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- 저자 : Rosemeire (검색결과 3 건)
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Geisiany M. de Queiroz,Fla´vio A.S. Politi,Edvaˆnio R. Rodrigues,Tatiana M. Souza-Moreira,Raquel R.D. Moreira,Ca´ssia R.P. Cardoso,Lourdes C. Santos,Rosemeire C.L.R. Pietro 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.7
Equisetum hyemale species is considered a medicinal plant used in the form of infusions to combat infectious or inflammation diseases and also diuretic effects, presenting several compounds related to these actions. In previous studies different species of Equisetum showed several phenolic compounds. The objective of this study was, for the first time, based on phytochemistry analysis to evaluate the antioxidant and antimicrobial activity. The 70% ethanolic and methanolic extracts of E. hyemale were characterized by spectrophotometric and high-performance liquid chromatography with pulsed amperometric detector analyses, as well as its antioxidant potential based on the scavenger activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH). In addition was verified the antimicrobial activity by broth microdilution technique against bacteria and fungi. The extracts showed phytochemical similarity, which demonstrated the presence of phenolic compounds, the scavenging activity for free radicals was about 30% and was observed better antifungal activity against dermatophyte fungi, with minimum inhibitory concentration and minimum fungicidal concentration of 0.62 mg/mL to Trichophyton rubrum and Microsporum canis. The extracts exhibits great potential to therapeutic applications or product development, since both possess antifungal activity and antioxidant action associated with little difference in their phytochemical composition.
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Antidiarrheal Activity of Campomanesia xanthocarpa Fruit
Tatiana M. Souza-Moreira,Luiz Estêvão Salvagnini,Emerson Santos,Viviana Y.A. Silva,Raquel R.D. Moreira,Hérida R.N. Salgado,Rosemeire C.L.R. Pietro 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.5
The growing list of drug-resistant microorganisms and the persistence of deaths due to diarrhea are compelling reasons to study plants in search of new therapeutic agents. The chemical constitution and popular use of the edible fruits of Campomanesia xanthocarpa O. Berg motivated this study to assess the antimicrobial and antidiarrheal properties of the fruits. An extract in 70% ethanol was prepared, and its antimicrobial activity was tested against several strains of bacteria by the agar diffusion and microdilution methods. Antidiarrheal activity was analyzed by testing intestinal motility in an animal model. Preliminary phytochemical study indicated the presence of flavonoids, saponins, and tannins in the hydroalcoholic extract. Antimicrobial activity was significant, but the minimum inhibitory concentration proved to be higher than the maximum extract concentration tested. The extract did not show significant activity for intestinal motility. Although this fruit extract did not show great results as an antimicrobial or antidiarrheal agent, the study contributes to the search for new plant agents and could be referred to as a research protocol by investigators in this area.
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Chemical and Antidiarrheal Studies of Plinia cauliflora
Tatiana M. Souza-Moreira,Juliana A. Severi,Emerson Santos,Viviana Y.A. Silva,Wagner Vilegas,He´rida R.N. Salgado,Rosemeire C.L.R. Pietro 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.12
Plinia cauliflora (Mart.) Kausel, widespread in South America, has edible fruits, and its bark is commonly used against diarrhea and other disorders, on account of its astringency. Because diarrhea is still one of the most important causes of illness and death among children in developing countries, where the population turns to traditional medicine for its treatment, the present study determined the composition of fruit and leaf extracts of P. cauliflora, analyzed the activity against diarrhea by antimicrobial and gastrointestinal motility, and evaluated the cytotoxicity of the extracts. Chemical composition was determined by high-performance liquid chromatograpy–ultraviolet/photodiode array detection. Antimicrobial activity was analyzed by agar diffusion and the microdilution method against etiological agents of diarrhea. The effect on gastrointestinal motility was analyzed using an experimental model in mice. Cytotoxicity was evaluated in vitro with the fibroblast cell line SIRC CCL 60, and leaf extract showed a 50% inhibitory concentration of 0.48 lg/mL. Gallic acid, ellagic acid, and flavonoid derivatives were detected in the extracts. It was observed that fruit and leaf extracts showed some activity against Enterococcus faecalis, Escherichia coli, Salmonella sp., and Shigella sp. However, neither extract had any effect on gastrointestinal motility.
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