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喀麦隆土壤柴油降解酵母的分离与鉴定以及其降解特性的研究

摘要第3-5页
ABSTRACT第5-6页
Chapter 1 Literature review第11-32页
    1.1 Use of petroleum and its products第11-12页
    1.2 Components in crude oil or petroleum第12-13页
    1.3 Environmental issues of petroleum第13页
    1.4 Methods to clean up petroleum第13-16页
        1.4.1 Mechanical method第14页
        1.4.2 Chemical method第14页
        1.4.3 Physical method第14-15页
        1.4.4 Biological method第15-16页
    1.5 Microorganims degrading petroleum hydrocarbons第16-18页
    1.6 Mechanisms of hydrocarbons biodegradation第18-20页
    1.7 Factors affecting the biodegradation第20-25页
        1.7.1 Physical state of oil第21页
        1.7.2 Temperature第21-22页
        1.7.3 Nutrients第22-23页
        1.7.4 Others factors第23-25页
    1.8 Presentation of Cameroon and objectives of this work第25-27页
        1.8.1 Cameroon第25-26页
        1.8.2 Objectives and scope of this study第26页
        1.8.3 Plan of the thesis第26-27页
    References第27-32页
Chapter 2 Isolation and identification of diesel degrading microorganisms第32-50页
    2.1 Introduction第32-34页
    2.2 Materials第34-37页
        2.2.1 Microorganisms source第34页
        2.2.2 Medium and reagents第34-36页
            2.2.2.1 Media第34-36页
            2.2.2.2 Reagents第36页
        2.2.3 Main reagents第36-37页
        2.2.4 Equipments第37页
    2.3 Methods第37-43页
        2.3.1 Isolation of microorganisms第37-38页
        2.3.2 Screening of diesel oil degrading microorganisms第38页
        2.3.3 Identification of the isolate第38-43页
            2.3.3.1 Morphological characteristics of colonies on the plate第38页
            2.3.3.2 Microscopic appearance of cells第38-39页
            2.3.3.3 Physiological and biochemical tests第39-40页
            2.3.3.4 Molccular identification第40-43页
    2.4 Results and discussion第43-48页
        2.4.1 Results第43-47页
            2.4.1.1 Morphogical characteristics of isolate KML第43-44页
            2.4.1.2 Physiological and biochemical characteristics第44-45页
            2.4.1.3 Molecular identification第45-47页
        2.4.2 Discussion第47-48页
    2.5 Conclusions第48-49页
    References第49-50页
Chapter3 Biodegradation of diesel oil by isolate KML第50-75页
    3.1 Introduction第50-52页
    3.2 Materials第52-55页
        3.2.1 Microorganisms source第52页
        3.2.2 Media and reagents第52-53页
            3.2.2.1 Media第52页
            3.2.2.2 Reagents第52-53页
        3.2.3 Chemicals第53-54页
        3.2.4 Equipments第54-55页
    3.3 Methods第55-60页
        3.3.1 Enrichment method第55页
        3.3.2 Biodegradation studies第55-57页
            3.3.2.1 Inoculum preparation第55-56页
            3.3.2.2 Standard curve of diesel第56页
            3.3.2.3 Time course of diesel oil degradation by isolate KML第56-57页
        3.3.3 Effects of various factors on the biodegradation第57-60页
            3.3.3.1 Effect of temperature第57-58页
            3.3.3.2 Effect of pH on diesel oil degradation第58页
            3.3.3.3 Effect of different nitrogen sources on diesel degradation第58-59页
            3.3.3.4 Effect of different yeast concentration第59页
            3.3.3.5 Effect of different rhamnolipid concentration第59页
            3.3.3.6 Effect of different inoculum concentration第59页
            3.3.3.7 Effect of different diesel oil concentration第59-60页
    3.4 Results and discussion第60-71页
        3.4.1 Results第60-68页
            3.4.1.1 Standard curve of diesel oil concentration第60-61页
            3.4.1.2 Biodegradation essay of isolate KML第61-62页
            3.4.1.3 Effect of pH第62页
            3.4.1.4 Effect of temperature on diesel degradaiton by isolate KML第62-63页
            3.4.1.5. Effect of different nitrogen sources第63-64页
            3.4.1.6 Effect of yeast extract concentration第64页
            3.4.1.7 Effect of rhamnolipid concentration第64-65页
            3.4.1.8. Effect of inoculum concentration第65-66页
            3.4.1.9 Effect of diesel oil concentration on diesel degradation by isolate KML第66-68页
        3.4.2 Discussion第68-71页
    3.5 Conclusions第71页
    References第71-75页
Chapter 4 GC-MS analysis of diesel oil components第75-85页
    4.1 Introduction第75-77页
    4.2 Materials第77页
        4.2.1 Medium and chemicals第77页
        4.2.2 Equipments第77页
    4.3 Methods第77-79页
    4.4. Results and discussion第79-82页
    4.5 Conclusions第82-83页
    References第83-85页
Chapter 5 Conclusion and future work第85-87页
    5.1 Conclusions第85-86页
    5.2 Future work第86-87页
Acknowledgements第87-88页
Publications第88页

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