Bioprocess
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. A ROBUST COMBINATORIAL APPROACH BASED ON P-GRAPH FOR SUPERSTRUCTURE GENERATION IN DOWNSTREAM BIOPROCESSES
Abstract In the production of chemicals from fermentation, the cost of downstream purification constitutes the major portion of the total production cost. Since the bioprocess generally contains a large amount of biochemical separation units, its flowsheets are complex. How to generate the rigorous superstructure of the downstream bioprocess is a primary pro
Braz. J. Chem. Eng.. Publicado em: 2015-03
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14. Biosorption of Mn (II), Co (II) and Cr (VI) in a horizontal rotating tubular bioreactor: experiments and evaluation of the integral bioprocess model
In this research, a multi heavy metals removal process with mixed microbial culture was examined in a horizontal rotating tubular bioreactor (HRTB) with different combinations of process parameters. Three metals were selected as examples of cations (manganese and cobalt) and oxy-anion (hexavalent chromium). Hydrodynamic conditions and biomass sorption capaci
Braz. J. Chem. Eng.. Publicado em: 2014-09
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15. Stability of immobilized Rhizomucor miehei lipase for the synthesis of pentyl octanoate in a continuous packed bed bioreactor
The enzymatic synthesis of organic compounds in continuous bioreactors is an efficient way to obtain industrially important chemicals. However, few works have focused on the study of the operational conditions and the bioprocess performance. In this work, the aliphatic ester pentyl octanoate was obtained by direct esterification using a continuous packed bed
Braz. J. Chem. Eng.. Publicado em: 2014-09
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16. Peptidase with Keratinolytic Activity Secreted by Aspergillus terreus During Solid-State Fermentation
The aim of this study was to evaluate peptidase production by Aspergillus terreus in solid-state bioprocess and evaluate its parameters. The best conditions were 5.0 g of wheat bran as substrate, incubation temperature 30°C, inoculum 2.0x105spores/g and 75% saline volume, with production reaching 677 U/mL (5400 U/g culture medium) after 72 h of fermentation
Braz. arch. biol. technol.. Publicado em: 2014-08
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17. Extracellular methionine amino peptidase (MAP) production by Streptomyces gedanensis in solid-state fermentation
A bioprocess was developed for extracellular MAP production from Streptomyces gedanensis by solid-state fermentation. Response surface methodology of Box Behken Design was performed to evaluate the interaction effects of most significant variables {inoculum size, (NH4)2SO4 concentration, MgSO4.7H2O and tryptone) on MAP production after the single parameter o
Braz. arch. biol. technol.. Publicado em: 2014-04
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18. Influence of multiple bioprocess parameters on production of lipase from Pseudomonas sp. BWS-5
The aim of the present work was to study the influence of multiple bioprocess parameters for the maximum production of lipase from Pseudomonas sp. BWS-5. The culture reached the stationary phase of growth after 36h of incubation when the maximum lipase production was obtained at flask level. The different media components such as carbon sources, nitrogen sou
Braz. arch. biol. technol.. Publicado em: 2013-10
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19. Hexavalent chromium reduction by immobilized cells of Bacillus sphaericus AND 303
Bacillus sphaericus AND 303, a Cr(VI)-resistant and reducing bacterium reported from serpentine outcrops of Andaman was evaluated for Cr(VI) reduction using immobilized cells under batch culture. Screening of inert matrices for entrapment of whole cells indicated that polyvinyl alchohol-alginate was the most effective one reducing 87.5% of 20 µM Cr(VI) in 2
Braz. arch. biol. technol.. Publicado em: 2013-06
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20. Modeling of an industrial process of pleuromutilin fermentation using feed-forward neural networks
This work investigates the use of artificial neural networks in modeling an industrial fermentation process of Pleuromutilin produced by Pleurotus mutilus in a fed-batch mode. Three feed-forward neural network models characterized by a similar structure (five neurons in the input layer, one hidden layer and one neuron in the output layer) are constructed and
Braz. J. Chem. Eng.. Publicado em: 2013-03
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21. Desenvolvimento de um bioprocesso para expansão de células mesenquimais estromais multipotentes em microcarregadores / Bioprocess development for expansion of mesenchymal stem cells on microcarriers.
As células mesenquimais estromais multipotentes (CMM) são na atualidade uma fonte atrativa para aplicações na engenharia de tecidos e na terapia celular. Devido à baixa disponibilidade nos tecidos (0,01%-0,0005%) e às elevadas doses necessárias para uma infusão (aproximadamente 106 células/Kg paciente) tornou-se necessário o desenvolvimento de tecn
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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22. Expressão heteróloga de celulases em Kluyveromyces marxianus para utilização em bioprocesso consolidado de produção de etanol celulósico / Heterologous expression of cellulases in Kluyveromyces marxianus for cellulosic ethanol production by consolidated bioprocess
O alto custo de celulases constitui uma das principais barreiras para a bioconversão de lignocelulose em etanol, e o acoplamento da produção de celulases à sacarificação e fermentação simultânea do bagaço, em Bioprocesso Consolidado, pode contribuir para a viabilização deste processo. Para tanto, seria necessário um agente biocatalizador, ou um
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
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23. Expressão diferencial de microRNAs em células mononucleares do sangue periférico de crianças com síndrome de Down.
A trissomia do cromossomo 21 é a base genética da síndrome de Down (SD), a cromossomopatia humana mais frequente. O fenótipo da SD pode incluir várias características dismórficas, deficiência intelectual, alterações imunológicas, cardiopatias congênitas, risco aumentado para leucemias específicas, alterações neurológicas, entre outras. Existe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/11/2011
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24. Bioprocesso de caracterização, manejo, produção, conservação e multiplicação de galinhas naturalizadas. / Bioprocess characterization, management, production, conservation and multiplication of chickens naturalized.
O desenvolvimento deste bioprocesso ocorreu na Base Experimental da Embrapa Meio-Norte, em Teresina PI (5 5 20 S, 42 48 7 W), localizada na mesorregião Centro Norte Piauiense, onde foi construído um núcleo de conservação e multiplicação de ecótipos de galinhas naturalizadas composto dos setores de caracterização, multiplicação e avalição, conta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011