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| ZOLA,Flávia Guimarães; RODRIGUES,Adeline Conceição; OLIVEIRA,Brígida D’Ávila; SACRAMENTO,Nayara Thais Barbosa; TAYLOR,Jason Guy; PINTO,Uelinton Manoel; BERTOLDI,Michele Corrêa. |
| Abstract Phenolic compounds (PC) have presented antioxidant potential as well as antimicrobial action against several bacteria. This study aimed to extract PC from grumixama (Eugenia brasiliensis Lam.) pulp using solid phase extraction (SPE), then quantify the PC by Folin-Ciocalteu assay, and to evaluate the antioxidant activity (AA) from PC by DPPH, ABTS and FRAP methods as well as its antimicrobial activity by plate diffusion assay (PDA) and Minimal Inhibitory Concentration (MIC) assays. Additionally, the centesimal composition of the fruit and its mineral content by Total Reflection X-Ray Fluorescence Spectroscopy were determined. The fruit is a good source of PC which presented a higher contribution on AA from pulp than NPHRC. Calcium was the trace... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial activity; Brazilian cherry; Mineral composition; Phenolic compounds; Grumixama. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600378 |
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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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