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Engineering Principles in Biotechnology


Engineering Principles in Biotechnology


1. Aufl.

von: Wei-Shou Hu

100,99 €

Verlag: Wiley
Format: PDF
Veröffentl.: 11.09.2017
ISBN/EAN: 9781119159032
Sprache: englisch
Anzahl Seiten: 504

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Beschreibungen

<p>This book is a short introduction to the engineering principles of harnessing the vast potential of microorganisms, and animal and plant cells in making biochemical products. It was written for scientists who have no background in engineering, and for engineers with minimal background in biology. The overall subject dealt with is process. But the coverage goes beyond the process of biomanufacturing in the bioreactor, and extends to the factory of cell’s biosynthetic machinery.</p> <p>Starting with an overview of biotechnology and organism, engineers are eased into biochemical reactions and life scientists are exposed to the technology of production using cells. Subsequent chapters allow engineers to be acquainted with biochemical pathways, while life scientist learn about stoichiometric and kinetic principles of reactions and cell growth. This leads to the coverage of reactors, oxygen transfer and scale up. Following three chapters on biomanufacturing of current and future importance, i.e. cell culture, stem cells and synthetic biology, the topic switches to product purification, first with a conceptual coverage of operations used in bioseparation, and then a more detailed analysis to provide a conceptual understanding of chromatography, the modern workhorse of bioseparation.</p> <p>Drawing on principles from engineering and life sciences, this book is for practitioners in biotechnology and bioengineering. The author has used the book for a course for advanced students in both engineering and life sciences. To this end, problems are provided at the end of each chapter.</p>
<p>Preface xvii</p> <p>About the CompanionWebsite xix</p> <p><b>1 An Overview of Bioprocess Technology and Biochemical Engineering 1</b></p> <p>1.1 A Brief History of Biotechnology and Biochemical Engineering 1</p> <p>1.1.1 Classical Biotechnology 1</p> <p>1.1.2 Recombinant DNA 4</p> <p>1.1.3 A Typical Bioprocess 6</p> <p>1.1.4 Biochemical Engineering and Bioprocess Technology 8</p> <p>1.2 Industrial Organisms 10</p> <p>1.2.1 Prokaryotes 12</p> <p>1.2.1.1 Eubacteria and Archaea 12</p> <p>1.2.2 Eukaryotic Microorganisms 12</p> <p>1.2.2.1 Fungi 13</p> <p>1.2.2.2 Algae 13</p> <p>1.2.3 Multicellular Organisms andTheir Cells 13</p> <p>1.2.3.1 Insect Cells 13</p> <p>1.2.3.2 Plant Cells, Tissues, and Organs 13</p> <p>1.2.3.3 Animal Cells, Tissues, and Organs 14</p> <p>1.2.4 Transgenic Plants and Animals 14</p> <p>1.3 Biotechnological Products 15</p> <p>1.3.1 Metabolic Process 15</p> <p>1.3.2 Metabolites 18</p> <p>1.3.3 Cells, Tissues, and Their Components 19</p> <p>1.3.3.1 Viruses 20</p> <p>1.3.4 Secreted Enzymes and Other Biopolymers 20</p> <p>1.3.5 Recombinant DNA Products 20</p> <p>1.3.5.1 Heterologous rDNA Proteins 20</p> <p>1.3.6 Metabolic Engineering and Synthetic