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Contributors xv
Introduction xix
1 MOLECULAR EVOLUTION OF EXTREMOPHILES 1
Debamitra Chakravorty, Ashwinee Kumar Shreshtha, V. R. Sarath Babu, and Sanjukta Patra
1.1 Introduction 1
1.2 Molecular Evolution of Thermophiles 2
1.2.1 Habitat 2
1.2.2 Cellular Organization 3
1.2.3 Genome 3
1.2.4 Proteome 3
1.3 Molecular Evolution of Psychrophiles 4
1.3.1 Habitat 4
1.3.2 Cellular Organization 4
1.3.3 Genome 5
1.3.4 Proteome 5
1.4 Molecular Evolution of Halophiles 6
1.4.1 Habitat 6
1.4.2 Cellular Organization 6
1.4.3 Genome 6
1.4.4 Proteome 6
1.5 Molecular Evolution of Alkaliphiles 7
1.5.1 Habitat 7
1.5.2 Cellular Organization 7
1.5.3 Genome 7
1.5.4 Proteome 8
1.6 Molecular Evolution of Acidophiles 8
1.6.1 Habitat 8
1.6.2 Cellular Organization 8
1.6.3 Genome 9
1.6.4 Proteome 10
1.7 Molecular Evolution of Barophiles 10
1.7.1 Habitat 10
1.7.2 Cellular Organization 10
1.7.3 Genome 11
1.7.4 Proteome 11
1.8 Engineering Extremophiles 12
1.8.1 Microbiology 12
1.8.2 Molecular Biology 13
1.8.3 Bioinformatics 16
1.9 Case Studies 17
1.9.1 Biofuel Production 17
1.9.2 Bioremediation 18
1.9.3 Pesticide Biodegradation 18
1.9.4 Escherichia coli: A Candidate Extremophile 19
1.9.5 Oil-Spill-Cleaning Bacteria 19
1.9.6 Potential Applications and Benefits 19
1.10 Implications of Engineered Extremophiles on Ecology, Environment, and Health 20
1.11 Conclusions and Recommendations 20
References 21
2 ATTAINING EXTREMOPHILES AND EXTREMOLYTES: METHODOLOGIES AND LIMITATIONS 29
Debamitra Chakravorty and Sanjukta Patra
2.1 Introduction 29
2.2 Extremophiles: Types and Diversity 30
2.2.1 Thermophiles 30
2.2.2 Psychrophiles 37
2.2.3 Halophiles 41
2.2.4 Alkaliphiles 46
2.2.5 Acidophiles 49
2.2.6 Barophiles 52
2.3 Extremolytes 54
2.3.1 Production and Purification of Extremolytes 56
2.3.2 Detection, Identification, and Quantification of Extremolytes 63
2.3.3 Limitations 63
2.4 Conclusions 64
References 64
3 STRATEGIES FOR THE ISOLATION AND CULTIVATION OF HALOPHILIC MICROORGANISMS 75
Aharon Oren
3.1 Introduction 75
3.2 Thalassohaline and Athalassohaline Hypersaline Environments 76
3.3 Case Studies 79
3.3.1 Isolation of Aerobic Chemoheterotrophic Archaea from Solar Salterns 79
3.3.2 Magnesium-Requiring and Magnesium-Tolerant Archaea from the Dead Sea 81
3.3.3 Isolation of Acidophilic Halophilic Archaea 82
3.3.4 Isolation of Unusual Anaerobic Halophiles from Deep-Sea Brines 82
3.3.5 Isolation of Polyextremophilic Anaerobic Halophiles 83
3.3.6 Isolation of Halophilic Microorganisms Associated with Plants and Animals 84
3.3.7 Isolation of Halophilic Archaea from Low-Salt Environments 84
3.4 The Upper Salinity Limits of Different Types of Energy Generation 85
3.5 Final Comments 88
References 89
4 HALOPHILIC PROPERTIES AND THEIR MANIPULATION AND APPLICATION 95
Tsutomu Arakawa, Hiroko Tokunaga, Matsujiro Ishibashi, and Masao Tokunaga
4.1 Introduction 95
4.2 Industrial Applications of Halophilic Organisms and Their Proteins 96
4.3 Extreme and Moderate Halophiles and Their Proteins 98
4.4 Generation of Low-Salt Stable Extreme-Halophilic Proteins 99
