Remote delivery of hydroxyl radicals via secondary chemistry of a nonthermal plasma effluent.

abstract：:The naturally existing microbial hosts can rarely satisfy industrial requirements, thus there has always been an intense effort in strain engineering to meet the needs of these bioprocesses. Here, in this work, we want to prove the concept that engineering global transcription factor cAMP receptor protein (CRP) of Esc...

journal_title：Biotechnology and bioengineering

authors： Zhang H,Chong H,Ching CB,Jiang R

更新日期：2012-05-01 00:00:00

abstract：:Protein localization in Saccharomyces cerevisiae was studied with two plasmid systems used as a model: one containing the SUC2 structural gene fused with the MFalpha1 (alpha-factor) promoter and signal-sequence, the other containing the entire SUC2 gene. Special emphasis was placed on the effect of promoter/signal-seq...

journal_title：Biotechnology and bioengineering

authors： Marten MR,Seo JH

更新日期：1989-11-01 00:00:00

abstract：:As the therapeutic monoclonal antibody (mAb) market continues to grow, optimizing production processes is becoming more critical in improving efficiencies and reducing cost-of-goods in large-scale production. With the recent trends of increasing cell culture titers from upstream process improvements, downstream capaci...

journal_title：Biotechnology and bioengineering

authors： Dizon-Maspat J,Bourret J,D'Agostini A,Li F

更新日期：2012-04-01 00:00:00

abstract：:Chondral and osteochondral lesions represent one of the most challenging problems in the orthopedic field, as these types of injuries lead to disability and worsened quality of life for patients and have an economic impact on the healthcare system. The aim of this in vivo study was to develop a new tissue engineering ...

journal_title：Biotechnology and bioengineering

authors： Tschon M,Brogini S,Parrilli A,Bertoldi S,Silini A,Parolini O,Faré S,Martini L,Veronesi F,Fini M,Giavaresi G

更新日期：2021-01-01 00:00:00

abstract：:The influence of solution Eh on the rate of ferrous iron oxidation by Acidithiobacillus ferrooxidans is characterized. The experimental approach was based on the use of a two-chamber bioelectrochemical cell, which can determine the ferrous iron oxidation rate at controlled potential. Results enabled the formulation of...

journal_title：Biotechnology and bioengineering

authors： Meruane G,Salhe C,Wiertz J,Vargas T

更新日期：2002-11-05 00:00:00

abstract：:A novel reaction system was developed to maximize the catalytic efficiency of chloroperoxidase (CPO, from Caldariomyces fumago) toward the oxidation of hydrocarbons. The reaction system consisted of an organic/aqueous emulsion comprising pure substrate and aqueous buffer supplemented with the surfactant dioctyl sulfos...

journal_title：Biotechnology and bioengineering

authors： Park JB,Clark DS

更新日期：2006-05-05 00:00:00

abstract：:Among various routes for the biological hydrogen production, the NAD(P)H-dependent pentose phosphate (PP) pathway is the most efficient for the dark fermentation. Few studies, however, have focused on the glucose-6-phosphate 1-dehydrogenase, encoded by zwf, as a key enzyme activating the PP pathway. Although the gluco...

journal_title：Biotechnology and bioengineering

authors： Kim YM,Cho HS,Jung GY,Park JM

更新日期：2011-12-01 00:00:00

abstract：:Seven different supports were compared in solid-phase S(N)Ar and S(N)2 macrocyclization reactions. Product purities were assayed for a relatively facile ring-closure process to give products 1 and 3. Some less-facile ring-closure reactions give the undesired dimeric macrocyclization by-products 2; some of these more-d...

journal_title：Biotechnology and bioengineering

authors： Feng Y,Burgess K

更新日期：2000-01-01 00:00:00

abstract：:The evolution of microbial populations involved in simulated-heap leaching of a polymetallic black schist sulfide ore (from the recently-commissioned Talvivaara mine, Finland) was monitored in aerated packed bed column reactors over a period of 40 weeks. The influence of ore particle size (2-6.5 mm and 6.5-12 mm) on c...

journal_title：Biotechnology and bioengineering

authors： Wakeman K,Auvinen H,Johnson DB

更新日期：2008-11-01 00:00:00

abstract：:Pronounced spatial nonuniformities in cell density, physiology, and activity frequently arise within densely packed immobilized cell supports. For a more fundamental understanding of immobilized cell phenomena, we have developed high-resolution microfluorimetric procedures to analyze local variations in both immobiliz...