Pathways 22</p> <p>1.4 Technology Life Cycle, and Genomics- and Stem Cell-Based New Biotechnology 23</p> <p>1.4.1 The Story of Penicillin and the Life Cycle of Technology 23</p> <p>1.4.2 Genomics, Stem Cells, and Transformative Technologies 25</p> <p>Further Reading 26</p> <p>Problems 26</p> <p><b>2 An Introduction to Industrial Microbiology and Cell Biotechnology 29</b></p> <p>2.1 Universal Features of Cells 29</p> <p>2.2 Cell Membranes, Barriers, and Transporters 30</p> <p>2.3 Energy Sources for Cells 31</p> <p>2.3.1 Classification of Microorganisms According toTheir Energy Source 32</p> <p>2.4 Material and Informational Foundation of Living Systems 34</p> <p>2.4.1 All Cells Use the Same Molecular Building Blocks 34</p> <p>2.4.2 Genes 34</p> <p>2.4.3 Genetic Information Processing 36</p> <p>2.5 Cells of Industrial Importance 36</p> <p>2.5.1 Prokaryotes 38</p> <p>2.5.2 Eubacteria 38</p> <p>2.5.2.1 CellWall and Cell Membrane 38</p> <p>2.5.2.2 Membrane and Energy Transformation 40</p> <p>2.5.2.3 Differentiation 41</p> <p>2.5.3 Archaea 42</p> <p>2.5.4 Eukaryotes 43</p> <p>2.5.4.1 The Nucleus 44</p> <p>2.5.4.2 Mitochondrion 45</p> <p>2.5.4.3 Endoplasmic Reticulum and Golgi Apparatus 46</p> <p>2.5.4.4 Other Organelles 47</p> <p>2.5.4.5 Cytosol 48</p> <p>2.6 Cells Derived from Multicellular Organisms 49</p> <p>2.7 Concluding Remarks 50</p> <p>Further Reading 50</p> <p>Problems 50</p> <p><b>3 Stoichiometry of Biochemical Reactions and Cell Growth 53</b></p> <p>3.1 Stoichiometry of Biochemical Reactions 53</p> <p>3.1.1 Metabolic Flux at Steady State 58</p> <p>3.1.1.1 NAD/NADH Balance in Glycolysis 59</p> <p>3.1.1.2 OxidativeMetabolism and NADH 60</p> <p>3.1.2 Maximum Conversion of a Metabolic Product 63</p> <p>3.2 Stoichiometry for Cell Growth 66</p> <p>3.2.1 Cell Composition and Material Flow to Make Cell Mass 66</p> <p>3.2.1.1 Composition and Chemical Formula of Cells 66</p> <p>3.2.1.2 Material Flow for Biomass Formation 69</p> <p>3.2.2 Stoichiometric Equation for Cell Growth 70</p> <p>3.2.2.1 Yield Coefficient 71</p> <p>3.3 Hypothetical Partition of a Substrate for Biomass and Product Formation 73</p> <p>3.4 Metabolic Flux Analysis 74</p> <p>3.4.1 Analysis of a Chemical Reaction System 74</p> <p>3.4.1.1 Setting Up Material Balance Equations 74</p> <p>3.4.1.2 Quasi–Steady State 76</p> <p>3.4.1.3 Stoichiometric Matrix, Flux Vectors, and Solution 76</p> <p>3.4.2 Analysis of Fluxes in a Bioreaction Network 77</p> <p>3.4.3 Metabolic Flux Analysis on a Cellular System 81</p> <p>3.4.3.1 Selecting Reactions for Analysis 81</p> <p>3.4.3.2 Compartmentalization 83</p> <p>3.4.3.3 Biomass 83</p> <p>3.4.3.4 Limitations on Accounting of Materials 84</p> <p>3.4.3.5 Solution and Analysis 84</p> <p>3.5 Concluding Remarks 85</p> <p>Further Reading 85</p> <p>Nomenclature 86</p> <p>Problems 86</p> <p><b>4 Kinetics of Biochemical Reactions 95</b></p> <p>4.1 Enzymes and Biochemical Reactions 95</p> <p>4.2 Mechanics of Enzyme Reactions 96</p> <p>4.3 Michaelis–Menten Kinetics 98</p> <p>4.4 Determining the Value of Kinetic Parameters 101</p> <p>4.5 Other Kinetic Expressions 104</p> <p>4.6 Inhibition of Enzymatic