Dissertation > Excellent graduate degree dissertation topics show

Study on the Enzymatic Saccharification and Thermogravimetry of Corn Stover Pretreated by Mixed-culture of White-rot Fungi

Author: WangJinJin
Tutor: YangYang
School: Huazhong University of Science and Technology
Course: Microbiology
Keywords: White rot fungi Mixed culture Cellulase Lignocellulose TGA
CLC: S216.2
Type: Master's thesis
Year: 2009
Downloads: 51
Quote: 0
Read: Download Dissertation

Abstract


Corn stover for ethanol production has major economic significance . However , due to its complex structure , the need using pretreatment to improve the rate of enzymatic saccharification . This paper degradation characteristic differences between the strains , mixed culture of white rot fungi mainly processing corn stalks , mixed culture of enzymatic saccharification a preliminary understanding of the mixed culture of thermal heavy impact . Screened 22 157 Basidiomycetes , and then deal with different combinations of corn stalks , enzymatic saccharification rate compared with pure cultures of mixed cultures treated did not significantly improve . To further study the mixed culture of enzymatic saccharification select different degradation patterns of white rot fungi , Auricularia / ZT, Auricularia / CD2 mixed culture system by adjusting the proportion of inoculation and vaccination order , and to study the mixed culture of white rot bacteria enzyme characteristics lignocellulose degradation characteristics . The main conclusions are: enzyme activity compared with pure cultures of the occurrence of a significant change , showed synergistic or suppress ; mixed culture can improve the rate of degradation of cellulose , lignin degradation rate is somewhere between pure culture , mixed culture of different strains of a combination of half- fiber prime degradation rate trends ; enzyme activity and lignocellulose degradation rate of no correlation . Decline in cellulose content , lignin retention may result in mixed culture saccharification rate is lower than the pure culture . TGA experiment result table understand rot fungus mixed culture can lead to reduce the initial temperature of pyrolysis , the termination of the temperature rise , and the solid residue was increased , showing the pure culture of the same law . From the activation energy for the mixed culture than in pure culture is not conducive to the thermal cracking . Mixed culture , which led to the decline of the relative content of cellulose , lignin relative content related to an increase . Through this study provide a theoretical basis for applications in biological pretreatment of biomass production of fuel ethanol and bio- oil mixed culture .

Related Dissertations

  1. Study on the Three-stage Inoculant and Lignocellulose Gegradation in Dairy Manure Composting,S141.4
  2. Cloning of Celluase Gene cel6B from Lentinula Endodes and Its Expression in Escherichia Coil,S646.12
  3. Trametes sp.SQ01 and Chaetomium sp.R01 mixed culture studies on decolorization,X791
  4. Screening of Cellulase-producing Mutants by T-DNA Insertional Mutagenesis and Functional Analysis of Vacuolar Protein Sorting Receptor in Trichoderma Reesei,Q93
  5. The Analysis of Safty and Economy of Idonesia Coal Mixed Burn in Coal-fired Boiler,TK227.1
  6. Crop straw cellulose degrading bacteria Isolation and Screening,S216.2
  7. Basic Study on the Physical-Chemical and Pyrolysis-Incineration Characteristics of Typical Components in Medical Wastes,X799.3
  8. Yanzhou Tianchi mine gob fire retardants preferred,TD752.2
  9. Dirhamnolipid Enhanced Enzymatic Hydrolysis of Lignocellulose in Compost,TQ352.1
  10. Effect of Magnetic Fe3O4 Particles and Study of the Cellulase Immobilized by Magnetic Gelatin on Enzymatic Hydrolysis of Sunflower Seed Hull,TQ223.122
  11. Study on Structures and Properties of Metal-organic Frameworks (MOF) Constructed from Aromatic Carboxylic Acid and Heterocyclic Bidentate Bridging Ligands,O621.13
  12. Effects of Enzyme Preparation on Growth Performance and Nutrient Digestibility in Ducks,S834.5
  13. Investigation of Microbial Diversity and Metagenomic Analysis of Ligninolytic Genes for a Tropical Rain Forest Soil from Xishuangbanna,S714.3
  14. Tumor Cells Can Regulate the Function of Macrophage to Promote the Tumor Proliferation,R730.2
  15. The Acquisition of the English Past Tense in EFL Classroom: a Comparison of the Effects of Two Teaching Approaches,H319
  16. The xylanase Y3 screening and nature of the visits,X172
  17. Basic Research of the Relationship between Coal Quality and Its Combustion Feature of Steam Coal,TQ534
  18. Cellulase Production by Submerged Fermentation and Bioconversion of Poplar Wood to Ethanol,TQ223.122
  19. Numerical Simulation and Analysis on Biomass Gasification Furnace,TK6
  20. Research on the Efficient Mechanism for Degrading Cellulose in the Rumen of Luxi-Cattle,Q936

CLC: > Agricultural Sciences > Agricultural Engineering > Agricultural power,rural energy > Application of bio-energy ( biomass) > Plant energy
© 2012 www.DissertationTopic.Net  Mobile