journal_title：Biotechnology and bioengineering

authors： Kuhn RH,Peretti SW,Ollis DF

更新日期：1991-08-05 00:00:00

abstract：:Streamline Direct CST I is a new type of ion exchanger with multi-modal functional groups, specially designed for an expanded bed adsorption (EBA) process, which can capture directly the proteins from the high ionic strength feedstocks with a high binding capacity. In this study, an experimental study is carried out f...

journal_title：Biotechnology and bioengineering

authors： Li P,Xiu G,Mata VG,Grande CA,Rodrigues AE

更新日期：2006-08-20 00:00:00

abstract：:Escherichia coli and Desulfovibrio desulfuricans reduce Tc(VII) (TcO(4)(-)) with formate or hydrogen as electron donors. The reaction is catalyzed by the hydrogenase component of the formate hydrogenlyase complex (FHL) of E. coli and is associated with a periplasmic hydrogenase activity in D. desulfuricans. Tc(VII) re...

journal_title：Biotechnology and bioengineering

authors： Lloyd JR,Thomas GH,Finlay JA,Cole JA,Macaskie LE

更新日期：1999-01-01 00:00:00

abstract：:As photoautotrophic prokaryotes, cyanobacteria are promising platforms for producing value-added bioproducts. However, few regulatory genetic parts and devices (e.g., inducible promoters and regulatory circuits) have been developed for these potential hosts. Furthermore, the devices that have been created respond only...

journal_title：Biotechnology and bioengineering

authors： Immethun CM,Ng KM,DeLorenzo DM,Waldron-Feinstein B,Lee YC,Moon TS

更新日期：2016-02-01 00:00:00

abstract：:Recently, the respiratory quotient (RQ) of microbes measured in situ in a fermentor by exit-gas analysis has been used successfully, for instance, in a fed-batch culture of baker's yeast as a criterion to control the feeding rate.(1-3) It is significant here to keep RQ values close to unity throughout; any deviations ...

journal_title：Biotechnology and bioengineering

authors： Aiba S,Furuse H

更新日期：1990-08-20 00:00:00

abstract：:Bacterial magnetic particles (BMPs) were used for the identification of cyanobacterial DNA. Genus-specific oligonucleotide probes for the detection of Anabaena spp., Microcystis spp., Nostoc spp., Oscillatoria spp., and Synechococcus spp. were designed from the variable region of the cyanobacterial 16S rDNA of 148 str...

journal_title：Biotechnology and bioengineering

authors： Matsunaga T,Nakayama H,Okochi M,Takeyama H

更新日期：2001-06-05 00:00:00

abstract：:Fed-batch cultures of recombinant microorganisms have attracted attention as they can separate cell growth stage from cloned-gene expression phase during fermentations. In this work, the effect of different glucose feeding strategies on cell growth and cloned gene expression was studied during aerobic fed-batch fermen...

journal_title：Biotechnology and bioengineering

authors： Patkar A,Seo JH

更新日期：1992-06-05 00:00:00

abstract：:Hydraulic characteristics of biological wastewater treatment systems were shown to affect bacterial state distributions and system performance through mathematical simulations. The term "state" is used here to mean the microbial storage product and biomass content of a bacterium. The traditional approach to simulating...

journal_title：Biotechnology and bioengineering

authors： Schuler AJ

更新日期：2006-08-05 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：:Overexpression of recombinant proteins in Escherichia coli often leads to a severe growth retardation of the host cells. The phage T7 promoter phi10 in a pET vector was utilized to express human superoxide dismutase. Induction with IPTG lead to an increase in protein content and cell size and a termination of cell div...

journal_title：Biotechnology and bioengineering

authors： Soriano E,Borth N,Katinger H,Mattanovich D

更新日期：2002-10-05 00:00:00

abstract：:Although sophorolipids (SLs) produced by S. bombicola are a real showcase for the industrialization of microbial biosurfactants, some important drawbacks are associated with this efficient biological process, e.g., the simultaneous production of acidic and lactonic SLs. Depending on the application, there is a require...

