Red Congo
Mostrando 13-24 de 219 artigos, teses e dissertações.
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13. Isolation and Identification of Cellulolytic Bacteria from the Gut of Three Phytophagus Insect Species
The cellulolytic bacteria from the gut of three different phytophagous insects were studied to isolate novel cellulolytic organism for biofuel industry. Among the threse, gut of P. quatuordecimpunctata larvae contained both highest no of total bacterial count (6.8x107CFU/gut) and cellulolytic bacteria (5.42x103CFU/gut). Fifteen different isolates were obtain
Braz. arch. biol. technol.. Publicado em: 2014-12
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14. Role of wild birds as carriers of multi-drug resistant Escherichia coli and Escherichia vulneris
Emergence and distribution of multi-drug resistant (MDR) bacteria in environments pose a risk to human and animal health. A total of 82 isolates of Escherichia spp. were recovered from cloacal swabs of migrating and non-migrating wild birds. All bacterial isolates were identified and characterized morphologically and biochemically. 72% and 50% of isolates re
Braz. J. Microbiol.. Publicado em: 2014-12
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15. Assessment of cellulolytic microorganisms in soils of Nevados Park, Colombia
A systematized survey was conducted to find soil-borne microbes that degrade cellulose in soils from unique ecosystems, such as the Superpáramo, Páramo, and the High Andean Forest in the Nevados National Natural Park (NNNP), Colombia. These high mountain ecosystems represent extreme environments, such as high levels of solar radiation, low atmospheric pres
Braz. J. Microbiol.. Publicado em: 2014-12
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16. Azo dye degradation by Phanerochaete chrysosporium in the medium enriched with nitrogen in the presence of primary co-substrate
This work sought to evaluate the ability of fungi Phanerochaete chryosporium to degrade congo red azo dye in batch reactor, evaluate the influence of glucose and wheat bran as co-substrates on the removal of the dye in the medium and investigate the influence of ammonium chloride, ammonium nitrate and ammonium sulfate as the inorganic nitrogen source for the
Braz. arch. biol. technol.. Publicado em: 2013-10
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17. Comparison of methods for the detection of biofilm formation by Staphylococcus aureus isolated from bovine subclinical mastitis
Biofilm formation is considered to be a selective advantage for Staphylococcus aureus mastitis isolates by facilitating bacterial persistence in the udder. It requires attachment to mammary epithelium, proliferation and accumulation of cells in multilayers. The objective of this study was to determine the sensitivity and specificity of three techniques for t
Braz. J. Microbiol.. Publicado em: 17/05/2013
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18. Effect of sub-minimum inhibitory concentrations of ciprofloxacin, amikacin and colistin on biofilm formation and virulence factors of Escherichia coli planktonic and biofilm forms isolated from human urine
The aim of this study was to determine the effect of subinhibitory concentrations (sub-MICs) of ciprofloxacin, amikacin and colistin on biofilm formation, motility, curli fimbriae formation by planktonic and biofilm cells of E. coli strains isolated from the urine of patients with various urinary system infections. Quantification of biofilm formation was car
Braz. J. Microbiol.. Publicado em: 2013
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19. Biofilm production by clinical Staphylococci strains from canine otitis
This study determined the species of 54 staphylococci isolates from canine otitis and their ability to produce biofilm through the Congo red agar method, confirmed by scanning electron microscopy. The most frequently identified species were S. intermedius and S. simulans. Results showed that 30% of the strains were biofilm producers.
Brazilian Journal of Microbiology. Publicado em: 2012-03
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20. Effect of dye structure and redox mediators on anaerobic azo and anthraquinone dye reduction
We investigated the biological decolourisation of dyes with different molecular structures. The kinetic constant values (k1) achieved with azo dye Reactive Red 120 were 7.6 and 10.1 times higher in the presence of RM (redox mediators) AQDS and riboflavin, respectively, than the assays lacking RM. The kinetic constant achieved with the azo dye Congo Red was 4
Química Nova. Publicado em: 2012
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21. Tratamento AnaerÃbio de Efluentes Contendo Corantes e Estudos de PÃs-Tratamento e Ecotoxicidade / Anaerobic Treatment of dye-containing Effluents and post-tratment and Toxicity Studies.
O descarte de efluentes tÃxteis em Ãguas superficiais representa um sÃrio problema ambiental e de saÃde pÃblica devido, principalmente, à presenÃa de corantes na sua composiÃÃo, muitos dos quais sÃo potencialmente tÃxicos e carcinogÃnicos. A remoÃÃo de cor e a mineralizaÃÃo de seus subprodutos à uma das maiores dificuldades enfrentadas pelas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
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22. Novos corantes vitais e instrumentos para cirurgia ocular
Objetivos: Este estudo contém cinco objetivos: 1. Realizar uma revisão atualizada do uso de corantes vitais em cirurgia ocular. 2. Apresentar os mecanismos de toxicidade retiniana por indocyanine green. 3. Avaliar a capacidade de novos corantes de tingir tecidos oculares. 4. Investigar a toxicidade retiniana de seis novos corantes em um modelo animal. 5. I
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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23. Atividade in vitro de agentes antimicrobianos contra biofilmes de Staphylococcus ssp. de otite canina / In vitro activity of antimicrobial agents against Staphylococcus ssp. biofilms from canine otitis
Historicamente, as bactÃrias foram vistas como organismos que vivem isolados, no entanto, Ã claro, agora, que a grande maioria de bactÃrias existe em comunidades complexas, conhecidas como biofilmes. As bactÃrias em biofilmes se encontram aderidas a superfÃcies diversas, tanto abiÃticas como biÃticas (dente, osso, mucosa), compondo um ecossistema alta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/01/2011
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24. Mycoremediation of Congo red dye by filamentous fungi
Azo, anthroquinone and triphenylmethane dyes are the major classes of synthetic colourants, which are difficult to degrade and have received considerable attention. Congo red, a diazo dye, is considered as a xenobiotic compound, and is recalcitrant to biodegradative processes. Nevertheless, during the last few years it has been demonstrated that several fung
Braz. J. Microbiol.. Publicado em: 2011-12