Reactions 106</p> <p>4.7 Biochemical Pathways 108</p> <p>4.7.1 Kinetic Representation of a Reaction Pathway 108</p> <p>4.7.2 Linearity of Fluxes in Biochemical Pathways 110</p> <p>4.8 Reaction Network 114</p> <p>4.9 Regulation of Reaction Rates 114</p> <p>4.9.1 Flux Modulation by Km 114</p> <p>4.9.2 Allosteric Regulation of Enzyme Activities 115</p> <p>4.9.3 Regulation at Transcriptional and Posttranslational Levels 117</p> <p>4.9.4 Modulation of Resource Distribution through Reversible Reactions 118</p> <p>4.10 Transport across Membrane and Transporters 120</p> <p>4.10.1 Transport across the Cell Membrane 120</p> <p>4.10.2 Transport of Electrolytes 121</p> <p>4.10.3 Transport of Charged Molecules across Membrane 122</p> <p>4.10.4 Types of Transporters 123</p> <p>4.10.5 Kinetics of a Facilitated Transporter 124</p> <p>4.11 Kinetics of Binding Reactions 126</p> <p>4.11.1 Binding Reactions in Biological Systems 126</p> <p>4.11.2 Dissociation Constant 127</p> <p>4.11.3 Saturation Kinetics 128</p> <p>4.11.4 Operator Binding and Transcriptional Regulation 129</p> <p>4.11.5 Kinetics of Transcription and Translation 131</p> <p>4.12 Concluding Remarks 135</p> <p>Further Reading 136</p> <p>Nomenclature 136</p> <p>Problems 138</p> <p><b>5 Kinetics of Cell Growth Processes 145</b></p> <p>5.1 Cell Growth and Growth Kinetics 145</p> <p>5.2 Population Distribution 148</p> <p>5.3 Description of Growth Rate 149</p> <p>5.4 Growth Stage in a Culture 150</p> <p>5.5 Quantitative Description of Growth Kinetics 151</p> <p>5.5.1 Kinetic Description of Substrate Utilization 153</p> <p>5.5.2 Using the Monod Model to Describe Growth in Culture 155</p> <p>5.6 Optimal Growth 156</p> <p>5.7 Product Formation 158</p> <p>5.8 Anchorage-Dependent Vertebrate Cell Growth 159</p> <p>5.9 Other Types of Growth Kinetics 161</p> <p>5.10 Kinetic Characterization of Biochemical Processes 162</p> <p>5.11 Applications of a Growth Model 163</p> <p>5.12 The Physiological State of Cells 164</p> <p>5.12.1 MultiscaleModel Linking Biotic and Abiotic Phases 166</p> <p>5.13 Kinetics of Cell Death 168</p> <p>5.14 Cell Death and the Sterilization of Medium 169</p> <p>5.15 Concluding Remarks 171</p> <p>Further Reading 172</p> <p>Nomenclature 172</p> <p>Problems 173</p> <p><b>6 Kinetics of Continuous Culture 183</b></p> <p>6.1 Introduction 183</p> <p>6.2 Kinetic Description of a Continuous Culture 185</p> <p>6.2.1 Balance Equations for Continuous Culture 185</p> <p>6.2.2 Steady-State Behavior of a Continuous Culture 187</p> <p>6.2.2.1 Monod Kinetics 187</p> <p>6.2.2.2 Steady-State Concentration Profiles 187</p> <p>6.2.2.3 Washout 189</p> <p>6.2.3 Productivity in Continuous Culture 190</p> <p>6.3 Continuous Culture with Cell Recycling 193</p> <p>6.3.1 Increased Productivity with Cell Recycling 193</p> <p>6.3.2 Applications of Continuous Culture with Cell Recycling 196</p> <p>6.3.2.1 Low Substrate Levels in the Feed 196</p> <p>6.3.2.2 Low Residual Substrate Concentration 197</p> <p>6.3.2.3 Labile Product 197</p> <p>6.3.2.4 Selective Enrichment of Cell Subpopulation 197</p> <p>6.3.2.5 High-Intensity Mammalian Cell Culture 197</p> <p>6.4 