Cultivation of Methylosinus trichosporium OB3b: III. production of particulate methane monooxygenase in continuous culture.

abstract：:Based on the recently constructed Escherichia coli itaconic acid production strain ita23, we aimed to improve the productivity by applying a two-stage process strategy with decoupled production of biomass and itaconic acid. We constructed a strain ita32 (MG1655 ΔaceA Δpta ΔpykF ΔpykA pCadCs), which, in contrast to ita...

journal_title：Biotechnology and bioengineering

authors： Harder BJ,Bettenbrock K,Klamt S

更新日期：2018-01-01 00:00:00

abstract：:A model that was used to describe toxicity from high concentrations of chlorinated aliphatic hydrocarbons (CAHs) on reductively dechlorinating cultures in batch reactors (Sabalowsky and Semprini (in press)) was extended here to simulate observations in continuous flow suspended and attached growth reactors. The reduct...

journal_title：Biotechnology and bioengineering

authors： Sabalowsky AR,Semprini L

更新日期：2010-10-15 00:00:00

abstract：:The growth and product formation of a Savinase-producing Bacillus clausii were investigated in high-cell-density fed-batch cultivations with both linear and exponential feed profiles. The highest specific productivity of Savinase was observed shortly after the end of the initial batch phase for all feed profiles appli...

journal_title：Biotechnology and bioengineering

authors： Christiansen T,Michaelsen S,Wümpelmann M,Nielsen J

更新日期：2003-08-05 00:00:00

abstract：:A two-parameter deactivation model is proposed to describe the kinetics of activity stabilization for some enzymes. The single-step unimolecular mechanism exhibits non-first-order deactivation kinetics since the final enzyme state, E(1) is not completely inactivated. The usefulness of the model is demonstrated by appl...

journal_title：Biotechnology and bioengineering

authors： Sadana A,Henley JP

更新日期：1987-10-20 00:00:00

abstract：:A novel two-stage bioreactor has been designed for a combined submerged (SF) and solid substrate fermentation (SSF) of wheat straw. The straw was pretreated with steam, and cellulases from the culture fluid of Trichoderma reesei were adsorbed on it for increased bioconvertibility. SSF was conducted in the top part of ...

journal_title：Biotechnology and bioengineering

authors： Viesturs UE,Strikauska SV,Leite MP,Berzins AJ,Tengerdy RP

更新日期：1987-08-05 00:00:00

abstract：:The ability to capture cell-free DNA from the gastrointestinal tract, in a minimally invasive manner, could enhance our ability to diagnose gastrointestinal disease, or gain a better understanding of the spatial mapping of the intestinal microbiota. We, therefore, sought to identify a class of capture agents that coul...

journal_title：Biotechnology and bioengineering

authors： Hilmer AJ,Jeffrey RB,Park WG,Khosla C

更新日期：2017-04-01 00:00:00

abstract：:Capitalizing on components evolved to metabolize ethanol in Aspergillus nidulans, we previously designed the first molecular gas-gene expression interface using gaseous acetaldehyde as the major inducer. This fungus-derived acetaldehyde-inducible gene regulation (AIR) system operated perfectly and enabled precise and ...

journal_title：Biotechnology and bioengineering

authors： Weber W,Spielmann M,Daoud El-Baba M,Keller B,Aubel D,Fussenegger M

更新日期：2005-06-30 00:00:00

abstract：:Regenerating damaged tissue interfaces remains a significant clinical challenge, requiring recapitulation of the structure, composition, and function of the native enthesis. In the ligament-to-bone interface, this region transitions from ligament to fibrocartilage, to calcified cartilage and then to bone. This gradati...

journal_title：Biotechnology and bioengineering

authors： Harris E,Liu Y,Cunniffe G,Morrissey D,Carroll S,Mulhall K,Kelly DJ

更新日期：2017-10-01 00:00:00

abstract：:The use of a hydrogen-sensitive palladium-metal oxide semiconductor (Pd-MOS) sensor in combination with a membrane for liquid-to-gas transfer for the detection of dissolved hydrogen was investigated. The system was evaluated with known concentrations of dissolved hydrogen in water. The lowest concentration detected wi...

journal_title：Biotechnology and bioengineering

authors： Björnsson L,Hörnsten EG,Mattiasson B

更新日期：2001-04-05 00:00:00

abstract：:The regeneration of functional, clinically viable, tissues from acellular ex vivo tissues has been problematic largely due to poor nutrient transport conditions that limit cell migration and integration. Compounding these issues are subcellular pore sizes that necessarily requires extracellular matrix (ECM) remodeling...

