Immobilized Cells

Front Cover
Rene H. Wijffels
Springer Science & Business Media, 2001 - Medical - 261 pages
Immobilized cells have been studied widely in the last few decades, and an enormous number of papers have been published on this topic. For many processes the complex physiology in a heterogeneous environment is now becoming clear. In addition it has been shown that in many processes it is more efficient to use immobilized cells than suspended cells. The contributions in this volume by scientists from various disciplines in academia, industry and research institutes cover the path from basic physiological research to actual application. One of the goals was to extract guidelines for characterizing immobilized cells in view of process design and application. It is important to recognize that research on immobilized metabolizing cells should eventually lead, whenever possible, to successful implementation of such catalysts in industrial processes, and so one of the aims of using these guidelines is to ensure that research is effective in achieving this objective. A structure was chosen in which general aspects of immobilization as well as kinetics and engineering aspects were covered. Besides laboratory methods, some simple calculation procedures have been presented in this lab manual. The combination of the practical methods with the calculations provide a tool for research with immobilized cells. Finally, the manual concludes with some recent promising and practical cases of immobilized cells as examples of potential applications.
 

Contents

Characterization of Immobilized Cells Introduction
3
Description of the Support Material
8
Description of the Immobilization Procedures
17
Ionic Gelation Alginate Beads
22
Thermal Gelation KCarrageenan Beads
25
Ionic Polymer Coating Chitosane on Alginate Beads
27
Coating by Transacylation Reaction
28
Polyelectrolyte Complex Membrane SulfoethylcellulosePolydiallyldimethyl Ammonium Chloride
29
Immobilization at Large Scale by Dispersion
141
Jet Breaking Methods
142
Lentikats
144
Rotating Devices
146
Emulsification Using Static Mixer
148
Immobilization at Large Scale with the Resonance Nozzle Technique
152
External Mass Transfer
164
Liquid Fluidization of GelBead Particles
177

Measurement of Density Particle Size and Shape of Support
33
Mechanical Stability of the Support
38
Diffusion Coefficients of Metabolites
46
Preparation of the Membrane
50
Diffusion Experiments
53
StepResponse Method Utilizing MicroElectrodes
56
Quantity of Biomass Immobilized Determination of Biomass Concentration
67
Kinetics of the Suspended Cells
76
Diffusion Limitation
79
MicroElectrodes
87
Manufacturing of O₂ Microsensors
89
Measurements
94
Biomass Gradients
103
NMR and Immobilized Cells
125
Gradients in Liquid Gas or Solid Fractions
184
Support Material Stability at the Process Conditions Used
193
Immobilized Cells in Food Technology Storage Stability and Sensitivity to Contamination
201
Immobilized Cells in Bioremediation
215
Alginate Encapsulation
216
Carrageenan Encapsulation
219
CoImmobilization with Adjuncts
221
Immobilization with Synthetic Polymers
223
Microencapsulation
227
Monitoring Microbial inoculum in the Environment
232
Plasmid Stability in Immobilized Cells
237
Immobilization for HighThroughput Screening
249
Subject Index
261
Copyright

Other editions - View all

Common terms and phrases