High- and low-molecular-weight chitosan act as adjuvants during single-dose influenza A virus protein vaccination through distinct mechanisms.

abstract：:Engineered strains of Saccharomyces cerevisiae are used for industrial production of succinic acid. Optimal process conditions for dicarboxylic-acid yield and recovery include slow growth, low pH, and high CO2 . To quantify and understand how these process parameters affect yeast physiology, this study investigates in...

journal_title：Biotechnology and bioengineering

authors： Hakkaart X,Liu Y,Hulst M,El Masoudi A,Peuscher E,Pronk J,van Gulik W,Daran-Lapujade P

更新日期：2020-03-01 00:00:00

abstract：:A comprehensive study of the application of continuous zone electrophoresis to preparative separation of proteins in free solution is presented. First, the influence of electric field strength, buffer residence time in the chamber, sample flow rate, and sample concentration on separation resolution and throughput were...

journal_title：Biotechnology and bioengineering

authors： Nath S,Schütte H,Hustedt H,Deckwer WD

更新日期：1993-09-20 00:00:00

abstract：:To alleviate plasmid instability and to prolong the production phase of subtilisin, integrable plasmid and spore mutants are used. Compared with batch-type shake flask cultures, spore mutants' ability to produce subtilisin can be well pronounced in fed-batch and continuous cultures. Hence, the two culture methods make...

journal_title：Biotechnology and bioengineering

authors： Oh MK,Kim BG,Park SH

更新日期：1995-09-20 00:00:00

abstract：:Application of the well-characterized Streptococcus pyogenes CRISPR-Cas9 system in actinomycetes streptomycetes has enabled high-efficiency multiplex genome editing and CRISPRi-mediated transcriptional regulation in these prolific bioactive metabolite producers. Nonetheless, SpCas9 has its limitations and can be ineff...

journal_title：Biotechnology and bioengineering

authors： Yeo WL,Heng E,Tan LL,Lim YW,Lim YH,Hoon S,Zhao H,Zhang MM,Wong FT

更新日期：2019-09-01 00:00:00

abstract：:This study examined the hydrodynamic characteristics of a liquid-solid fluidized-bed bioreactor using elastic particles (PVA gel beads) of various diameters as carriers. The drag coefficient-Reynolds number, velocity-voidage, and expansion index-Reynolds number relationships observed during fluidization of PVA gel bea...

journal_title：Biotechnology and bioengineering

authors： Wu JY,Chen KC,Chen CT,Hwang SC

更新日期：2003-09-05 00:00:00

abstract：:Integrated process concepts for enzymatic cephalexin synthesis were investigated by our group, and this article focuses on the integration of reactions and product removal during the reactions. The last step in cephalexin production is the enzymatic kinetic coupling of activated phenylglycine (phenylglycine amide or p...

journal_title：Biotechnology and bioengineering

authors： Schroën CG,Nierstrasz VA,Bosma R,Kroon PJ,Tjeerdsma PS,DeVroom E,VanderLaan JM,Moody HM,Beeftink HH,Janssen AE,Tramper J

更新日期：2002-10-20 00:00:00

abstract：:Affinity chromatography using immobilized S-protein was used for the screening of affinity peptide ligands from two soluble peptide libraries. Peptide library I consisted of octamers with glycine (G) at both termini of each peptide, i.e. GXXXXXXG. The six center positions were constructed using random sequences of six...

journal_title：Biotechnology and bioengineering

authors： Huang PY,Carbonell RG

更新日期：1999-06-20 00:00:00

abstract：:The possibility of biologically detoxifying a contaminated soil from an Italian dump site containing about 1500 mg/kg (in dry soil) of polychlorinated biphenyls was studied in the laboratory in this work. The soil, which contained indigenous aerobic bacteria capable of growing on biphenyl or on monochlorobenzoic acids...

journal_title：Biotechnology and bioengineering

authors： Fava F,Bertin L

更新日期：1999-07-20 00:00:00

abstract：:The in vitro generation of cell-based three dimensional (3D) nerve tissue is an attractive subject to improve graft survival and integration into host tissue for neural tissue regeneration or to model biological events in stem cell differentiation. Although 3D organotypic culture strategies are well established for 3D...

journal_title：Biotechnology and bioengineering

authors： Kim BC,Jun SM,Kim SY,Kwon YD,Choe SC,Kim EC,Lee JH,Kim J,Suh JF,Hwang YS

