文摘
英文文摘
论文说明:LIST OF FIGURES、LIST OF TABLES、LIST OF ABBREVIATIONS
声明
ACKNOWLEDGEMENTS
CHAPTER ONE:INTRODUCTION AND LITERATURE REVIEW
1.1. The Genus Bifidobacterium
1.2. Bifidobacterium Classification
1.3. Morphological and Physiological Characteristics of Bifidobacteria
1.3.1. Morphological Characteristics
1.3.2. Physiological Characteristics
1.4. Production and Purification of Antimicrobial Compounds from Bifidobacteria
1.4.1. Bacteriocins
1.4.2. Bacteriocin-Like Compounds
1.4.3. Other Antimicrobial Compounds
1.5. Bifidobacteria and Probiotics
1.5.1. Definition and Selection Criteria for Probiotics
1.5.2. Probiotic Health Effects from Bifidobacteria
1.6. Bacteriocins
1.6.1. Definition,History and Classification of Bacteriocins
1.6.2. Methods to Purify Bacteriocins
1.6.3. Applications of bacteriocins in Food
1.7. Aims and Objectives of the Study
1.8. References
CHAPTER TWO:SCREENING AND MEASURING METHODS OF THE ANTIMICROBIAL ACTIVTY OF BIFIDOBACTERIUM SP.
2.1. Introduction
2.2. Material and Methods
2.2.1. Materials
2.2.2. Methods
2.3. Results and Discussion
2.3.1. Growth Properties of Bifidobacteria and Indicator Strains
2.3.2. Antimicrobial Activity of Bifidobacteria
2.3.3. Antimicrobial Effects of Bifidobacteria against the Indicator Strains in Skim Milk Medium
2.3.4. Effect of Enzymes and Detergents on the Antimicrobial Activity of the Bifidobacteria
2.3.5. Effect of the pH on the Antimicrobial Activity of the Bifidobacteria
2.3.6. Effect of the Heat Treatment on the Antimicrobial Activity of the Bifidobacteria
2.4. Conclusion
2.5. References
CHAPTER THREE:ISOLATION METHODS FOR THE BACTERIOCIN-LIKE INHITORY SUBSTANCES(BLIS)FROM BIFIDOBACTERIUM INFANTIS BCRC 14602
3.1. Introduction
3.2. MATERIAL AND METHODS
3.2.1. Materials
3.2.2. Methods
3.3. Results and Discussion
3.3.1. Antimicrobial Activity of B.infantis BLIS and Spectrum of Activity
3.3.2. Precipitation of B.infantis BLIS with Ammonium Sulphate
3.3.3. Adsorption and Desorption of B.infantis BLIS onto/from the Producer Cells
3.3.4. Adsorption and Desorption of B.infantis BLIS onto/from Silicic Acid(SA)
3.4. Conclusion
3.5. References
CHAPTER FOUR:PURIFICATION of BIFIDICIN I,A BACTERIOCIN PRODUCED BY BIFIDOBACTERIUM INFANTIS BCRC 14602
4.1. Introduction
4.2. Material and Methods
4.2.1. Materials
4.2.2. Methods
4.3. Results and Discussion
4.3.1. Antimicrobial Activity of B.infantis BCRC 14602 and Bifidin I Spectrum of Activity
4.3.2. Adsorption-Desorption of Bifidin I onto/from Silicic Acid
4.3.3. Purification of Bifidin I with Chromatographic Methods
4.3.4. Molecular Weight Determination
4.4. Conclusion
4.5. References
CHAPTER FIVE:CHARACTERIZATION OF BIFIDIN I; A BACTERIOCIN FROM BIFIDOBACTERIUM INFANTIS BCRC 14602
5.1. Introduction
5.2. Material and Methods
5.2.1. Materials
5.2.2. Methods
5.3. Results and Discussion
5.3.1. Production Kinetics of bifidin I
5.3.2. Mode of action
5.3.3. Effect of various enzymes,pH and,Heat Stability
5.3.4. Molecular mass estimation and amino acids sequence
5.3.5. Antilisterial activity of bifidin I
5.3.6. Plasmid Curing and Bifidin I Locus
5.4. Conclusion
5.5. References
CHAPTER SIX:GENERAL CONCLUSIONS AND RECOMMENDATIONS
6.1. Introduction
6.2. General Conclusion
6.2.1. Key Conclusions
6.2.2. Key Innovations
6.3. Recommendations
LIST OF PUBLICATIONS