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| Neves,Michelline Viviane Marques das; Silva,Tânia Maria Sarmento da; Lima,Edeltrudes de Oliveira; Cunha,Emídio Vasconcelos Leitão da; Oliveira,Eduardo de Jesus. |
| Abstract A bioassay-guided fractionation of two samples of Brazilian red propolis (from Igarassu, PE, Brazil, hereinafter propolis 1 and 2) was conducted in order to determine the components responsible for its antimicrobial activity, especially against Candida spp. Samples of both the crude powdered resin and the crude ethanolic extract of propolis from both locations inhibited the growth of all 12 tested Candida strains, with a minimum inhibitory concentration of 256 µg/mL. The hexane, acetate and methanol fractions of propolis 1 also inhibited all strains with minimum inhibitory concentration values ranging from 128 to 512 µg/mL for the six bacteria tested and from 32 to 1024 µg/mL for the yeasts. Similarly, hexane and acetate fractions of propolis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioassay-guided fractionation; Red propolis; Isoflavone; Formononetin; Candida. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100159 |
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| Mendonça,Lucyana Santos de; Mendonça,Flávia Manuella Ribeiro de; Araújo,Yzila Liziane Farias Maia de; Araújo,Edilson Divino de; Ramalho,Suyare Araújo; Narain,Narendra; Jain,Sona; Orellana,Sara Cuadros; Padilha,Francine Ferreira; Cardoso,Juliana Cordeiro. |
| The aim of this study was to analyze the physicochemical properties and antifungal activities of the red propolis samples from Sergipe, Brazil, and also evaluate their variability throughout the year. The characterization of the hydroalcoholic extract (HPE) of the red propolis samples was performed monthly from October 2009 to September 2010. The concentrations of the bioactive compounds varied during the year, but their chromatographic profiles were similar. Four compounds were identified by comparison with authentic standards. Formononetin was one of the predominant compounds in all propolis extracts. In our study, it was observed that all the propolis samples inhibited the growth of Candida species. Multivariate analysis confirmed the variations in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flavonoids; Phenolic acids; Formononetin; Seasonality. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000200291 |
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| Salgado,Fabrício Henrique Moreira; Moreira,Fátima Maria de Sousa; Siqueira,José Oswaldo; Barbosa,Ricardo Henrique; Paulino,Helder Barbosa; Carneiro,Marco Aurélio Carbone. |
| ABSTRACT: The objective of this study was to evaluate the effects of inoculation with different arbuscular mycorrhizal fungi native to Cerrado, associated with the application of colonization stimulant (7-hydroxy, 4’-methoxy-isoflavone) at the initial growth of cotton and maize plants in a greenhouse. The experiment was carried out in a completely randomized design and 7x2 factorial scheme, with five species of arbuscular mycorrhizal fungi and combined inoculation (uniting all species in equal proportion) and native fungi, in the presence and absence of colonization stimulant in maize and cotton crops. Shoots dry matter (SDM), roots dry matter (RDM), mycorrhizal colonization and accumulation of calcium, zinc and phosphorus in the SDM were evaluated at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea may; Gossypium hirsutum L; Formononetin; Mycorrhiza. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600202 |
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