brown alga Dictyota guineensis (Dictyotaceae, Phaeophyceae)
The crude extract of the marine brown alga Dictyota guineensis was analyzed by high-resolution gas chromatography-mass spectrometry (HRGC-MS). Five diterpenes were identified: dictyol E (the most abundant diterpene), dictyotadiol, dictyoxide, isopachydictyol A and pachydictyol A, all diterpenes from the chemical group I, i.e., mainly prenylated derivatives o
Revista Brasileira de Farmacognosia. Publicado em: 29/05/2012
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17. Evaluation of larvicidal activity of the methanolic extracts of Piper alatabaccum branches and P. tuberculatum leaves and compounds isolated against Anopheles darlingi
Piper is a notable genus among Piperaceae due to their secondary metabolites such as lignans, amides, esters and long chain fatty acids used as anti-herbivore defenses with comparable effects of pyrethroids, that holds a promise in insect control, including malaria vectors such as Anopheles darlingi, the main vector in the North of Brazil. Methanolic extract
Rev. bras. farmacogn.. Publicado em: 03/04/2012
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18. Triterpenes from Minquartia guianensis (Olacaceae) and in vitro antimalarial activity
Minquartia guianensis, popularly known as acariquara, was phytochemically investigated. The following triterpenes were isolated from the dichloromethane extract of leaves: lupen-3-one (1), taraxer-3-one (2) and oleanolic acid (3). The dichloromethane extract of branches yielded the triterpene 3β-methoxy-lup-20(29)-ene (4). The chemical structures were chara
Quím. Nova. Publicado em: 2012
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19. Estudo fitoquímico e avaliação da atividade anti-inflamatória de Aeschynomene fluminensis vell. (Fabaceae)
Phytochemical investigation of Aeschynomene fluminensis leaves and branches led to isolation of the flavonoid glycosides kaempferol 3,7-di-O-α-L-rhamnopyranoside, kaempferol 7-O-α-L-rhamnopyranoside, kaempferol 3-O-apiofuranosil-7-O- rhamnopyranoside, quercitin 3-O-α-L-rhamnopyranoside, quercitin 3-O-arabinofuranoside, 8-β-D-glucopyranosyl 4',5,7-trihydr
Quím. Nova. Publicado em: 2012
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20. Chemical constituents from branches of Maytenus gonoclada (Celastraceae) and evaluation of antimicrobial activity
Seis triterpenos pentacíclicos isolados dos galhos de Maytenus gonoclada (Celastraceae), incluindo todos os dados de RMN do novo composto 3-oxo-12α,29-diidroxifriedelano são aqui relatados. A estereoquímica do novo friedelano foi estabelecida por dados de RMN bidimensional (HSQC, HMBC e NOESY), e sua massa molecular confirmada por espectrometria de massa
Journal of the Brazilian Chemical Society. Publicado em: 2011-05
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21. Antioxidant capacity and larvicidal activity of essential oil and extracts from Lippia grandis
The leaves and thin branches of Lippia grandis Schauer, Verbenaceae, are used for flavoring of food in the Brazilian Amazon, as substitute for oregano. In this study the constituents of the essential oil were identified and the antioxidant capacity and larvicidal activity of the oil and methanol extract and its sub-fractions were evaluated. A sensory evaluat
Revista Brasileira de Farmacognosia. Publicado em: 04/02/2011
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22. Material particulado fino presente no ar da cidade de São Paulo promove alterações nas células de Purkinje: um estudo experimental em embrião de galinha / Urban fine particles induce alterations in Purkinje cells: an experimental study in chick embryo
Air pollutants are associated to several diseases including those related to central nervous system. The aim of this work was to evaluate the effect of urban fine particles (PM2.5) in chicken embryo Purkinje cells. A single dose of PM2.5 suspension in two different concentrations (1.5 or 20.0 Pg.100Pl-1) was injected in fresh laid fertilized eggs on E0. Cont
Publicado em: 2011
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23. A mineraÃÃo de agregados na regiÃo metropolitana de Fortaleza: impactos ambientais e conflitos de uso e ocupaÃÃo do solo / The mining of aggregates in the metropolitan region of Fortaleza: environmental impacts and use conflicts and land use
The Metropolitan Area of Fortaleza has great potential natural and economic for the development of mining of aggregates. Diversity of lithology ensures good supply of material for immediate use in civil construction and economic growth associated pent-up demand by building housing and also the deficiencies, of urban structure form the scenery favorable to ex
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2010
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24. Mathematical model for timber decay in contact with the ground adjusted for the state of São Paulo, Brazil
At this moment, the environmental sustainability has been incorporated to all branches of activity more and more; timber seems to be the best alternative in civil construction. Nevertheless, for a correct and better usage of timber as a structural material, it is necessary to have a higher degree of knowledge not only of the structural mechanical behavior, b
Materials Research. Publicado em: 2010-06