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Experimental and modeling study of diauxic lag in bacteria switching between electron acceptors

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Published .
Written in English


Book details:

Edition Notes

Statementby Pi-Hsin Liu
The Physical Object
Paginationvi, 71 leaves :
Number of Pages71
ID Numbers
Open LibraryOL25920843M
OCLC/WorldCa39985105

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  A simplified model of the diauxic growth of bacteria switching between electron acceptors has been developed. Based on the application of this model to new experimental data generated as part of this study, as well as data from the literature, the Cited by: A procedure was developed to characterize diauxic lag of bacteria switching between electron acceptors in continuous culture. In this procedure, a virtual batch growth curve is developed by. A simplified model of the diauxic growth of bacteria switching between electron acceptors has been developed. Based on the application of this model to new experimental data generated as part of this study, as well as data from the literature, the following conclusions may be drawn. A procedure was developed to characterize diauxic lag of bacteria switching between electron acceptors in continuous culture. experimental data. The proposed model is able to predict.

Diauxic Lag of Bacteria Switching between Electron Acceptors Diauxic lag of bacteria switching between electron acceptors was first reported by Kodama et al. (). The authors examined the growth of Pseudomonas stutzeri in the presence of various concentrations of nitrate. The authors reported that the initial growth. Modeling and estimating bacterial lag phase Peter Olofsson∗ and Xin Ma† Janu Abstract A branching process model of a bacterial population with initial lag phase is developed. Approximations are established in order to fa-cilitate parameter estimation. The validity of approximations and estimation procedures is tested with. A procedure was developed to characterize diauxic lag of bacteria switching between electron acceptors in continuous culture. Experimental and modeling study of diauxic lag ofPseudomonas. Pi‐Hsin Liu, Spyros A. Svoronos and Ben Koopman, Experimental and modeling study of diauxic lag of Pseudomonas denitrificans switching from oxic to anoxic conditions, Biotechnology and Bioengineering, 60, 6, (), ().

  The diauxic lag which followed the final oxic/anoxic switch in the present study was 15 h – substantially longer than the diauxic lags of and h measured after steady-state oxic periods. The final diauxie demonstrated that P. denitrificans did not lose their ability to re-synthesize denitrifying enzymes, but that the 8 h anoxic phase.   We studied the performance of a pilot-scale membrane biofilm reactor (MBfR) treating groundwater containing four electron acceptors: nitrate (NO 3 −), perchlorate (ClO 4 −), sulfate (SO 4 2 −), and oxygen (O 2).The treatment goal was to remove ClO 4 − from ∼ μg/L to less than 6 μg/L. The pilot system was operated as two MBfRs in series, and the positions of the lead and lag.   1. Introduction. When microbial cells are grown in a batch culture containing a mixture of two carbon sources, they often exhibit diauxic growth (Monod, ).This phenomenon is characterized by the appearance of two exponential growth phases separated by a lag phase called diauxic most well-known example of the diauxie is the growth of Escherichia coli on a mixture of glucose and . This occurs when bacteria switch from oxygen to nitrate as electron acceptors and it corresponds to the period during which the cell has to produce the necessary enzymes to respire on the less preferred substrate. Monod () was first to characterize diauxic lag due to change in electron donors.