Phloroglucinol
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Cryopreservation of banana’s cv Grand Naine in vitro rhizomes
ABSTRACT The preservation of banana genetic material is usually performed through seedlings. However, most banana cultivars do not produce seed and are propagated vegetatively. Therefore, cryopreservation is a feasible technique that allows the preservation of banana genotypes indefinitely. For the success of cryopreservation protocols, the selection of cryo
An. Acad. Bras. Ciênc.. Publicado em: 23/10/2017
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2. Synergistic antifungal activity of the lipophilic fraction of Hypericum carinatum and fluconazole
ABSTRACT Hypericum species, Hypericaceae, are recognized as a source of therapeutical agents. Purified fractions and isolated compounds have been shown antimicrobial activity. As the indiscriminate use of antifungals and the increase of infections caused by emerging species are leading to the search of new alternative treatments, the aim of this study was to
Rev. bras. farmacogn.. Publicado em: 2017-02
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3. Uliginosin B, a natural phloroglucinol derivative with antidepressant-like activity, increases Na+,K+-ATPase activity in mice cerebral cortex
ABSTRACT Uliginosin B, a phloroglucinol isolated from Hypericum polyanthemum Klotzsch ex Reichardt, Hypericaceae, has antidepressant-like effect in the forced swimming test in rodents and inhibits monoamines neuronal reuptake without binding to their neuronal carriers. Studies showed the involvement of Na+,K+-ATPase brain activity in depressive disorders, as
Rev. bras. farmacogn.. Publicado em: 2016-10
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4. G-protein activation revealed by [35S]-GTPγS binding assay is involved on the antidepressant-like effect of Hyperi cum caprifoliatum and Hypericum polyanthemumcyclohexane extracts
AbstractPrevious studies by us demonstrated the antidepressant-like and antinociceptive effects of lipophilic extracts and dimeric acyl-phloroglucinols from species of the genus Hypericum native to Southern Brazil. Uliginosin B and HC1 (an enriched phloroglucinol fraction from Hypericum caprifoliatum) are able to inhibit monoamine synaptosomal uptake without
Rev. bras. farmacogn.. Publicado em: 2015-08
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5. Antiproliferative activity of the hexanic extract and phloroglucinols from Hypericum brasiliense
Natural products are regarded as major and important sources of molecules used in chemotherapy. Hypericum brasiliense Choisy, Hypericaceae, is an annual bush, native in the southern and southeastern Brazil. This species has been used in Brazilian folk medicine the anti-spasmodic and for the treatment of infectious diseases. H. brasiliense is chemically compo
Rev. bras. farmacogn.. Publicado em: 2013-10
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6. An enhanced electrochemical sensing platform integrated with graphene oxide and iron hydroxide colloid for sensitive determination of phloroglucinol
Uma nova plataforma de sensoriamento eletroquímico foi fabricada com nanohíbrido consistindo de óxido de grafeno e hidróxido de ferro coloidal. Devido à elevada área superficial e à excelente condutividade elétrica do nanohíbrido, o sensor eletroquímico preparado exibiu atividade eletrocatalítica proeminente na oxidação do floroglucinol, resulta
J. Braz. Chem. Soc.. Publicado em: 2013-04
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7. Isolamento e avaliação biológica de compostos fenólicos de espécies de hypericum nativas do sul do Brasil
The pharmacological effects of some Hypericum species are worldwide recognized, mostly by the comproved efficacy of H. perforatum as antidepressant. The south Brazilian species have been showing promissing results. Hypericum polyanthemum and H. caprifoliatum presented antinociceptive effect, while an antidepressant-like activity of H. caprifoliatum was repor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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8. Análise química e taxonômica de espécies de hypericum e avaliação da atividade antiangiogênica / Chemical and taxonomic analysis of Hypericum species and antiangiogenic activity
A comercialização de fitoterápicos obtidos a partir de extratos de H. perforatum para o tratamento de depressão em diversas partes do mundo despertou o interesse de investigadores no estudo de plantas do gênero Hypericum, tanto acerca da composição química quanto das propriedades biológicas destas espécies. Objetivos: Investigar a constituição qu
Publicado em: 2007
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9. Catabolism of Phloroglucinol by the Rumen Anaerobe Coprococcus
A rumen isolate, Coprococcus, sp. Pe15, was found to carry phloroglucinol reductase, which catalyzed the initial step in the breakdown of phloroglucinol. The organism uses phloroglucinol as the sole source of carbon and energy when grown in the absence of oxygen. Induced levels of enzyme were detected in cells grown either on phloroglucinol or on other carbo
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10. Use of the Hungate anaerobic technique in the isolation of phloroglucinol-negative mutants of Coprococcus species.
The Hungate anaerobic technique was used with a standard procedure for bacterial mutagenesis employing N-methyl-N-nitro-N'-nitrosoguanidine to obtain mutants of an obligate anaerobe. Three mutant strains were derived from a Coprococcus sp., strain Pe15, a rumen anaerobe capable of growing on phloroglucinol. The mutants did not grow on phloroglucinol but did
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11. Metabolism of gallate and phloroglucinol in Eubacterium oxidoreducens via 3-hydroxy-5-oxohexanoate.
The pathway for the anaerobic catabolism of gallic acid by Eubacterium oxidoreducans was studied by using both in vivo and cell-free systems. Cells grown with gallate and crotonate, but with no formate or H2, excreted pyrogallol and phloroglucinol into the medium. Gallate was decarboxylated by crude cell extracts, with pyrogallol as the only detectable produ
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12. Pyrogallol-to-phloroglucinol conversion and other hydroxyl-transfer reactions catalyzed by cell extracts of Pelobacter acidigallici.
Permeabilized cells and cell extracts of Pelobacter acidigallici catalyzed the conversion of pyrogallol (1,2,3-trihydroxybenzene) to phloroglucinol (1,3,5-trihydroxybenzene) in the presence of 1,2,3,5-tetrahydroxybenzene. Pyrogallol consumption by resting cells stopped after lysis by French press or mild detergent (cetyltrimethylammonium bromide [CTAB]) trea