更新日期：2017-04-01 00:00:00

abstract：:We report on a simple method to rapidly generate very large libraries of genes encoding mutant proteins without the use of DNA amplification, and the application of this methodology in the construction of synthetic immunoglobulin variable heavy (V(H)) and light (V(kappa)) libraries. Four high quality, chemically synth...

journal_title：Biotechnology and bioengineering

authors： Ge X,Mazor Y,Hunicke-Smith SP,Ellington AD,Georgiou G

更新日期：2010-06-15 00:00:00

abstract：:Cellulose fibers in water form networks that give rise to an apparent yield stress, especially at high solids contents. Measuring the yield stress and correlating it with fiber concentration is important for the biomass and pulp industries. Understanding how the yield stress behaves at high solids concentrations is cr...

journal_title：Biotechnology and bioengineering

authors： Lavenson DM,Tozzi EJ,McCarthy MJ,Powell RL

更新日期：2011-10-01 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：:Hemicellulose residues can be hydrolyzed into a sugar syrup using dilute mineral acids. Although this syrup represents a potential feedstock for biofuel production, toxic compounds generated during hydrolysis limit microbial metabolism. Escherichia coli LY01, an ethanologenic biocatalyst engineered to ferment the mixe...

journal_title：Biotechnology and bioengineering

authors： Zaldivar J,Ingram LO

更新日期：1999-01-01 00:00:00

abstract：:Conditions for the laboratory-scale production of acetoin plus diacetyl by Enterobacter cloacae ATCC 27613 were studied. Thirty-five g acetoin plus diacetyl/50 g sucrose were obtained when fermentation was carried out in 2.5 liter medium containing 12.5 g peptone and 12.5 g yeast extract, at pH 7.0, in a 5 liter conic...

journal_title：Biotechnology and bioengineering

authors： Gupta KG,Yadav NK,Dhawan S

更新日期：1978-12-01 00:00:00

abstract：:Kluyveromyces marxianus is a promising nonconventional yeast for biobased chemical production due to its rapid growth rate, high TCA cycle flux, and tolerance to low pH and high temperature. Unlike Saccharomyces cerevisiae, K. marxianus grows on low-cost substrates to cell densities that equal or surpass densities in ...

journal_title：Biotechnology and bioengineering

authors： McTaggart TL,Bever D,Bassett S,Da Silva NA

更新日期：2019-07-01 00:00:00

abstract：:In a previous paper, the overall or macrokinetics of the immobilized glucose oxidase--catalase system has been presented. In this paper a detailed analysis of the interaction of diffusion and reaction in this system will be presented. The mathematical treatment includes two consecutive reactions with two-substrate kin...

journal_title：Biotechnology and bioengineering

authors： Reuss M,Buchholz K

更新日期：1979-11-01 00:00:00

abstract：:Enzymatic hydrolysis of arabinoxylan is an important prerequisite for the utilization of hemicellulose for ethanol fermentation or for making the low calorie sweetener xylitol by catalytic hydrogenation of the generated xylose. This study focus on cloning and characterization of two industrial relevant beta-xylosidase...

journal_title：Biotechnology and bioengineering

authors： Rasmussen LE,Sørensen HR,Vind J,Viksø-Nielsen A

更新日期：2006-08-05 00:00:00

abstract：:There is strong evidence in the literature supporting the existence of significant mass transfer limitations on the kinetics of exogenous H(2) consumption by methanogens. The half saturation constant for H (2) uptake by a mixed-culture, CH(4) producing enrichment was measured using an experimental protocol that avoide...

journal_title：Biotechnology and bioengineering

authors： Giraldo-Gomez E,Goodwin S,Switzenbaum MS

更新日期：1992-10-05 00:00:00

abstract：:Feasibility of elemental sulfur reduction by Desulfovibrio desulfuricans in anaerobic conditions in a stirred reactor was studied. Hydrogen was used as energy source, whereas the carbonated species were bicarbonate and yeast extract. Attention was paid to reactor engineering aspects, biofilm formation on the sulfur su...

journal_title：Biotechnology and bioengineering

authors： Escobar C,Bravo L,Hernández J,Herrera L

更新日期：2007-10-15 00:00:00

abstract：:More than 80 years after its discovery, penicillin is still a widely used and commercially highly important antibiotic. Here, we analyse the metabolic network of penicillin synthesis in Penicillium chrysogenum based on the concept of elementary flux modes. In particular, we consider the synthesis of the invariant mole...