Specialty Continuous Cultures 199</p> <p>6.4.1 Multiple-Stage Continuous Culture 199</p> <p>6.4.2 Immobilized Cell Culture System 200</p> <p>6.4.3 Continuous Culture with Mixed Populations 201</p> <p>6.5 Transient Response of a Continuous Culture 202</p> <p>6.5.1 Pulse Increase at the Substrate Level 203</p> <p>6.5.2 Step Change in Feed Concentration 204</p> <p>6.6 Concluding Remarks 205</p> <p>Further Reading 205</p> <p>Nomenclature 205</p> <p>Problems 206</p> <p><b>7 Bioreactor Kinetics 217</b></p> <p>7.1 Bioreactors 217</p> <p>7.2 Basic Types of Bioreactors 218</p> <p>7.2.1 Flow Characteristics in Idealized Stirred-Tank (Well-Mixed) and Tubular (Plug Flow) Reactors 219</p> <p>7.2.2 Reaction in an Idealized CSTR 220</p> <p>7.2.3 Reaction in an Idealized PFR 222</p> <p>7.2.4 Heterogeneous and Multiphasic Bioreactors – Segregation of Holding Time 225</p> <p>7.3 Comparison of CSTR and PFR 225</p> <p>7.3.1 CSTR versus PFR in Conversion Yield and Reaction Rate 225</p> <p>7.3.2 CSTR versus PFR in Terms of Nutrient Depletion and Scale-Up 226</p> <p>7.3.3 CSTR versus PFR – A Perspective from Residence Time Distribution 227</p> <p>7.4 Operating Mode of Bioreactors 229</p> <p>7.4.1 Batch Cultures 229</p> <p>7.4.2 Fed-Batch Cultures 229</p> <p>7.4.2.1 Intermittent Harvest 229</p> <p>7.4.2.2 Fed-Batch 230</p> <p>7.5 Configuration of Bioreactors 231</p> <p>7.5.1 Simple Stirred-Tank Bioreactor 231</p> <p>7.5.2 Airlift Bioreactor 233</p> <p>7.5.3 Hollow-Fiber Bioreactor 233</p> <p>7.6 Other Bioreactor Applications 233</p> <p>7.7 Cellular Processes through the Prism of Bioreactor Analysis 235</p> <p>7.8 Concluding Remarks 236</p> <p>Further Reading 236</p> <p>Nomenclature 237</p> <p>Problems 237</p> <p><b>8 Oxygen Transfer in Bioreactors 241</b></p> <p>8.1 Introduction 241</p> <p>8.2 Oxygen Supply to Biological Systems 242</p> <p>8.3 Oxygen and Carbon Dioxide Concentration in Medium – Henry’s Law 243</p> <p>8.4 Oxygen Transfer through the Gas–Liquid Interface 244</p> <p>8.4.1 A Film Model for Transfer across the Interface 244</p> <p>8.4.2 Concentration Driving Force for Interfacial Transfer 245</p> <p>8.4.3 Mass Transfer Coefficient and Interfacial Area 246</p> <p>8.5 Oxygen Transfer in Bioreactors 248</p> <p>8.5.1 Material Balance on Oxygen in a Bioreactor 249</p> <p>8.5.2 Oxygen Transfer in a Stirred Tank 251</p> <p>8.6 ExperimentalMeasurement of KLa and OUR 253</p> <p>8.6.1 Determination of KLa in a Stirred-Tank Bioreactor 253</p> <p>8.6.2 Measurement of OUR and qO2 254</p> <p>8.7 Oxygen Transfer in Cell Immobilization Reactors 256</p> <p>8.8 Concluding Remarks 256</p> <p>Further Reading 256</p> <p>Nomenclature 256</p> <p>Problems 258</p> <p><b>9 Scale-Up of Bioreactors and Bioprocesses 265</b></p> <p>9.1 Introduction 265</p> <p>9.2 General Considerations in Scale Translation 266</p> <p>9.2.1 Process and Equipment Parameters Affected by Scale-Up 266</p> <p>9.2.2 Scale Translation for Product Development and Process Troubleshooting 266</p> <p>9.2.3 How Scale-Up Affects Process Variables, Equipment, and Cellular Physiology 267</p> <p>9.2.4 Scale-Up of Equipment and Geometrical Similarity 