journal_title：Biotechnology and bioengineering

authors： Roelants SL,Ciesielska K,De Maeseneire SL,Moens H,Everaert B,Verweire S,Denon Q,Vanlerberghe B,Van Bogaert IN,Van der Meeren P,Devreese B,Soetaert W

更新日期：2016-03-01 00:00:00

abstract：:The effector functions elicited by IgG antibodies strongly depend on the carbohydrate moiety linked to the Fc region of the protein. Therefore several approaches have been developed to rationally manipulate these glycans and improve the biological functions of the antibody. Overexpression of recombinant beta1,4-N-acet...

journal_title：Biotechnology and bioengineering

authors： Ferrara C,Brünker P,Suter T,Moser S,Püntener U,Umaña P

更新日期：2006-04-05 00:00:00

abstract：:Expression of the lactose (lac) operon in the Escherichia coli chromosome has been studied in mixed-sugar chemostat cultures under steady-state and transient conditions. A unified model has been formulated which involves regulation of active inducer (lactose) transport, promoter-operator regulated expression of the la...

journal_title：Biotechnology and bioengineering

authors： Ray NG,Vieth WR,Venkatasubramanian K

更新日期：1987-06-01 00:00:00

abstract：:Murine hybridoma cells were grown in a bubble column that was inclined up to 45 degrees from vertical. Inclining the column by a few degrees separated the rising bubbles against the upper surface, leaving the bulk of the liquid bubble free. The liquid was circulated well by the rising bubbles, but collection of cells ...

journal_title：Biotechnology and bioengineering

authors： Lu GZ,Gray MR,Thompson BG,Suresh MR

更新日期：1995-01-20 00:00:00

abstract：:An experimental device was constructed to allow nearly simultaneous measurements to be made on temperature and gas composition at different depths in a solid-substrate fermentation bed. The time-dependent values of temperature, mol % O(2) and mol % CO(2) were measured at five positions in beds 6.35 cm (2.5 in.) deep. ...

journal_title：Biotechnology and bioengineering

authors： Rathbun BL,Shuler ML

更新日期：1983-04-01 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：:Proper analysis of label distribution in metabolic pathway intermediates is critical for correct interpretation of experimental data and strategic experimental design. While, for example, 13C nuclear magnetic resonance (NMR) spectroscopy is usually limited to the measurement of degrees of 13C enrichment, more informat...

journal_title：Biotechnology and bioengineering

authors： Klapa MI,Park SM,Sinskey AJ,Stephanopoulos G

更新日期：1999-02-01 00:00:00

abstract：:Differences in plasmid retention and expression are studied in both suspended and biofilm cultures of Escherichia coli DH5alpha(PMJR1750). An alternative mathematical model is proposed which allows the determination of plasmid loss probability in both suspended batch and continuously fed biofilm cultures. In our exper...

journal_title：Biotechnology and bioengineering

authors： Huang CT,Peretti SW,Bryers JD

更新日期：1993-01-20 00:00:00

abstract：:The effect of organic solvents on the equilibrium position of lipase-catalyzed esterification of glycerol and decanoic acid has been investigated. The reaction is carried out in an aqueous-organic two-phase system. In polar solvents, high mole fractions of monoacylglycerol and low mole fractions of triacylglycerol and...

journal_title：Biotechnology and bioengineering

authors： Janseen AE,Van der Padt A,Van Sonsbeek HM,Van't Riet K

更新日期：1993-01-05 00:00:00

abstract：:Contactless simultaneous positioning of micrometer-sized particles in suspension (e.g., copolymer beads, living cells, silicon microparts) can be performed using ultrasound. Current devices are capable of collecting particles into planes or lines by exciting a resonance in the fluid by means of a piezoelectric transdu...

journal_title：Biotechnology and bioengineering

authors： Neild A,Oberti S,Radziwill G,Dual J

更新日期：2007-08-01 00:00:00

abstract：:The influence of microheterogeneity on enzyme inactivation kinetics is examined. A continuous normal distribution of the thermal activation energy is assumed, and using this, a simple mathematical model is developed to find the activity-time trajectories for a microheterogeneous enzyme. Using an example, the model is ...

journal_title：Biotechnology and bioengineering

authors： Malhotra A,Sadana A

更新日期：1987-07-01 00:00:00