Importance of spore mutants for fed-batch and continuous fermentation of Bacillus subtilis.

abstract：:The emissions of nitrous oxide (N(2)O) and nitric oxide (NO) from biological nitrogen removal (BNR) operations via nitrification and denitrification is gaining increased prominence. While many factors relevant to the operation of denitrifying reactors can influence N(2)O and NO emissions from them, the role of differe...

journal_title：Biotechnology and bioengineering

authors： Lu H,Chandran K

更新日期：2010-06-15 00:00:00

abstract：:There has been much effort exerted to reduce one carbon (C1) gas emission to address climate change. As one promising way to more conveniently utilize C1 gas, several technologies have been developed to convert C1 gas into useful chemicals such as formic acid (FA). In this study, systems metabolic engineering was util...

journal_title：Biotechnology and bioengineering

authors： Ahn JH,Bang J,Kim WJ,Lee SY

更新日期：2017-12-01 00:00:00

abstract：:Many sites of environmental concern contain groundwater contaminated with nonaqueous phase liquids (NAPL). In such sites interfacial processes may affect both the equilibrium and kinetic behavior of the system. In particular, insoluble hydrocarbon partitioning and microbial biodegradation of insoluble hydrocarbon are ...

journal_title：Biotechnology and bioengineering

authors： Sekelsky AM,Shreve GS

更新日期：1999-05-20 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：:Pretreatment of sugar cane bagasse is essential for a simultaneous saccharification and fermentation (SSF) process which uses recombinant Klebsiella oxytoca strain P2 and Genencor Spezyme CE. Strain P2 has been genetically engineered to express Zymomonas mobilis genes encoding the ethanol pathway and retains the nativ...

journal_title：Biotechnology and bioengineering

authors： Doran JB,Aldrich HC,Ingram LO

更新日期：1994-06-20 00:00:00

abstract：:Uranium competitive uptake experiments by Rhizopus arrhizus were carried out at three different solution pH levels and in the presence of different concentrations of competing aluminum ions in order to examine the competing ion effect. The coion effect became more pronounced as the coion concentration in solution and ...

journal_title：Biotechnology and bioengineering

authors： Tsezos M,Georgousis Z,Remoudaki E

更新日期：1997-07-05 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：:The inhibition of the maximum specific growth and fermentation rate of Zymomonas mobilis by ethanol was studied in turbidostat cultures at constant and stepwise changed ethanol concentrations. Up to 50 g/L ethanol, the inhibition kinetics can be approximated by a linear relationship between the specific growth rate an...

journal_title：Biotechnology and bioengineering

authors： Jöbses IM,Roels JA

更新日期：1986-04-01 00:00:00

abstract：:We have produced Bioglass coatings for Orthopedic implants by using a novel coating technique, CoBlast. The two resultant surfaces, designated BG and hydroxyapatite (HA)/BG, were compared with their HA counterpart, OsteoZip in terms of osteoblastic cell attachment, adhesion, proliferation, differentiation, and growth ...

journal_title：Biotechnology and bioengineering

authors： Tan F,Naciri M,Al-Rubeai M

更新日期：2011-02-01 00:00:00

abstract：:The marine diatom Cyclotella cryptica was grown over a period of 13 months in a 48-m(2) shallow outdoor flume. The use of foil arrays at intervals of 1.2 m to effect systematic vertical mixing in the flume was found to significantly enhance microalgal production (p = 0.006). Average photosynthetic efficiencies (based ...

journal_title：Biotechnology and bioengineering

authors： Laws EA,Taguchi S,Hirata J,Pang L

更新日期：1988-07-05 00:00:00

abstract：:MicroRNAs are small non-coding RNAs that play a critical role in post-transcriptional control of gene expression. Recent publications of genomic sequencing data from the Chinese Hamster (CGR) and Chinese hamster ovary (CHO) cells provide new tools for the discovery of novel miRNAs in this important production system. ...

journal_title：Biotechnology and bioengineering

authors： Diendorfer AB,Hackl M,Klanert G,Jadhav V,Reithofer M,Stiefel F,Hesse F,Grillari J,Borth N