4.5 Interconversion of Halophilic and Nonhalophilic Proteins 105
4.5.1 Dimer–Tetramer Conversion of HaNDK and PaNDK 106
4.5.2 Generation of Halophilic PaNDK 108
4.6 Soluble Expression of Recombinant Proteins 110
4.7 Natively Unfolded Proteins 113
4.8 Organic Solvent Tolerance 113
References 114
5 FEATURES AND APPLICATIONS OF HALOPHILIC ARCHAEA 123
Ximena C. Abrevaya
5.1 Introduction 123
5.2 General Features 124
5.2.1 Morphology 124
5.2.2 Metabolism 125
5.2.3 Osmoadaptation 126
5.2.4 Natural Habitats 126
5.2.5 Pigments 128
5.2.6 Genetics 130
5.3 Applications of Halophilic Archaea 130
5.3.1 Production of Enzymes 131
5.3.2 Production of Biopolymers 135
5.3.3 Uses in Fermented Foods 137
5.3.4 Uses in Bioremediation and Xenobiotic Degradation 138
5.3.5 Uses in Solar Salt Production 139
5.3.6 Carotenoid Derivative Production and Biotechnological Uses 140
5.3.7 Other Applications 141
5.3.8 Applications in Astrobiology-Related Research 142
5.4 Concluding Remarks 143
Acknowledgment 144
References 144
6 BIOTECHNOLOGICAL APPLICATIONS OF COLD-ADAPTED BACTERIA 159
Laura Garcia-Descalzo, Alberto Alcazar, Fernando Baquero, and Cristina Cid
6.1 Introduction 159
6.2 Molecular Mechanisms of Adaptation to Cold Environments 162
6.3 Exopolysaccharides 163
6.4 Lipids 164
6.5 Proteins 164
6.5.1 Stable Proteins at Cold Temperatures 164
6.5.2 Cold-Adapted Enzymes 167
6.6 Biotechnological Applications of Cold-Adapted Enzymes 168
6.6.1 Detergents 168
6.6.2 Food Industry 168
6.6.3 Pharmaceutical Industry 168
6.6.4 Biofuels 169
6.6.5 Molecular Biology 169
6.7 Biodegradation and Bioremediation in Cold Environments 169
6.7.1 Biodegradation of Petroleum 169
6.7.2 Biodegradation of Phenolic Compounds 170
6.7.3 Bioremediation of Radionuclides, Halogenated Organics, and Nitramines 171
6.7.4 Treatment of Acid Mine Drainage 172
6.8 Conclusions 172
Acknowledgments 172
References 173
Webliography 174
7 ECOLOGY AND BIOTECHNOLOGY OF EXTREMOPHILIC MICROORGANISMS, PARTICULARLY ANAEROBIC HERMOPHILES 175
Francesco Canganella
7.1 Introduction 175
7.2 Thermophiles 176
7.2.1 Thermophilic Anaerobes and Clostridia 178
7.2.2 Ecology of Thermophiles 179
7.2.3 Ecology of Extreme Thermophilic Archaea 181
7.2.4 Ecology of Extreme Thermophilic Bacteria 182
7.2.5 Biotechnology of Thermophiles 182
7.3 Acidophiles 187
7.3.1 Acidophilic Ecosystems 191
7.4 Alkaliphiles 191
7.4.1 Alakalyphilic Ecosystems 192
7.4.2 Biotechnology of Acidophilic and Alkaliphilic Microorganisms 192
7.5 Halophiles 193
7.5.1 NaCl-Enriched Ecosystems 193
7.5.2 Biotechnology of Halophilic Microorganisms 194
7.6 Piezophiles 194
7.6.1 Ecology of Piezophiles 196
7.6.2 Biotechnology of Piezophiles 196
References 196
8 THE ROLE OF EXTREMOPHILIC MICROORGANISMS AND THEIR BIOPRODUCTS IN FOOD PROCESSING AND PRODUCTION 205
Jane A. Irwin
8.1 Introduction 205
8.2 Enzymes from Extremophiles in Food Processing 206
8.2.1 Enzymes from Thermophiles 208
8.2.2 Enzymes from Cold-Adapted Organisms 212
8.2.3 Molecules from Halophiles 215
8.3 Alkaliphiles, Acidophiles, and Piezophiles 217
