Navegando por Autor "RIBEIRO, Jeane Francisca Alves"

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Acesso aberto (Open Access)
Caracterização físico-química e análises por espectrofotometria e cromatografia de Peperomia pellucida L. (H. B. K.)
(2013) SILVA, Rosali Maria Ferreira da; RIBEIRO, Jeane Francisca Alves; FREITAS, Manolo Cleiton Costa de; ARRUDA, Mara Silvia Pinheiro; NASCIMENTO, M.N.; BARBOSA, Wagner Luiz Ramos; ROLIM NETO, Pedro José
The aim of this study was the physical chemical characterization of the powder and the tincture, and the chromatographic and spectrophotometric analysis of the Peperomiapellucida L. (H. B. K.) dry extract. The methodology followed the Farmacopeia Brasileira IV ed., except for the chemical prospection, the chromatographic profile obtained and the spectrophotometry of the dry extract, and determination of dried residues. The chemical prospection revealed the presence of foaming saponins; reducing sugars; proteins and amino acids; phenols; tannins; flavonoids; steroids and triterpenoids; depsideos and depsidones. The best profile from TLC for flavonoidic fraction was obtained with methanol/formic acid (90:10 v/v). HPLC confirmed the presence of 3 ‘,4’,7-tri-methoxyflavone in the dry extract of the plant material. The results obtained in this work should contribute for the determination of specifications for a future monograph on Peperomia pellucida L. (H.B.K.)
Acesso aberto (Open Access)
Investigação fitoquímica biomonitorada da tintura 70% de Arrabidaea chica (Humb. & Bompl.) Verlot
(Universidade Federal do Pará, 2011) RIBEIRO, Jeane Francisca Alves; SILVA JÚNIOR, José Otávio Carréra; http://lattes.cnpq.br/4437885351749994; BARBOSA, Wagner Luiz Ramos; http://lattes.cnpq.br/1372405563294070
The Arrabidaea chica (H & B) Verlot, popularly known as Pariri or crajirú. Scandentia is a small shrub about 2.5 m high, occurring from southern Mexico to central Brazil, is common in the Amazon, where it is used by Indians for body painting.Popularly tea leaves is indicated for inflammation, anemia, intestinal cramps, regulate menstruation, diarrhea, among others. Recent studies have shown its antioxidant activity and wound healing in vivo and in vitro, and antifungal activity against Trichophyton mentagrophytes and trypanocidal effect. This paper aims to contribute to the validation of the claim of use and to standardize the form of employment A. chica herbal medicine as a resource, since it is in RENISUS. The ethanolic and aqueous extracts of the plant were investigated for their secondary metabolites. Parameters were determined for quality control of the plant drug, through grading, drying powder loss and total ash.Besides the chromatographic profiles obtained by TLC, CLV, LC-MS and LC - DAD. The plant meets the parameters of quality control in accordance with the literature. A CCD profile obtained with the eluent Hexane / Acetone / MeOH (67,5:27,5:5) and revealed with NP / PEG revealed a band with Rf = 0.17 with yellow fluorescence characteristic of flavonoids. In the profile of HPLC - DAD chromatograms were obtained with characteristics of quinones and flavonoids as well. From these results, the work was directed to the isolation, initially with the FAE by fractionation of CLV and analysis of resulting fractions by HPLC-DAD, and as a result suggested the presence of a flavonoid apigenin derivative of the flavonol. The microbiological results corroborate some of its popular uses thus contributing to validate the form of alleged use of the plant.