Detergents
Mostrando 13-24 de 618 artigos, teses e dissertações.
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13. Light-emitting diode effects on combined decellularization of tracheae. A novel approach to obtain biological scaffolds
PURPOSE: To obtain a decellularized tracheal scaffold associating traditional approaches with the novel light-emitting diode (LED) proposal.METHODS:This study was performed with New Zealand adult rabbits weighing 3.0 - 4.0 kg. Different protocols (22) were used combining physical (agitation and LED irradiation), chemical (SDS and Triton X-100 detergents), an
Acta Cir. Bras.. Publicado em: 2014-08
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14. An oxidant and organic solvent tolerant alkaline lipase by P. aeruginosa mutant: downstream processing and biochemical characterization
An extracellular alkaline lipase from Pseudomonas aeruginosa mutant has been purified to homogeneity using acetone precipitation followed by anion exchange and gel filtration chromatography and resulted in 27-fold purification with 19.6% final recovery. SDS-PAGE study suggested that the purified lipase has an apparent molecular mass of 67 kDa. The optimum te
Braz. J. Microbiol.. Publicado em: 2013-12
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15. Optimization and characterization of alkaline protease and carboxymethyl-cellulase produced by Bacillus pumillus grown on Ficus nitida wastes
The potentiality of 23 bacterial isolates to produce alkaline protease and carboxymethyl-cellulase (CMCase) on Ficus nitida wastes was investigated. Bacillus pumillus ATCC7061 was selected as the most potent bacterial strain for the production of both enzymes. It was found that the optimum production of protease and CMCase were recorded at 30 °C, 5% Ficus n
Braz. J. Microbiol.. Publicado em: 30/08/2013
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16. Reduction of Aeromonas hidrophyla biofilm on stainless stell surface by essential oils
This study demonstrates the possibility of using sanitizing detergents based on natural products for the elimination and/or reduction of Aeromonas hydrophila biofilm formed on stainless steel surfaces. The goal of this work was to determine the reduction effect of sanitizing detergents containing essential oils of Thymus vulgaris (thyme) and Cymbopogon citra
Braz. J. Microbiol.. Publicado em: 05/04/2013
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17. Elephant grass clones for silage production
Ensiling warm-season grasses often requires wilting due to their high moisture content, and the presence of low-soluble sugars in these grasses usually demands the use of additives during the ensiling process. This study evaluated the bromatological composition of the fodder and silage from five Pennisetum sp. clones (IPA HV 241, IPA/UFRPE Taiwan A-146 2.114
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-02
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18. Biossurfactantes: propriedades anticorrosivas, antibiofilmes e antimicrobianas
Due to the importance of biofilms in the food industry, new products are being developed to enhance the efficiency of cleaning food-contact surfaces. Biosurfactants could be an alternative to synthetic products. The major advantages of biosurfactants over synthetic detergents are their low toxicity and highly biodegradable nature. Biosurfactants may also exh
Quím. Nova. Publicado em: 2013
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19. Immobilization of Bacillus megaterium MTCC 2444 by Ca-alginate entrapment method for enhanced alkaline protease production
Optimization of culture conditions and immobilization parameters for alkaline protease production was carried out by employing Bacillus megaterium MTCC2444. The partially purified enzyme was tested for its stability in the presence of oxidants, surfactants and commercial detergents. The optimum temperature, pH, incubation time and inoculum size were 55 ºC,
Brazilian Archives of Biology and Technology. Publicado em: 2012-02
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20. Estudo de membranas eritrocitárias resistentes a detergentes da série éter de polioxietileno (Brij)
A visão atual sobre membranas biológicas abarca descrições cada vez mais complexas devido, principalmente, à descoberta de novos papéis atribuídos aos lipídios e sua heterogeneidade. Em particular a associação de esfingolipídios e colesterol, acrescida de proteínas específicas, constitui a base da formação de domínios membranares conhecidos c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2011
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21. ProduÃÃo de Ãcido CÃtrico utilizando glicerol residual da produÃÃo de biodiesel como substrato / Production of citric acid using residual glycerol from biodiesel production as a substrate
Due to government financial incentives, which boost the production of biodiesel, there has been a large scale production of this fuel. However, this growth has proved to be exaggerated, rising a worrying factor: the destination of the glycerol excess from biodiesel production. Such concern is clearly shown to prove an important fact: for every ton of biodies
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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22. Partial characterization of cold active amylases and proteases of Streptomyces sp. from Antarctica
The aim of this study was to isolate novel enzyme-producing bacteria from vegetation samples from East Antarctica and also to characterize them genetically and biochemically in order to establish their phylogeny. The ability to grow at low temperature and to produce amylases and proteases cold-active was also tested. The results of the 16S rRNA gene sequence
Brazilian Journal of Microbiology. Publicado em: 2011-09
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23. Aplicações de cromatografia líquida de alta eficiência para o estudo de poluentes orgânicos emergentes
Emerging organic pollutants (EOP) include many environmental contaminants based on commercial products such as pharmaceuticals, personal care products, detergents, gasoline, polymers, etc. EOP may be candidates for future regulation as they offer potential risk to environmental and human health due to their continual entrance into the environment and to the
Química Nova. Publicado em: 2011
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24. Selection of biosurfactan/bioemulsifier-producing bacteria from hydrocarbon-contaminated soil
Petroleum-derived hydrocarbons are among the most persistent soil contaminants, and some hydrocarbon-degrading microorganisms can produce biosurfactants to increase bioavailability and degradation. The aim of this work was to identify biosurfactant-producing bacterial strains isolated from hydrocarbon-contaminated sites, and to evaluate their biosurfactant p
Brazilian Journal of Microbiology. Publicado em: 2010-10