8.4 Extremophiles in Food Spoilage and Contamination 218
8.4.1 Meat and Fish 218
8.4.2 Milk and Dairy Products 219
8.4.3 Canned and Dried Food 220
8.5 Extremophiles as Pathogens of Food Species 221
8.6 Conclusions 222
References 222
9 EXTREMOPHILES AND THEIR APPLICATION TO BIOFUEL RESEARCH 233
M.P. Taylor, R. Bauer, S. Mackay, M. Tuffin, and D.A. Cowan
9.1 Introduction 233
9.2 Extremophiles and Fuels 235
9.2.1 Thermophiles and Liquid Fuels: Butanol and Ethanol 235
9.2.2 Thermophiles and Gaseous Fuels: Methane and Hydrogen 239
9.2.3 Psychrophiles and Acidophile Whole-Cell Biocatalysts for Fuels 240
9.3 Exploiting Extremophilic Enzymes in Biomass Conversion to Biofuel 241
9.3.1 Lignocellulose: A Recalcitrant but Valuable Biomass Resource 241
9.3.2 Other Polymeric Biomass Resources 246
9.3.3 Enhancing Enzyme Efficiency 248
9.4 Conclusions and Future Prospects 249
References 249
10 SUSTAINABLE ROLE OF THERMOPHILES IN THE SECOND GENERATION OF ETHANOL PRODUCTION 267
Anuj K. Chandel, Ellen C. Giese, Om V. Singh, and Silvio Silv´erio da Silva
10.1 Introduction 267
10.2 Thermophilic Cellulases for Deconstruction of the Plant Cell Wall 269
10.2.1 Thermophilic Cellulase Production and Characteristics 270
10.2.2 Alterations in Thermophiles for High-Cellulase Titers 273
10.2.3 -Glucosidases from Thermophilic Microorganisms 274
10.3 Ethanol Production at Elevated Temperatures 274
10.3.1 Thermotolerant Microorganisms for Ethanol Production 276
10.3.2 Improvements in Thermophilic Ethanol Producers 277
10.3.3 Process Development and Thermophiles 279
10.4 Future Perspectives and Challenges 281
10.5 Conclusions 283
Acknowledgments 283
References 283
11 ECOFRIENDLY ASPECTS OF THE USE OF EXTREMOPHILIC ENZYMES IN TEXTILE SUBSTRATES 291
Bipin J. Agrawal and Sandhya Mishra
11.1 Introduction 291
11.2 Biopolymeric Fibers 292
11.3 Extremophilic Enzymes and Their Use in the Textile Industry 293
11.3.1 Amylases 294
11.3.2 Cellulases 295
11.3.3 Pectinases 295
11.3.4 Catalases 296
11.3.5 Proteases 296
11.3.6 Esterases 296
11.3.7 Laccases 297
11.4 Utilization of Extremophilic Enzymes in Textile Wet Processing 297
11.4.1 Fiber Preparation 297
11.4.2 Fabric Preparation 300
11.4.3 Enzymes in Biopreparation of Textiles 303
11.5 Finishing with Extremophilic Enzymes 306
11.5.1 Biopolishing of Cotton 306
11.5.2 Bio-Denim Washing 307
11.5.3 Biopolishing of Jute 309
11.5.4 Biopolishing of Wool 310
11.5.5 Biopolishing of Silk 310
11.5.6 Biopolishing of Lyocell 310
11.6 Role of Enzymes in Textile After-Care 311
11.7 Role of Enzymes in Effluent Treatment of Textiles 314
11.8 Conclusions 315
References 315
12 THE USE OF EXTREMOPHILIC MICROORGANISMS IN THE INDUSTRIAL RECOVERY OF METALS 319
Carlos A. Jerez
12.1 Introduction 319
12.2 Biomining Extremophiles and Their Industrial Applications 320
12.3 Molecular Studies in Acidophilic Biomining Microorganisms 322
12.4 Microbial Resistance to Acid and Metals 324
12.4.1 Acidophilic Bacteria 324
12.4.2 Acidophilic Archaeons 328
Acknowledgments 331
References 331
13 BACTERIAL POLYMERS PRODUCED BY EXTREMOPHILES: BIOSYNTHESIS, CHARACTERIZATION, AND APPLICATIONS OF EXOPOLYSACCHARIDES 335