更新日期：2015-07-01 00:00:00

abstract：:To manufacture biotechnology products, mammalian or bacterial cells are engineered for the production of recombinant therapeutic human proteins including monoclonal antibodies. Host cells synthesize an entire repertoire of proteins which are essential for their own function and survival. Biotechnology manufacturing pr...

journal_title：Biotechnology and bioengineering

authors： de Zafra CL,Quarmby V,Francissen K,Vanderlaan M,Zhu-Shimoni J

更新日期：2015-11-01 00:00:00

abstract：:A technology has been developed to achieve optimal attachment of adhesion-independent lymphocytes to microcarrier beads. The activation of T-lymphocytes by concanavalin A was tested under microgravity conditions in an experiment carried out in space during the first Spacelab Life Science Mission. Activation, measure...

journal_title：Biotechnology and bioengineering

authors： Bechler B,Cogoli A,Cogoli-Greuter M,Müller O,Hunzinger E,Criswell SB

更新日期：1992-10-20 00:00:00

abstract：:Molecular chaperones in aqueous-organic mixtures can broaden the utility of biocatalysis by stabilizing enzymes in denaturing conditions. We have designed a self-renaturing enzyme-chaperone chimera consisting of penicillin amidase and a thermophilic chaperonin that functions in aqueous-organic mixtures. The flexible l...

journal_title：Biotechnology and bioengineering

authors： Bergeron LM,Gomez L,Whitehead TA,Clark DS

更新日期：2009-04-01 00:00:00

abstract：:10-Deacetylabaccatin III (10 DAB), an important precursor for paclitaxel semisynthesis, is enhanced in yew extracts using C10-deacetylase and C13-deacylase enzymes.(4) C10-deacetylase is an intracellular enzyme produced by the fermentation of a soil microorganism, Nocardioides luteus (SC 13912). During the fermentatio...

journal_title：Biotechnology and bioengineering

authors： Nanduri VB,Hanson RL,Laporte TL,Ko RY,Patel RN,Szarka LJ

更新日期：1995-12-05 00:00:00

abstract：:After injury to the central nervous system, a glial scar develops that physically and biochemically inhibits axon growth. In the scar, activated astrocytes secrete inhibitory extracellular matrix, of which chondroitin sulfate proteoglycans (CSPGs) are considered the major inhibitory component. An inhibitory interface ...

journal_title：Biotechnology and bioengineering

authors： Tuinstra HM,Ducommun MM,Briley WE,Shea LD

更新日期：2013-03-01 00:00:00

abstract：:The specific monoclonal antibody productivity (q(Mab)) of a murine hybridoma (CC9C10) increased with incubation temperature in the range 33 degrees C to 39 degrees C. q(Mab) was constant at each temperature and was independent of the phase of culture. The q(Mab) increased 97% at 39 degrees C and decreased by 21% at 33...

journal_title：Biotechnology and bioengineering

authors： Barnabé N,Butler M

更新日期：1994-11-20 00:00:00

abstract：:This article compares the processes for wheat straw lignocellulose fractionation by percolation, counter-current progressing batch percolation and batch reaction at low NaOH-loadings (3-6% of DM). The flow-through processes were found to improve delignification and subsequent enzymatic saccharification, reduce NaOH-co...

journal_title：Biotechnology and bioengineering

authors： Pihlajaniemi V,Sipponen MH,Pastinen O,Nyyssölä A,Laakso S

更新日期：2016-12-01 00:00:00

abstract：:Poly lactic acid (PLA) based plastics is renewable, bio-based, and biodegradable. Although present day PLA is composed of mainly L-LA, an L- and D- LA copolymer is expected to improve the quality of PLA and expand its use. To increase the number of thermotolerant microbial biocatalysts that produce D-LA, a derivative ...

journal_title：Biotechnology and bioengineering

authors： Awasthi D,Wang L,Rhee MS,Wang Q,Chauliac D,Ingram LO,Shanmugam KT

更新日期：2018-02-01 00:00:00

abstract：:Highly substituted polychlorinated biphenyls (PCBs) are known to be very resistant to aerobic biodegradation, particularly the initial attack by biphenyl dioxygenase. Functional evolution of the substrate specificity of biphenyl dioxygenase was demonstrated by DNA shuffling and staggered extension process (StEP) of th...