journal_title：Biotechnology and bioengineering

authors： Tosun Z,McFetridge PS

更新日期：2013-07-01 00:00:00

abstract：:The effect of the water content on the lipase-catalyzed (Candida rugosa) interesterification (acidolysis) of menhaden oil with conjugated linoleic acid was studied for amounts of added water ranging from 0-4% (w/w). The rate of the acidolysis reaction increased with increasing water content, but the corresponding perc...

journal_title：Biotechnology and bioengineering

authors： Torres CF,Hill CG Jr

更新日期：2002-06-05 00:00:00

abstract：:Flocculation of yeast cells occurs during the fermentation of beer. Partway through the fermentation the cells become flocculent and start to form flocs. If the environmental conditions, such as medium composition and fluid velocities in the tank, are optimal, the flocs will grow in size large enough to settle. After ...

journal_title：Biotechnology and bioengineering

authors： van Hamersveld EH,van der Lans RG,Caulet PJ,Luyben KC

更新日期：1998-02-05 00:00:00

abstract：:RNA viruses are capable of undergoing extremely rapid evolution due to their high rates of reproduction, small genome size, and a high frequency of spontaneous mutagenesis. Here we demonstrate that a virus-like, evolutionary state can be created by propagating a phagemid population in a hypermutator strain of Escheric...

journal_title：Biotechnology and bioengineering

authors： Long-McGie J,Liu AD,Schellenberger V

更新日期：2000-04-05 00:00:00

abstract：:Five microbial inocula were evaluated in batch tests for the ability to remediate mine drainage (MD). Dairy manure (DM), anaerobic digester sludge, substrate from the Luttrell (LUTR) and Peerless Jenny King (PJK) sulfate-reducing permeable reactive zones (SR-PRZs) and material from an MD-treatment column that had been...

journal_title：Biotechnology and bioengineering

authors： Pereyra LP,Hiibel SR,Pruden A,Reardon KF

更新日期：2008-11-01 00:00:00

abstract：:A conceptual model describing the relative roles of sorption and precipitation processes for metals in solid-solution suspensions is presented. The model performance is demonstrated using experimental data on sorption and precipitation of metals in samples of activated sludge mixed liquor. Based on the experimental re...

journal_title：Biotechnology and bioengineering

authors： Kodukula PS,Patterson JW,Surampalli RY

更新日期：1994-04-15 00:00:00

abstract：:In analyzing microbial cellulose utilization, it would be useful to independently measure the mass concentration of cells and cellulase enzymes. Such measurements would allow investigation of the allocation of cellular resources between synthesis of cells and cellulase, in vivo cell- and cellulase-specific cellulose h...

journal_title：Biotechnology and bioengineering

authors： Lynd LR,Zhang Y

更新日期：2002-02-15 00:00:00

abstract：:The hypothesis that frequency and amplitude response can be used in a complicated metabolic pathway kinetics model for optimal parameter estimation, as speculated by its successful prior usage for a mechanical oscillator and a heterogeneous chemical system, is tested here. Given the complexity of the glycolysis model ...

journal_title：Biotechnology and bioengineering

authors： Zimmerman WB

更新日期：2005-10-05 00:00:00

abstract：:Biosorption of elements is a little understood phenomenon exhibited by some types of even nonliving microbial biomass. A common fungus Rhizopus arrhizus has been reported to take up uranium from aqueous solutions to the extent of 180 mg U(6+)/g. The mechanism of uranium sequestering by this type of biomass was studied...

journal_title：Biotechnology and bioengineering

authors： Tsezos M,Volesky B

更新日期：1982-02-01 00:00:00

abstract：:The effective diffusivity of oxygen, D(e), in Ca-alginate and PVA-SbQ gels was measured using a two-chamber vessel with a membrane between the two chambers. The effect of cell density, C(c), on D(e) in Ca-alginate gels was studied. The effective diffusivity of oxygen decreased with increasing cell density, to C(c) = 1...

journal_title：Biotechnology and bioengineering

authors： Sun Y,Furusaki S,Yamauchi A,Ichimura K

更新日期：1989-06-05 00:00:00

abstract：:The heterotrophic marine alga Crypthecodinium cohnii is known to produce docosahexaenoic acid (DHA), a polyunsaturated fatty acid with food and pharmaceutical applications, during batch cultivation on complex media containing sea salt, yeast extract, and glucose. In the present study, fed-batch cultivation was studied...

journal_title：Biotechnology and bioengineering

authors： De Swaaf ME,Sijtsma L,Pronk JT

更新日期：2003-03-20 00:00:00

abstract：:The cellulase production from immobilized Trichoderma reesei composites prepared by radiation polymerization at low temperature was studied. The production of cellulase from the cells irradiated by radiation was slightly retarded at the initial stage of the culture, but was immediately recovered. The production of cel...

