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Xylitol inhibits J774A.1 macrophage adhesion in vitro BABT
Ferreira,Aline Siqueira; Souza,Maria Aparecida de; Raposo,Nádia Rezende Barbosa; Ferreira,Ana Paula; Silva,Silvio Silvério da.
The aim of this work was to evaluate the effect of xylitol on J774A.1 macrophage adhesion. Adhesion consisted of a three-hour interval, at room temperature, followed by washing and cell incubation at 37ºC/5% CO2/ 48h. Xylitol was used to treat the cells either before (for 24h) or after the cell incubation (for 48h) at 5% as final concentration in both the situations. It was found that xylitol was effective in preventing the adhesion in both the conditions in spite of the former being 100-fold greater and significant (p < 0.001). The results pointed to an important xylitol action on macrophage adhesion, which should be further investigated as an inflammatory control.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adhesion; J774A; 1 macrophages; Xylitol.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600017
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In vitro inhibition of Pseudomonas aeruginosa adhesion by Xylitol BABT
Sousa,Letícia Pinheiro de; Silva,Annelisa Farah da; Calil,Natalia Oliveira; Oliveira,Murilo Gomes; Silva,Silvio Silvério da; Raposo,Nádia Rezende Barbosa.
This study evaluated, in vitro, the antimicrobial activity and the anti-adherent property of xylitol (0.5, 2.5 and 5.0%, w/v) on two Pseudomonas aeruginosa strains (ATCC 9027 and clinical). The assay of antimicrobial activity was performed to determine a minimum inhibitory concentration (MIC) and the adhesion test was performed, by which the parameters regarding, growth in the culture medium, number of colony forming units (CFUs) released and slide evaluation by scanning electron microscopy (SEM) were analyzed. The Statistical Package for the Social Sciences (SPSS) was employed for statistical analysis. Results showed that xylitol had no antimicrobial activity on these strains; however, the inhibition of bacterial adherence was observed in microphotographs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial adhesion; Pseudomonas aeruginosa; Prevention and control; Xylitol.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500004
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Improvement of biotechnological xylitol production by glucose during cultive of Candida guilliermondii in sugarcane bagasse hydrolysate BABT
Silva,Débora Danielle Virgínio da; Mancilha,Ismael Maciel de; Silva,Silvio Silvério da; Felipe,Maria das Graças de Almeida.
The effect of glucose on xylose-to-xylitol bioconversion by Candida guilliermondii was examined by adding it to sugarcane bagasse hydrolysate medium to obtain different glucose:xylose ratios (1:25, 1:12, 1:5 and 1:2.5). Under experimental conditions, increasing glucose:xylose ratio improved the assimilation of the xylose present in the hydrolysate by yeast, resulting in biomass increase, and in the formation of xylitol and glycerol/ethanol by-products. Maximum values of xylitol yield (0.59 g g-1) and volumetric productivity (0.53 g l-1.h-1) were obtained with glucose:xylose ratio of 1:5, resulting in the higher conversion efficiency (64.3%).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Candida guilliermondii; Glucose; Sugarcane bagasse hydrolysate; Xylitol; Xylose.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200005
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New cultive medium for bioconversion of C5 fraction from sugarcane bagasse using rice bran extract BJM
Silva,Debora Danielle Virginio da; Cândido,Elisangela de Jesus; Arruda,Priscila Vaz de; Silva,Silvio Silvério da; Felipe,Maria das Graças de Almeida.
The use of hemicellulosic hydrolysates in bioprocesses requires supplementation as to ensure the best fermentative performance of microorganisms. However, in light of conflicting data in the literature, it is necessary to establish an inexpensive and applicable medium for the development of bioprocesses. This paper evaluates the fermentative performance of Scheffersomyces (Pichia) stipitis and Candida guilliermondii growth in sugarcane bagasse hemicellulosic hydrolysate supplemented with different nitrogen sources including rice bran extract, an important by-product of agroindustry and source of vitamins and amino acids. Experiments were carried out with hydrolysate supplemented with rice bran extract and (NH4)2SO4; peptone and yeast extract; (NH4)2SO4,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Candida guilliermondii; Hemicellulosic hydrolysate; Scheffersomyces stipitis; Rice bran extract; Sugarcane bagasse.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400043
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