journal_title：Biotechnology and bioengineering

authors： Brühlmann F,Chen W

更新日期：1999-06-05 00:00:00

abstract：:Substrate transfer rates from organic to aqueous phases were measured in the presence and absence of biocatalyst in the reaction medium, using modified Lewis cells. These measurements, in combination with intrinsic aqueous phase biocatalytic reaction kinetics, were used to confirm that benzyl acetate hydrolysis by pig...

journal_title：Biotechnology and bioengineering

authors： Woodley JM,Brazier AJ,Lilly MD

更新日期：1991-01-20 00:00:00

abstract：:This article develops and utilizes an in situ technique to estimate the Monod half-maximum rate concentration, K(s) and the maximum specific utilization rate constant, k, for biofilms. The technique employs a curve-matching method with kinetic results from several short-term experiments with completely mixed biofilm r...

journal_title：Biotechnology and bioengineering

authors： Rittmann BE,Crawford L,Tuck CK,Namkung E

更新日期：1986-11-01 00:00:00

abstract：:Three-dimensional cell culture models, such as spheroids, can be used in the process of the development of new anticancer agents because they are able to closely mimic the main features of human solid tumors, namely their structural organization, cellular layered assembling, hypoxia, and nutrient gradients. These prop...

journal_title：Biotechnology and bioengineering

authors： Nunes AS,Barros AS,Costa EC,Moreira AF,Correia IJ

更新日期：2019-01-01 00:00:00

abstract：:Calculation of kinetic constants of an enzymatic reaction in organic solvents requires knowledge of the functional active-site concentration in organic solvents, and this can be significantly different than that in water. An experimental method for active-site titration of serine proteases in organic media has been de...

journal_title：Biotechnology and bioengineering

authors： Wangikar PP,Carmichael D,Clark DS,Dordick JS

更新日期：1996-05-05 00:00:00

abstract：:The treatment of meta- and para-nitrobenzoic acid in an industrial wastestream by Comamonas sp. JS46 and Comamonas sp. JS47 is investigated. The most important feature of the wastestream is the constantly changing concentration ratio of the two isomers. The most extreme occurrence is considered here: the complete chan...

journal_title：Biotechnology and bioengineering

authors： Goodall JL,Thomas SM,Spain JC,Peretti SW

更新日期：1998-07-05 00:00:00

abstract：:In this study, omics-based analysis tools were used to explore the effect of glucose starvation and culture duration on monoclonal antibody (mAb) production in fed-batch CHO cell culture to gain better insight into how these parameters can be controlled to ensure optimal mAb productivity and quality. Titer and N-glyco...

journal_title：Biotechnology and bioengineering

authors： Fan Y,Jimenez Del Val I,Müller C,Lund AM,Sen JW,Rasmussen SK,Kontoravdi C,Baycin-Hizal D,Betenbaugh MJ,Weilguny D,Andersen MR

更新日期：2015-10-01 00:00:00

abstract：:The characteristics of horseradish peroxidase (HRP) immobilized onto Sepharose by a photochemical-initiated graft copolymerization are presented. Active copolymers were synthesized using different amounts of glycidylmethacrylate (GMA), bisacryloylpiperazine (BAP), or 1,3,5-hexhydrotriacryloyl-(s)-triazine (HTsT) as fu...

journal_title：Biotechnology and bioengineering

authors： Cremonesi P,D'Angiuro L

更新日期：1983-03-01 00:00:00

abstract：:In this study it is reported the operation of a horizontal-flow anaerobic immobilized biomass (HAIB) reactor under sulfate-reducing condition which was also exposed to different amounts of ethanol and toluene. The system was inoculated with sludge taken from up-flow anaerobic sludge blanket (UASB) reactors treating re...

journal_title：Biotechnology and bioengineering

authors： Cattony EB,Chinalia FA,Ribeiro R,Zaiat M,Foresti E,Varesche MB

更新日期：2005-07-20 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：: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