Article (Scientific journals)
Tools for the determination of population heterogeneity caused by inhomogeneous cultivation conditions
Lemoine, A.; Delvigne, Frank; Bockisch, A. et al.
2017In Journal of Biotechnology, 251, p. 84-93
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Keywords :
Biological noise; Gradients; Microbial population; Population heterogeneity; Process analytical tools; Batch data processing; Optimization; Process control; Microbial populations; Process analytical tool; Cultivation; Review; Bacteriological Techniques; Bioreactors; Flow Cytometry
Abstract :
[en] Population heterogeneity among a microbial culture can occur in various stages of a bioprocess. When a nutrient-limited fed-batch process is applied in the large scale, gradient formation (e.g. at the substrate concentration or the pH-value) can have a tremendous impact on the process performance. It might also have an impact on population heterogeneity, as the cells are opposed to stressful conditions that is an oscillating environment, when they pass the different zones evolved in the liquid phase. Nevertheless, the question whether these conditions support heterogeneity of a culture has not been clearly answered so far. Furthermore, if such a heterogeneity affects product formation, the usual analysis tools, which do not rely on a single-cell basis, certainly do not gain sufficiently suitable information for process optimization. This overview on the one hand provides information about the contribution of an oscillating environment to the formation of heterogeneities within a population and on the other hand a summary of tools, which can be used to investigate physiologic and morphologic heterogeneity during process development, scale up and production. If these techniques are considered, the identification of targets for accelerated process optimization on a single-cell basis becomes easier and faster. © 2017 Elsevier B.V.
Disciplines :
Biotechnology
Author, co-author :
Lemoine, A.;  Chair of Bioprocess Engineering, TU Berlin, Germany
Delvigne, Frank  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Bockisch, A.;  Chair of Bioprocess Engineering, TU Berlin, Germany
Neubauer, P.;  Chair of Bioprocess Engineering, TU Berlin, Germany
Junne, S.;  Chair of Bioprocess Engineering, TU Berlin, Germany
Language :
English
Title :
Tools for the determination of population heterogeneity caused by inhomogeneous cultivation conditions
Publication date :
2017
Journal title :
Journal of Biotechnology
ISSN :
0168-1656
eISSN :
1873-4863
Publisher :
Elsevier B.V.
Volume :
251
Pages :
84-93
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 July 2018

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