نتایج جستجو برای: loop bioreactors

تعداد نتایج: 132938  

2015

Anaerobic digestion can be used to degrade food waste and recover energy. Methane is a biogas that can be efficiently converted in electricity. Organic loading rate, temperature, time, pH, carbon to nitrogen ratio are important factors to be operated in the bioreactors and still are challenges in this process to increase biogas production. It has been reviewed the single phase and two-stage bio...

Journal: :Advances in biochemical engineering/biotechnology 2014
Christian Löffelholz Stephan C Kaiser Matthias Kraume Regine Eibl Dieter Eibl

During the past 10 years, single-use bioreactors have been well accepted in modern biopharmaceutical production processes targeting high-value products. Up to now, such processes have mainly been small- or medium-scale mammalian cell culture-based seed inoculum, vaccine or antibody productions. However, recently first attempts have been made to modify existing single-use bioreactors for the cul...

2013
Christian Kaisermayer Jianjun Yang

Introduction A perfusion-based process was developed to increase the split ratio during the scale-up of CHO-STM cell cultures. Fedbatch cultures were inoculated with cells propagated in either batch or perfusion cultures. All cultures were grown in disposable CellbagTM bioreactors using the WAVE Bioreactor system. Cell concentrations of 4.8 × 10 cells/mL were achieved in the perfusion culture, ...

2013
Christian Kaisermayer Jianjun Yang

Introduction A perfusion-based process was developed to increase the split ratio during the scale-up of CHO-STM cell cultures. Fedbatch cultures were inoculated with cells propagated in either batch or perfusion cultures. All cultures were grown in disposable CellbagTM bioreactors using the WAVE Bioreactor system. Cell concentrations of 4.8 × 10 cells/mL were achieved in the perfusion culture, ...

Journal: :Biotechnology and Genetic Engineering Reviews 1988

Journal: :Acta Agraria Debreceniensis 2005

Journal: :Current opinion in biotechnology 1997
Deshusses Chen Mulchandani Dunn

Recent papers have described new bioreactor designs. Most innovations addressed either oxygen transfer, shear induced by stirring, control of water activity in organic phase systems or waste biotreatment. Innovations made during the past year were reported in mainly three areas: bioreactor designs for increases in oxygen transfer and decreases in shear stress; bioreactors for two-phase reaction...

2012
Robert P.T. Somerville Mark E. Dudley

Adoptive cell transfer immunotherapy against melanoma is highly effective. However, this therapy has seen limited dissemination, mainly due to the complexity and costs of cell expansion protocols. Two bioreactors have recently been described that simplify and streamline the production of individualized cell therapies. Such bioreactors might increase the number of patients that get access to thi...

2001
P. I. Lelkes N. Akhtar E. Lelkes L. Maltz R. Arthur J. Wiederholt

The low-shear, microgravity-simulating cell culture environment in Rotating Wall Vessel (RWV) Bioreactors RWV Bioreactors is well suited for generating differentiated 3-D tissue constructs (organoids). Biochemical, immunological and molecular biological techniques, including cDNA arrays, were used to analyze signal transduction, catecholamine contents, and gene expression in 3-D tissue-like con...

2011
Eric S. Langer

S ingle-use bioprocessing equipment has come to thoroughly dominate precommercial biopharmaceutical production in only a decade. Yet even with this breakthrough, performance and cost pressures on biopharmaceutical facilities continue to grow. Demands for greater productivity, more efficiency, and lower costs are resulting in an unrelenting push for upstream improvements. Some people in the indu...

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