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| RODRIGUES,Adeline Conceição; OLIVEIRA,Brígida D’Ávila de; SILVA,Elis Regina da; SACRAMENTO,Nayara Thais Barbosa; BERTOLDI,Michele Corrêa; PINTO,Uelinton Manoel. |
| Abstract The aim of this study was to assess the anti-quorum sensing activity of phenolic extracts from grumixama (Eugenia brasiliensis), also known as Brazilian cherry, in concentrations that did not interfere with bacterial growth. The pulp phenolic compounds were extracted by using solid phage extraction in a mini-collumn C18 and quantified by spectrophotometry. The anti-quorum sensing activity was evaluated by testing the inhibition of violacein production in Chromobacterium violaceum and by evaluating the swarming motility in Aeromonas hydrophila and Serratia marcescens, both phenotypes regulated by quorum sensing. The phenolic extract strongly inhibited the production of violacein in C. violaceum, reducing its production in comparison with a control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quorum sensing; Anti-quorum sensing; Phenolic extract; Brazilian cherry; Eugenia brasiliensis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000200337 |
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| Muñoz Cazares, Naybi Rosario. |
| La comunicación bacteriana o censado de quórum, es un proceso de expresión de genes a nivel poblacional, dependiente de la densidad bacteriana y mediado por moléculas llamadas autoinductoras, que regula entre otros fenotipos, la expresión de los factores de virulencia. La inhibición del sistema de censado de quórum (I-SCQ), se considera un nuevo blanco, con mecanismo de acción distinto al de los antibióticos. El objetivo de este proyecto, consistió en realizar un estudio biodirigido de la actividad I-SCQ de las cortezas de Amphypterygium adstringens, Ceiba pentandra y Ceiba aesculifolia, empleando el modelo de inhibición de violaceína en Chromobacterium violaceum. Los resultados obtenidos, indican la presencia de fracciones activas para las tres cortezas,... |
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Palavras-chave: Comunicación bacteriana; Censado de quórum bacteriano; Amphipterygium adstringens; Ceiba aesculifolia; Ceiba pentandra; Anti-censado de quórum; Plantas anti-quórum; Bacterial communication; Quorum sensing; Anti-quorum sensing; Anti-quorum plants; Botánica; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2081 |
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