Nicolaus Barbara, Anzelmo Gianluca, and Poli Annarita
13.1 Introduction 335
13.2 EPS Produced by Extremophilic Bacteria 336
13.3 Examples of Proposed EPS Biosynthesis from Extremophiles 345
13.4 Physicochemical Investigations for Potential Applications 349
Acknowledgment 351
References 351
14 BIOMEDICAL APPLICATIONS OF EXOPOLYSACCHARIDES PRODUCED BY MICROORGANISMS ISOLATED FROM EXTREME ENVIRONMENTS 357
Ignacio J. Molina, Carmen Ruiz-Ruiz, Emilia Quesada, and Victoria B´ejar
14.1 Introduction 357
14.2 Chemical Composition and Structure of EPSs 358
14.3 Physical Properties of EPSs 358
14.4 Biological Functions of EPSs 359
14.5 Exopolysaccharides Deriving from Extremophilic Organisms 359
14.6 Clinical Applications of EPSs 359
14.7 Exopolysaccharides of Halophilic Microorganisms 361
14.7.1 Halomonas stenophila B-100 361
14.8 Concluding Remarks 362
Acknowledgments 362
References 362
15 BIOSYNTHESIS OF EXTREMOLYTES: RADIATION RESISTANCE AND BIOTECHNOLOGICAL IMPLICATIONS 367
Erin Copeland, Nicholas Choy, Prashant Gabani, and Om V. Singh
15.1 Introduction 367
15.2 Biotechnological Implications of Extremolytes 369
15.2.1 Industrial Implications 369
15.2.2 Therapeutic Implications 370
15.3 Fermentative Production of Extremolytes 371
15.3.1 Microorganisms: An Asset in Extremolyte Fermentation 371
15.3.2 Evaluation of the Fermentation Process 375
15.4 Commercialization of Extremolytes and Extremozymes 380
15.5 Product Recovery 382
15.6 Conclusions 383
References 383
16 SMART THERAPEUTICS FROM EXTREMOPHILES: UNEXPLORED APPLICATIONS AND TECHNOLOGICAL CHALLENGES 389
Raj Kumar and Ajeet Singh
16.1 Introduction 389
16.2 Extremolytes as Protein Protectants 391
16.3 Extremolytes as Cell Protectants 391
16.3.1 Mycosporine-like Amino Acids 392
16.3.2 Bacterioruberin 393
16.3.3 Sphaerophorin and Pannarin 393
16.4 Novel Therapeutics in the Developmental Stage 393
16.5 Homeland Security and Military Medicine 394
16.6 Technological Gaps in Therapeutic Product Development Using Extremophiles 396
16.7 Conclusions 397
Acknowledgment 398
References 398
Index 403
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Add Extremophiles: Sustainable Resources and Biotechnological Implications, Explores the utility and potential of extremophiles in sustainability and biotechnology Many extremophilic bio-products are already used as life-saving drugs. Until recently, however, the difficulty of working with these microbes has discouraged, Extremophiles: Sustainable Resources and Biotechnological Implications to the inventory that you are selling on WonderClubX
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Add Extremophiles: Sustainable Resources and Biotechnological Implications, Explores the utility and potential of extremophiles in sustainability and biotechnology Many extremophilic bio-products are already used as life-saving drugs. Until recently, however, the difficulty of working with these microbes has discouraged, Extremophiles: Sustainable Resources and Biotechnological Implications to your collection on WonderClub |