Microbial Extracellular Polymeric Substances

Characterization, Structure and Function

Häftad, Engelska, 2011

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Beskrivning

Microbial extracellular polymeric substances (EPS) are the key components for the aggregation of microorganisms in biofilms, flocs and sludge.

Produktinformation

Utgivningsdatum:2011-10-03
Mått:155 x 235 x 17 mm
Vikt:424 g
Format:Häftad
Språk:Engelska
Antal sidor:258
Förlag:Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
ISBN:9783642642777

Utforska kategorier

Biokemi inom Naturvetenskap och teknik
Biokemisk teknik inom Naturvetenskap och teknik
Biologi inom Naturvetenskap och teknik

Innehållsförteckning

What are Bacterial Extracellular Polymeric Substances?.- 1 Introduction.- 2 Definitions of EPS.- 3 Composition, Secretion and Spatial Arrangement of EPS.- 4 Industrial and Clinical Importance of EPS.- 5 Bacterial Alginate — an Example of Bacterial EPS.- 6 Functions of EPS.- 7 Ecological Aspects of EPS.- References.- In Situ Characterization of Extracellular Polymeric Substances (EPS) in Biofilm Systems.- 1 Introduction.- 2 Destructive Analysis of EPS.- 3 Non-Destructive Analysis of EPS.- 4 CLSM Approach.- 5 Image Analyses and Three-Dimensional Data Presentation.- 6 Case Studies: In Situ Characterization of EPS.- 7 Limitations of Non-Destructive Analyses.- References.- Extraction of EPS.- 1 Introduction.- 2 Sampling and Pretreatment.- 3 Extraction of EPS.- 4 Contamination by Intracellular Macromolecules.- 5 Disruption of Macromolecules.- 6 Extraction Efficiency.- 7 Purification and Analysis.- 8 Conclusion.- References.- Biofilm Exopolysaccharides.- 1 Introduction.- 2 Polysaccharide Composition and Structure.- 3 Promotion of Order and Gelation.- 4 Ionic Interactions.- 5 Synergistic Effects.- 6 Other Functions of Biofilm Exopolysaccharides.- 7 Dissolution of Physical Structures.- 8 Conclusions.- References.- Regulation of Matrix Polymer in Biofilm Formation and Dispersion.- 1 Alginate Biosynthesis in Pseudomonas aeruginosa.- 2 Regulation of Alginate Biosynthetic Genes During Biofilm Development.- 3 Control of Biofilm Dispersion.- 4 Activation of Alginate Biosynthesis and Chemical Communication in Biofilms.- 5 P.aeruginosa Biofilm Life Cycle.- References.- Exopolymers of Sulphate-Reducing Bacteria.- Analysis and Function of the EPS from the Strong Acidophile Thiobacillus ferrooxidans.- 1 Introduction.- 2 Leaching Bacteria.- 3 Metal Sulfide Dissolution.- 4 EPS Analysis.- 5Function of EPS.- 6 Conclusions.- References.- Physical and Chemical Properties of Extracellular Polysaccharides Associated with Biofilms and Related Systems.- 1 Introduction.- 2 Biopolymer Gels.- 3 Physical Characterization of Biofilms.- 4 Chemical and Biochemical Characterization of Biofilms.- 5 Bacterial Alginates.- References.- Chemical Communication Within Microbial Biofilms: Chemotaxis and Quorum Sensing in Bacterial Cells.- 1 Introduction.- 2 Bacterial Chemotaxis and Initial Aggregations of Cells.- 3 Microspatial Patterns and Movement of Bacteria Within Biofilms.- 4 Bacterial Quorum Sensing: Induction and Regulation of Activities.- 5 Enhancement of Chemotaxis and Quorum Sensing Processes by the Biofilm Matrix.- 6 The Biofilm as a Microbial Organism.- References.- Function of EPS.- 1 Introduction.- 2 Role of EPS in Cellular Associations.- 3 Role of EPS in Nutrition.- 4 Role of EPS in the Interaction of Microorganisms with their Biological, Physical, and Chemical Environment.- 5 EPS and the Macro-Environment.- 6 Conclusions.- References.- Polysaccharases in Biofilms — Sources — Action — Consequences!.- 1 Polysaccharases in Biofilms.- 2 Nature of Polysaccharases.- 3 Sources of Polysaccharases.- 4 Effects of Enzymes on Biofilms.- 5 Application of Enzymes to Biofilms.- References.- Extracellular Enzymes Within Microbial Biofilms and the Role of the Extracellular Polymer Matrix.- 1 Introduction: Importance of Extracellular Enzymes to Bacterial Cells and Organic Matter Processing.- 2 The Microbial Biofilm and Extracellular Polymers.- 3 Extracellular Polymers as a “Sorptive Sponge” and “Colloidal Trap” for High-Molecular-Weight Organic Matter.- 4 Localization of Enzymes by Extracellular Polymers: the “Lectin-Localization Model”.- 5 “ExtracellularPolymer Microdomains” and the Stability of Extracellular Enzymes.- 6 Environmental Influences on Enzyme Activity.- 7 Biofilm Induction and Regulation of Extracellular Enzymes..- References.- Interaction Between Extracellular Polysaccharides and Enzymes.- 1 Extracellular Enzymes in Biofilms.- 2 Mechanisms of Enzyme and Polysaccharide Secretion.- 3 Interaction of Enzymes with Extracellular Polysaccharides.- 4 Consequences of Enzyme-Polysaccharide Interactions in Biofilms.- References.