Navegando por Assunto "Chrysobalanaceae icaco"

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Acesso aberto (Open Access)
Caracterização farmacognóstica e avaliação antifúngica das folhas de Chrysobalanus icaco (Lin) em espécies de Candida
(Universidade Federal do Pará, 2012-09-12) PERES, Ana Regina Maués Noronha; MONTEIRO, Marta Chagas; http://lattes.cnpq.br/6710783324317390; ANDRADE, Marcieni Ataíde de; http://lattes.cnpq.br/8514584872100128
Currently, Candidiasis has stood out among fungal infections, due to its high incidence and mortality. In parallel, there is a greater record of microbial resistance and therapeutic failures presented by antifungals available. Chrysobalanus icaco Lin, a species native to the Amazon, has been popularly used in mycoses, without scientific evidence, so the importance of research to evaluate their antifungal properties. The analysis pharmacognostic of leaves of C. icaco indicated levels of loss on drying, total ash and ash insoluble 12.3% ± 0.0288, 4.31% ± 1.67% ± 0.0001 and 0.0012, respectively. Phytochemical screening of the hydroalcoholic extract of the leaves of C.icaco (EHCI) revealed the presence of organic acids, sugars, saponins, catechins, depsídeos, phenols, flavonoids, tannins, proteins, amino acids and purine. In HPLC analysis, it was dominated by the flavonoids, especially Myricetin. Antifungal activity was tested by microdilution opposite strain ATCC 40175 Candida albicans and eleven clinical isolates of oral Candida albicans, C. dubliniensis, C. parapsilosis and C. tropicalis. The MIC ranged from greater than 6.25 mg / mL to 1.5 mg / mL and CFM, when determined, was equal to or greater than 6.25 mg / mL. The EHCI showed moderate activity against the strain ATCC 40175 and the weak antifungal activity against clinical isolates mouth. These results open new perspectives for studies that investigate fractions and substances Chrysobalanus icaco with greater activity against Candida species.
Acesso aberto (Open Access)
Determination of myricetin derivatives in Chrysobalanus icaco L. (Chrysobalanaceae)
(2006-09) BARBOSA, Wagner Luiz Ramos; PERES, Amiraldo; GALLORI, Sandra; VINCIERI, Franco Francesco
The flavonoidic fraction composition of the hydroalcoholic extract of Chrysobalanus icaco L. (Chrysobalanaceae) leaves, which are largely used in the traditional medicine in Northern Brazil to control the glycaemia of diabetic patients, was characterised. Myricetin 3-O-glucuronide (miricitrin) and quercitrin, among other minor myricetin derivatives, were evidenced by HPLC/DAD and HPLC/MS analysis