267</p> <p>9.3 Mechanical Agitation 268</p> <p>9.4 Power Consumption and Mixing Characteristics 269</p> <p>9.4.1 Power Consumption of Agitated Bioreactors 269</p> <p>9.4.2 Other Dimensionless Numbers 272</p> <p>9.4.3 Correlation of Oxygen Transfer Coefficient 273</p> <p>9.5 Effect of Scale on Physical Behavior of Bioreactors 273</p> <p>9.6 Mixing Time 276</p> <p>9.6.1 Nutrient Enrichment Zone: Mixing Time versus Starvation Time 276</p> <p>9.6.2 Mixing Time 277</p> <p>9.6.3 Mixing Time Distribution 278</p> <p>9.7 Scaling Up and Oxygen Transfer 279</p> <p>9.7.1 Material Balance on Oxygen in Bioreactor 279</p> <p>9.7.1.1 Aeration Rate and the Oxygen Transfer Driving Force 280</p> <p>9.8 Other Process Parameters and Cell Physiology 281</p> <p>9.9 Concluding Remarks 282</p> <p>Further Reading 283</p> <p>Nomenclature 283</p> <p>Problems 284</p> <p><b>10 Cell Culture Bioprocesses and Biomanufacturing 289</b></p> <p>10.1 Cells in Culture 289</p> <p>10.2 Cell Culture Products 290</p> <p>10.2.1 Vaccines 290</p> <p>10.2.2 Therapeutic Proteins 291</p> <p>10.2.3 Biosimilars 292</p> <p>10.3 Cellular Properties Critical to Biologics Production 294</p> <p>10.3.1 Protein Secretion 294</p> <p>10.3.1.1 Folding in the Endoplasmic Reticulum 294</p> <p>10.3.1.2 Membrane Vesicle Translocation and Golgi Apparatus 295</p> <p>10.3.2 Glycosylation 296</p> <p>10.3.3 Protein Secretion and Glycan Heterogeneity 296</p> <p>10.4 Nutritional Requirements 299</p> <p>10.4.1 Chemical Environment In Vivo and in Culture 299</p> <p>10.4.2 Types of Media 300</p> <p>10.4.2.1 Basal Medium and Supplements 300</p> <p>10.4.2.2 Complex Medium, Defined Medium 301</p> <p>10.5 Cell Line Development 301</p> <p>10.5.1 Host Cells and Transfection 301</p> <p>10.5.2 Amplification 302</p> <p>10.6 Bioreactors 304</p> <p>10.6.1 Roller Bottles 304</p> <p>10.6.2 Stirred-Tank Bioreactors for Suspension Cells 305</p> <p>10.6.3 Stirred-Tank Bioreactor with Microcarrier Cell Support 306</p> <p>10.6.4 Disposable Systems 307</p> <p>10.7 Cell Retention and Continuous Processes 307</p> <p>10.7.1 Continuous Culture and Steady State 307</p> <p>10.8 Cell Culture Manufacturing – Productivity and Product Quality 308</p> <p>10.8.1 Process and Product Quality 308</p> <p>10.8.2 Product Life Cycle 309</p> <p>10.8.3 Product Manufacturing 311</p> <p>10.8.3.1 Platform Process 311</p> <p>10.8.3.2 Manufacturing 311</p> <p>10.9 Concluding Remarks 312</p> <p>Further Reading 312</p> <p>Problems 313</p> <p><b>11 Introduction to Stem Cell Bioprocesses 319</b></p> <p>11.1 Introduction to Stem Cells 319</p> <p>11.2 Types of Stem Cells 320</p> <p>11.2.1 Adult Stem Cells 320</p> <p>11.2.1.1 Hematopoietic Stem Cells 321</p> <p>11.2.1.2 Mesenchymal Stem Cells 323</p> <p>11.2.1.3 Neuronal Stem Cells 323</p> <p>11.2.2 Embryonic Stem Cells 324</p> <p>11.2.3 Induced Pluripotent Stem Cells and Reprogramming 324</p> <p>11.3 Differentiation of Stem Cells 326</p> <p>11.4 Kinetic Description of Stem Cell Differentiation 328</p> <p>11.5 StemCell Technology 331</p> <p>11.6 Engineering in Cultivation of Stem Cells 332</p> <p>11.7 Concluding Remarks 335</p> <p>Further Reading 335</p> <p>Nomenclature 