journal_title：Biotechnology and bioengineering

authors： Kumakura M,Kaetsu I,Nisizawa K

更新日期：1984-01-01 00:00:00

abstract：:A mechanistic model of enzymatic hydrolysis taking into account the morphology of the cellulosic particles and its evolution with time was developed. The individual behavior of the main enzymes involved in the reaction (cellobiohydrolases, endoglucanases, and β-glucosidases), as well as synergy effects, were also incl...

journal_title：Biotechnology and bioengineering

authors： Huron M,Hudebine D,Lopes Ferreira N,Lachenal D

更新日期：2016-05-01 00:00:00

abstract：:The production of dry-grind corn ethanol results in the generation of intermediate products, thin and whole stillage, which require energy-intensive downstream processing for conversion into commercial animal feed products. Hydrothermal carbonization of thin and whole stillage coupled with anaerobic digestion was inve...

journal_title：Biotechnology and bioengineering

authors： Wood BM,Jader LR,Schendel FJ,Hahn NJ,Valentas KJ,McNamara PJ,Novak PM,Heilmann SM

更新日期：2013-10-01 00:00:00

abstract：:Retroviral-derived biopharmaceuticals (RV) target numerous therapeutic applications, from gene therapy to virus-like particle (rVLP)-based vaccines. During particle formation, beside the pseudotyped envelope proteins, RV can incorporate proteins derived from the virus producer cells (VPC). This may be detrimental by r...

journal_title：Biotechnology and bioengineering

authors： Rodrigues AF,Guerreiro MR,Santiago VM,Dalba C,Klatzmann D,Alves PM,Carrondo MJ,Coroadinha AS

更新日期：2011-11-01 00:00:00

abstract：:The budding yeast Saccharomyces cerevisiae is equipped with G protein-coupled receptors (GPCR). Because the yeast GPCR signaling mechanism is partly similar to that of the mammalian system, S. cerevisiae can be used for a host of mammalian GPCR expression and ligand-mediated activation assays. However, currently avail...

journal_title：Biotechnology and bioengineering

authors： Fukutani Y,Ishii J,Kondo A,Ozawa T,Matsunami H,Yohda M

更新日期：2017-06-01 00:00:00

abstract：:The quality of cassava starch, an important trait in cassava breeding programs, determines its applications in various industries. For example, development of waxy (having a low level of amylose) cassava is in demand. Amylose is synthesized by granule-bound starch synthase I (GBSSI) in plants, and therefore, down-regu...

journal_title：Biotechnology and bioengineering

authors： Zhao SS,Dufour D,Sánchez T,Ceballos H,Zhang P

更新日期：2011-08-01 00:00:00

abstract：:Past technoeconomic modeling work has identified the relatively large contribution that enzymatic hydrolysis adds to the total cost of producing ethanol from lignocellulosic substrates. This cost was primarily due to the high concentration of enzyme and long incubation time that was required to obtain complete hydroly...

journal_title：Biotechnology and bioengineering

authors： Gregg DJ,Saddler JN

更新日期：1996-08-20 00:00:00

abstract：:In this study, the inhibitory effects and anaerobic biotransformation of acrylic acid in computer-controlled pH-stat completely stirred tank reactors (CSTRs) with two different cultures, namely unacclimated and acrylate-acclimated acetate-enriched Methanosarcina and homogenized (crushed) granular cultures, were invest...

journal_title：Biotechnology and bioengineering

authors： Demirer GN,Speece RE

更新日期：1999-01-20 00:00:00

abstract：:In this study, we assessed the importance of cytoskeleton organization in the mammalian cells used to produce therapeutic proteins. Two cytoskeletal genes, Actin alpha cardiac muscle 1 (ACTC1) and a guanosine triphosphate GTPase-activating protein (TAGAP), were found to be upregulated in highly productive therapeutic ...

journal_title：Biotechnology and bioengineering

authors： Pourcel L,Buron F,Arib G,Le Fourn V,Regamey A,Bodenmann I,Girod PA,Mermod N

更新日期：2020-04-01 00:00:00

abstract：:Many bacteria used for biotechnological applications are naturally motile. Their "bio-nanopropeller" driven movement allows searching for better environments in a process called chemotaxis. Since bacteria are extremely small in size compared to the bulk fluid volumes in bioreactors, single cell motility is not conside...

journal_title：Biotechnology and bioengineering

authors： Arora S,Bhat V,Mittal A

更新日期：2007-08-15 00:00:00