| Preface | 5 |
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| Contents | 7 |
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| List of Figures | 15 |
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| List of Tables | 19 |
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| 1 Introduction | 25 |
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| Abstract | 25 |
| References | 31 |
| 2 Brief Description of the Pulp and Papermaking Process | 33 |
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| Abstract | 33 |
| 2.1 Introduction | 33 |
| 2.2 Pulp and Papermaking Process | 35 |
| 2.2.1 Pulp Making Process | 35 |
| 2.2.2 Stock Preparation and Papermaking Process | 45 |
| References | 48 |
| 3 Tree Improvement | 51 |
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| Abstract | 51 |
| 3.1 Introduction | 51 |
| 3.1.1 Forest Trees in the Age of Modern Genetics | 52 |
| 3.1.1.1 Genetic Altering of Trees | 52 |
| 3.1.1.2 Phytoremediation | 56 |
| References | 60 |
| 4 Biotechnology in Forestry | 62 |
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| Abstract | 62 |
| 4.1 Introduction | 62 |
| 4.2 Historical Perspectives | 63 |
| 4.3 Biotechnological Applications in Forestry | 64 |
| 4.3.1 Propagation | 66 |
| 4.3.2 Genetic Engineering | 66 |
| 4.3.3 Transgenesis | 68 |
| 4.3.4 Lignin Modification | 69 |
| 4.3.5 In Vitro Culture | 70 |
| 4.3.6 Stress Resistance | 71 |
| 4.3.6.1 Abiotic | 71 |
| 4.3.6.2 Biotic | 71 |
| 4.3.7 Tissue Culture | 72 |
| 4.3.8 RNA Interference | 73 |
| 4.3.9 Marker-Assisted Selection and QTL Mapping | 75 |
| References | 76 |
| 5 Biodebarking | 80 |
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| Abstract | 80 |
| 5.1 Introduction | 80 |
| 5.2 Enzymes Used for Debarking | 83 |
| 5.3 Application of Enzymes for Debarking | 83 |
| 5.4 Advantages of Biodebarking | 87 |
| 5.5 Limitations and Future Prospects | 88 |
| References | 88 |
| 6 Biodepitching | 90 |
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| Abstract | 90 |
| 6.1 Introduction | 91 |
| 6.2 Environmental Impact of Lipophilic Extractives | 92 |
| 6.3 Methods for Pitch Control | 94 |
| 6.3.1 Conventional Treatment | 94 |
| 6.3.2 Biological Treatment | 94 |
| 6.3.2.1 Use of Fungi | 94 |
| 6.3.2.2 Use of Enzymes | 102 |
| Hydrolytic Enzymes | 103 |
| Oxidative Enzymes | 109 |
| 6.4 Advantages, Limitations, and Future Prospects | 112 |
| References | 113 |
| 7 Bioretting | 120 |
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| Abstract | 120 |
| 7.1 Introduction | 120 |
| 7.2 Methods for Retting | 121 |
| 7.3 Enzymes Used in Flax-Retting | 122 |
| 7.4 Application of Enzymes in Flax-Retting | 123 |
| 7.5 Effect of Enzyme-Retting on Fiber Yield and Properties | 130 |
| 7.6 Effect of Enzyme-Retting on Effluent Properties | 130 |
| References | 131 |
| 8 Biopulping | 135 |
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| Abstract | 135 |
| 8.1 Introduction | 136 |
| 8.2 Pulping Processes | 137 |
| 8.2.1 Mechanical Pulping | 137 |
| 8.2.2 Semichemical Pulping | 138 |
| 8.2.3 Chemical Pulping | 139 |
| 8.2.3.1 Kraft Process | 139 |
| 8.2.3.2 Sulfite Process | 139 |
| 8.3 Biomechanical Pulping | 140 |
| 8.4 Biochemical Pulping | 152 |
| 8.5 Organosolv Pulping | 159 |
| 8.6 Biopulping with Laccase–Mediator System | 159 |
| 8.7 Mechanism of Biopulping | 160 |
| 8.8 Advantages of Biopulping | 162 |
| 8.9 Limitations and Future Prospects | 163 |
| References | 164 |
| 9 Use of Enzymes in Mechanical Pulping | 170 |
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| Abstract | 170 |
| 9.1 Introduction | 170 |
| 9.2 Effect of Different Enzymes | 172 |
| 9.2.1 Cellulase Treatment | 172 |
| 9.2.2 Xylanase Treatment | 172 |
| 9.2.3 Cellobiohydrolase (CBH I) Treatment | 172 |
| 9.2.4 Cellobiohydrolase and Mannanase Blend Treatment | 173 |
| 9.2.5 Lignin Peroxidase, Manganese Peroxidase, and Laccase Treatment | 174 |
| 9.2.6 Pectinase Treatment | 175 |
| 9.2.7 Manganese Peroxidase, Laccase, and Pectinase Blend treatment | 177 |
| 9.3 Conclusions | 178 |
| References | 178 |
| 10 Biobleaching | 180 |
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| Abstract | 180 |
| 10.1 Introduction | 181 |
| 10.2 Xylanase Enzymes | 181 |
| 10.2.1 Production and Properties of Xylanases | 182 |
| 10.2.2 Performance of Xylanases in Bleaching | 186 |
| 10.2.3 Effect of Xylanases on Pulp and Effluent Quality | 196 |
| 10.2.4 Mechanism of Bleaching | 197 |
| 10.2.5 Conclusion and Future Prospects | 198 |