336</p> <p>Problems 336</p> <p><b>12 Synthetic Biotechnology: FromMetabolic Engineering to Synthetic Microbes 339</b></p> <p>12.1 Introduction 339</p> <p>12.2 Generalized Pathways for Biochemical Production 340</p> <p>12.3 General Strategy for Engineering an Industrial, Biochemical-Producing Microorganism 342</p> <p>12.3.1 Genomics, Metabolomics, Deducing Pathway, and Unveiling Regulation 342</p> <p>12.3.2 Introducing Genetic Alterations 343</p> <p>12.3.3 Isolating Superior Producers 345</p> <p>12.3.3.1 Screening of Mutants with the Desired Phenotype 345</p> <p>12.3.3.2 Selection of Mutants with the Target Trait 345</p> <p>12.3.4 Mechanisms of Enhancing the Biosynthetic Machinery 347</p> <p>12.3.4.1 Relaxing the Constriction Points in the Pathway 347</p> <p>12.3.4.2 Channeling Precursor Supply 348</p> <p>12.3.4.3 Eliminating Product Diversion 350</p> <p>12.3.4.4 Enhancing Product Transport 350</p> <p>12.3.4.5 Rerouting Pathways 350</p> <p>12.3.5 Engineering Host Cells – Beyond the Pathway 352</p> <p>12.3.5.1 Altering Substrate Utilization 352</p> <p>12.3.5.2 Manipulating the Time Dynamics of Production 352</p> <p>12.3.5.3 Increasing Product Tolerance 354</p> <p>12.4 Pathway Synthesis 356</p> <p>12.4.1 Host Cells: Native Hosts versus Archetypical Hosts 356</p> <p>12.4.2 Expressing Heterologous Enzymes to Produce a Nonnative Product 357</p> <p>12.4.3 Activating a Silent Pathway in a Native Host 359</p> <p>12.5 Stoichiometric and Kinetic Considerations in Pathway Engineering 359</p> <p>12.6 Synthetic Biology 367</p> <p>12.6.1 Synthetic (Cell-Free) Biochemical Reaction System 367</p> <p>12.6.2 Synthetic Circuits 369</p> <p>12.6.2.1 Artificial Genetic Circuits 369</p> <p>12.6.2.2 Synthetic Signaling Pathway 369</p> <p>12.6.3 Synthetic Organisms 371</p> <p>12.6.3.1 Minimum Genome and Reduced Genome 371</p> <p>12.6.3.2 Chemical Synthesis of a Genome 372</p> <p>12.6.3.3 Surrogate Cells from a Synthetic Genome 374</p> <p>12.7 Concluding Remarks 374</p> <p>Further Reading 374</p> <p>Problems 375</p> <p><b>13 Process Engineering of Bioproduct Recovery 381</b></p> <p>13.1 Introduction 381</p> <p>13.2 Characteristics of Biochemical Products 382</p> <p>13.3 General Strategy of Bioproduct Recovery 385</p> <p>13.3.1 Properties Used in Bioseparation 385</p> <p>13.3.2 Stages in Bioseparation 387</p> <p>13.3.2.1 Cell and Solid Removal 387</p> <p>13.3.2.2 Product Isolation (Capture) and Volume Reduction 387</p> <p>13.3.2.3 Product Purification 388</p> <p>13.3.2.4 Product Polishing 388</p> <p>13.4 Unit Operations in Bioseparation 389</p> <p>13.4.1 Filtration 389</p> <p>13.4.2 Centrifugation 390</p> <p>13.4.3 Liquid–Liquid Extraction 393</p> <p>13.4.4 Liquid Chromatography 395</p> <p>13.4.5 Membrane Filtration 396</p> <p>13.4.6 Precipitation and Crystallization 397</p> <p>13.5 Examples of Industrial Bioseparation Processes 398</p> <p>13.5.1 Recombinant Antibody IgG 398</p> <p>13.5.2 Penicillin 401</p> <p>13.5.3 Monosodium Glutamate 404</p> <p>13.5.4 Cohn Fractionation 404</p> <p>13.6 Concluding Remarks 404</p> <p>Further Reading 406</p> <p>Nomenclature 407</p> <p>Problems 408</p> <p><b>14 