journal_title：Biotechnology and bioengineering

authors： Prauße MT,Schäuble S,Guthke R,Schuster S

更新日期：2016-01-01 00:00:00

abstract：:We have used a high-throughput LC/MS/UV/ELSD method to rapidly determine the absolute quantity and purity of 42 organic compounds from seven lead discovery libraries. A general calibration curve generated from a different set of 42 compounds with seven different scaffolds was used in this analysis. We have also studie...

journal_title：Biotechnology and bioengineering

authors： Fang L,Pan J,Yan B

更新日期：2000-01-01 00:00:00

abstract：:In this work, novel conductive composite nanofiber mesh possessing reactive groups was electrospun from solutions containing poly(acrylonitrile-co-acrylic acid) (PANCAA) and multi-walled carbon nanotubes (MWCNTs) for redoxase immobilization, assuming that the incorporated MWCNTs could behave as electrons transferor du...

journal_title：Biotechnology and bioengineering

authors： Wang ZG,Ke BB,Xu ZK

更新日期：2007-07-01 00:00:00

abstract：:Bacterial profile modification (BPM), a form of tertiary oil recovery, diverts water from the water-flooded high-permeability zone into the oil-bearing low-permeability zone. During field use, exopolymer-producing bacteria plug the high-permeability zone only in the immediate vicinity of the injection point (the near-...

journal_title：Biotechnology and bioengineering

authors： Wolf BF,Fogler HS

更新日期：2005-01-05 00:00:00

abstract：:Surface modified bioactive glass with surface properties akin to those of the bone mineral phase is an attractive candidate for use as a microcarrier material for 3-D growth of bone-like tissue in rotating wall vessel bioreactors (RWVs). The critical surface properties of this material are the result of reaction in so...

journal_title：Biotechnology and bioengineering

authors： Radin S,Ducheyne P,Ayyaswamy PS,Gao H

更新日期：2001-11-05 00:00:00

abstract：:High throughput pretreatment (HTPH) and enzymatic hydrolysis systems are now vital for screening large numbers of biomass samples to investigate biomass recalcitrance over various pretreatment and enzymatic hydrolysis conditions. Although hydrothermal pretreatment is currently being employed in most high throughput ap...

journal_title：Biotechnology and bioengineering

authors： Li H,Gao X,Demartini JD,Kumar R,Wyman CE

更新日期：2013-11-01 00:00:00

abstract：:The microscopic morphology of Trichoderma reesei QM 9414, growing in submerged culture, was studied by image analysis. The morphology was characterized by the total hyphal length, the total number of tips, the number of actively growing tips, and the length of the main hypha. To describe the growth of a single myceliu...

journal_title：Biotechnology and bioengineering

authors： Lejeune R,Nielsen J,Baron GV

更新日期：1995-09-05 00:00:00

abstract：:Polymers produced by horseradish-peroxidase-catalyzed coupling of phenols have been explored as potential substitutes for phenol-formaldehyde resins. To overcome low substrate solubilities and product molecular weights in water, enzymatic polymerizations in aqueous-organic mixtures have been examined. Peroxidase vigor...

journal_title：Biotechnology and bioengineering

authors： Dordick JS,Marletta MA,Klibanov AM

更新日期：1987-07-01 00:00:00

abstract：:Mass transfer is known to play a critical role in bioprocess performance and henceforth monitoring dissolved O2 (DO) and dissolved CO2 (dCO2 ) is of paramount importance. At bioreactor level these parameters can be monitored online and can be controlled by sparging air/oxygen or stirrer speed. However, traditional sma...

journal_title：Biotechnology and bioengineering

authors： Chopda VR,Holzberg T,Ge X,Folio B,Wong L,Tolosa M,Kostov Y,Tolosa L,Rao G

更新日期：2020-04-01 00:00:00

abstract：:CO(2) partial pressure (pCO(2)) in industrial cell culture reactors may reach 150-200 mm Hg, which can significantly inhibit cell growth and recombinant protein production. The inhibitory effects of elevated pCO(2) at constant pH are due to a combination of the increases in pCO(2) and [HCO(-) (3)], per se, and the ass...

journal_title：Biotechnology and bioengineering

authors： deZengotita VM,Schmelzer AE,Miller WM

更新日期：2002-02-15 00:00:00

abstract：:Osteochondral tissue engineering aims to regenerate functional tissue-mimicking physiological properties of injured cartilage and its subchondral bone. Given the distinct structural and biochemical difference between bone and cartilage, bilayered scaffolds, and bioreactors are commonly employed. We present an osteocho...

journal_title：Biotechnology and bioengineering

authors： Xue R,Chung B,Tamaddon M,Carr J,Liu C,Cartmell SH

更新日期：2019-11-01 00:00:00