Bioreactor Cultivation
Mostrando 13-24 de 40 artigos, teses e dissertações.
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13. Vacinas recombinantes contra erisipela suína: desenvolvimento integrado de bioprocesso, da biologia molecular ao biorreator
A erisipela suína é uma das enfermidades que causam grandes prejuízos na suinocultura em todo o mundo. A doença é causada pela bactéria Erysipelothrix rhusiopathiae, e a proteína de superfície SpaA desse microrganismo é um de seus principais antígenos. Neste trabalho, estudou-se o desenvolvimento de vacinas recombinantes contra a erisipela suína a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/10/2011
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14. Produção de nisina em leite desnatado diluído por Lactococcus lactis subsp. lactis ATCC 11454 em biorreator / Nisin production in diluted skimmed milk utilizing Lactococcus lactis subsp. lactis ATCC 11454 in bioreactor
Nisin is a natural antimicrobial peptide produced by Lactococcus lactis subsp. lactis ATCC 11454 during its exponential growth phase. The bacteriocin is used as natural food preservative due to its antimicrobial activity against Gram-positive bacteria and outgrowth of spores. This property allows its application in numerous fields (pharmaceutical, veterinary
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
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15. Application of response surface methodology to enhancement of biomass production by Lactobacillus rhamnosus E/N
Response surface methodology (RSM) was employed to study the effects of various medium components on biomass production by Lactobacillus rhamnosus E/N. This strain is commonly used in the pharmaceutical and food industries due to its beneficial effect on the human gut and general health. The best medium composition derived from RSM regression was (in g/l) gl
Braz. J. Microbiol.. Publicado em: 2011-12
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16. Production and extraction of clavulanic acid from Streptomyces spp. by extractive fermentation using aqueous two-phase system / Produção e extração de ácido clavulânico de Streptomyces spp. por fermentação extrativa utilizando sistemas de duas fases aquosas
Clavulanic acid (CA) is a potent inhibitor of β-lactamases used in the medical field. Alternative methods, economic and simple purification are of great interest. This PhD project aims to produce and extract clavulanic acid of Streptomyces spp. By extractive fermentation using aqueous two-phase system (ATPS) - Polyethylene glycol (PEG)/phosphate salts.
Publicado em: 2010
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17. Kinetic study of Drosophila melanogaster cells transfected to produce the rabies vírus glycoprotein in bioreactor / Estudo cinético de células de Drosophila melanogaster transfectadas para a produção da glicoproteína da raiva em biorreator
The interest in using insect cells to produce complex proteins is due to its ease of cultivation and its glycosylation pattern equivalent to that of mammalian cells systems. The objective of this work was to identify the limiting or inhibiting factors for the production of a rabies virus glycoprotein (RVGP), expressed in the cytoplasmatic membrane of a trans
Publicado em: 2010
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18. Produção de cefamicina C por Streptomyces clavuligerus em batelada e batelada alimentada
Cephamycin C (CephC) is a natural antibiotic produced by Streptomyces clavuligerus that presents β-lactamases resistance, enzymes that clives β-lactam of antibiotics. The aim of present work was study cephamycin production by Streptomyces clavuligerus in batch and fed-batch cultivations, in order to define important parameters as culture medium and
Publicado em: 2010
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19. Enzimas pectinolíticas : seleção de linhagens fúngicas produtoras, caracterização e aplicação em processos da indústria de alimentos
In this work, fungus samples isolated from decomposing vegetables were tested with respect to their capacity of producing pectinases to be applied to the enzymatic treatment of apple and bilberry juices. Taking in account the secretion of endo-polygalacturonase (endo-PG), two isolates which were identified and named Aspergillus niger LB23 e Aspergillus fumig
Publicado em: 2010
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20. Estudo do crescimento de Ceriporiopsis subvermispora em culturas submersas para a produção de inóculos destinados ao processo de biopolpação / Studies on the submerged culturing of Ceriporiopsis subvermispora for inocolum production used in biopulping processes
The present work evaluated suitable systems for producing Ceriporiopsis subvermispora mycelium in submerged cultures. Mycellium produced was used in subsequent inoculation of wood chips in biopulping processes. The development of appropriated technologies for producing large amounts of inoculum may be a key step in biopulping, since currently there are no es
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/08/2009
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21. Production of Poly-γ-Glutamate (PGA) Biopolymer by Batch and Semicontinuous Cultures of Immobilized Bacilluslicheniformis strain-R
Production of Polyglutamate (PGA) biopolymer by immobilized Bacilluslicheniformis strain-R was intensively investigated. Preliminary experiments were carried out to address the most suitable immobilization methodology. Entrapment of Bacillus cells in alginate-agar led optimal PGA production (36.75 g/l), with 1.32- and 2.18-fold increase in comparison with al
Brazilian Journal of Microbiology. Publicado em: 2009-12
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22. Produção de celulases e xilanases por Penicillium echinulatum em processo submerso utilizando biorreatores com agitação mecânica e airlift de circulação interna
Cellulolytic enzymes have many uses, particularly in the food, textile, and paper industries. However, their major potential use is in the hydrolysis of cellulose a component of lignocellulosic residues for ethanol fuel production. Among the cellulase-producing microorganisms, mutants of the Trichoderma genus are the most studied and most widely used in the
Publicado em: 2009
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23. Influence of stationary and bioreactor cultivation on Lentinula edodes (berk) pegler lignocellulolitic activity
Lentinula edodes pertence ao grupo de fungos causadores da podridão branca, conhecidos pela capacidade efetiva de degradar compostos lignocelulósicos. No cultivo deste fungo o método de incubação, substratos e características genéticas determinam o comportamento enzimático. Este trabalho teve como objetivo verificar a influência do cultivo estacion�
Brazilian Archives of Biology and Technology. Publicado em: 2008-04
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24. Evaluation of the average shear rate in stirred and aerated tank bioreactor. / Avaliação da velocidade de cisalhamento média em biorreator convencional tipo tanque agitado e aerado.
In biochemical processes, shear rate ( γ&) in the system is an important variable on design and operation of bioreactors. Shear can result in damage to the cells and the microorganisms, taking to the viability loss and even to the cellular breaking and the microbial death. In the present work was proposed a methodology to quantify average shear rate ( a
Publicado em: 2007