Chromatographic Operations in Bioseparation 413</b></p> <p>14.1 Introduction 413</p> <p>14.2 Adsorbent 415</p> <p>14.2.1 Types of Adsorbent 415</p> <p>14.2.2 Ligand and Mechanism of Separation 418</p> <p>14.2.3 Types of Liquid Chromatography 419</p> <p>14.3 Adsorption Isotherm 420</p> <p>14.3.1 Adsorption Equilibrium: Langmuir Isotherm 420</p> <p>14.3.2 Isotherm Dynamics in Adsorption and Desorption 421</p> <p>14.4 Adsorption Chromatography 425</p> <p>14.4.1 Discrete-Stage Analysis 425</p> <p>14.4.2 Breakthrough Curve 427</p> <p>14.4.3 An Empirical Two-Parameter Description of a Breakthrough Curve 429</p> <p>14.4.4 One-Porosity Model for an Adsorption Process 431</p> <p>14.4.5 Elution of Solutes from an Adsorption Column 433</p> <p>14.5 Elution Chromatography 435</p> <p>14.5.1 Discrete-Stage Analysis 435</p> <p>14.5.2 Determination of Stage Number 441</p> <p>14.5.3 Effect of Stage Number and Number of Theoretical Plates 442</p> <p>14.5.4 Two-Porosity Model, Mass Transfer Limitation 444</p> <p>14.6 Scale-Up and Continuous Operation 447</p> <p>14.6.1 Mass Transfer Limitation and the van Deemter Equation 447</p> <p>14.6.2 Scale-Up of Chromatography 448</p> <p>14.6.3 Continuous Adsorption and Continuous Elution Chromatography 450</p> <p>14.7 Concluding Remarks 454</p> <p>Further Reading 454</p> <p>Nomenclature 454</p> <p>Problems 456</p> <p>Index 471</p>
<p><b> WEI-SHOU HU</b> is Professor in the Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, USA.
<p> This book is a short introduction to the engineering principles of harnessing the vast potential of microorganisms, and animal and plant cells in making biochemical products. It was written for scientists who have no background in engineering, and for engineers with minimal background in biology. The overall subject dealt with is process, but the coverage goes beyond the process of biomanufacturing in the bioreactor, and extends to the factory of cell's biosynthetic machinery. <p> Starting with an overview of biotechnology and organism, engineers are eased into biochemical reactions and life scientists are exposed to the technology of production using cells. Subsequent chapters allow engineers to be acquainted with biochemical pathways, while life scientist learn about stoichiometric and kinetic principles of reactions and cell growth. This leads to the coverage of reactors, oxygen transfer and scale up. Following three chapters on biomanufacturing of current and future importance, i.e. cell culture, stem cells and synthetic biology, the topic switches to product purification, first with a conceptual coverage of operations used in bioseparation, and then a more detailed analysis to provide a conceptual understanding of chromatography, the modern workhorse of bioseparation. <p> Drawing on principles from engineering and life sciences, this book is for practitioners in biotechnology and bioengineering. The author has used the material within this book for a course for advanced students in both engineering and life sciences. To this end, problems are provided at the end of each chapter.

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