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Uncultivated Microorganisms
  • Language: en
  • Pages: 215

Uncultivated Microorganisms

In 1898, an Austrian microbiologist Heinrich Winterberg made a curious observation: the number of microbial cells in his samples did not match the number of colonies formed on nutrient media (Winterberg 1898). About a decade later, J. Amann qu- tified this mismatch, which turned out to be surprisingly large, with non-growing cells outnumbering the cultivable ones almost 150 times (Amann 1911). These papers signify some of the earliest steps towards the discovery of an important phenomenon known today as the Great Plate Count Anomaly (Staley and Konopka 1985). Note how early in the history of microbiology these steps were taken. Detecting the Anomaly almost certainly required the Plate. If so...

Uncultivated Microorganisms
  • Language: en
  • Pages: 208

Uncultivated Microorganisms

  • Type: Book
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  • Published: 2009-07-23
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  • Publisher: Springer

In 1898, an Austrian microbiologist Heinrich Winterberg made a curious observation: the number of microbial cells in his samples did not match the number of colonies formed on nutrient media (Winterberg 1898). About a decade later, J. Amann qu- tified this mismatch, which turned out to be surprisingly large, with non-growing cells outnumbering the cultivable ones almost 150 times (Amann 1911). These papers signify some of the earliest steps towards the discovery of an important phenomenon known today as the Great Plate Count Anomaly (Staley and Konopka 1985). Note how early in the history of microbiology these steps were taken. Detecting the Anomaly almost certainly required the Plate. If so...

Manual of Industrial Microbiology and Biotechnology
  • Language: en
  • Pages: 1894

Manual of Industrial Microbiology and Biotechnology

A rich array of methods and discussions of productive microbial processes. • Reviews of the newest techniques, approaches, and options in the use of microorganisms and other cell culture systems for the manufacture of pharmaceuticals, industrial enzymes and proteins, foods and beverages, fuels and fine chemicals, and other products. • Focuses on the latest advances and findings on the current state of the art and science and features a new section on the microbial production of biofuels and fine chemicals, as well as a stronger emphasis on mammalian cell culture methods. • Covers new methods that enhance the capacity of microbes used for a wide range of purposes, from winemaking to pharmaceuticals to bioremediation, at volumes from micro- to industrial scale.

The Human Microbiota
  • Language: en
  • Pages: 348

The Human Microbiota

The Human Microbiota offers a comprehensive review of all human-associated microbial niches in a single volume, focusing on what modern tools in molecular microbiology are revealing about human microbiota, and how specific microbial communities can be associated with either beneficial effects or diseases. An excellent resource for microbiologists, physicians, infectious disease specialists, and others in the field, the book describes the latest research findings and evaluates the most innovative research approaches and technologies. Perspectives from pioneers in human microbial ecology are provided throughout.

Microbes in Agri-Forestry Biotechnology
  • Language: en
  • Pages: 449

Microbes in Agri-Forestry Biotechnology

  • Type: Book
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  • Published: 2022-09-22
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  • Publisher: CRC Press

This book explores recent advances on the use of microbes for agri-forestry biotechnological applications. It provides technical concepts and discussions on the use of microorganisms for processes such as bioprocessing, bioremediation, soil enhancement, aquaponics advances, and plant-host symbiosis. The book provides an overview of the microbial approach to the tools and processes used in agriculture and forestry that make or modify products, improve plants for specific uses, and make use of livestock in agricultural systems. The authors discuss the main process conditions that enhance agri-forestry applications with the use of microbes and introduce the use of genetically modified (GM) microbes in agrobiotechnology. Finally, the authors explore the main technological advances in the production of secondary metabolites with potential applications in agri-forestry. This book is intended for biotechnologists, biologists, bioengineers, biochemists, microbiologists, food technologists, enzymologists, and related researchers.

Alginates: Biology and Applications
  • Language: en
  • Pages: 269

Alginates: Biology and Applications

"Alginates: Biology and Applications" provides an overview of the state of art of alginate material properties, genetics and the molecular mechanisms underlying alginate biosynthesis as well as applications of tailor-made alginates in medicine, food and biotechnology. Topics treated are: material properties of alginates, alginate production: precursor biosynthesis, polymerization and secretion, bacterial system for alginate uptake and degradation, enzymatic alginate modification, alginate gene regulation, role of alginate in bacterial biofilms, microbial production of alginates: physiology and process aspects, alginate-based blends and nano/microbeads, applications of alginates in food, alginate and its comonomer mannuronic acid: medical relevance as drugs.

(Endo)symbiotic Methanogenic Archaea
  • Language: en
  • Pages: 245

(Endo)symbiotic Methanogenic Archaea

This updated monograph deals with methanogenic endosymbionts of anaerobic protists, in particular ciliates and termite flagellates, and with methanogens in the gastrointestinal tracts of vertebrates and arthropods. Further chapters discuss the genomic consequences of living together in symbiotic associations, the role of methanogens in syntrophic degradation, and the function and evolution of hydrogenosomes, hydrogen-producing organelles of certain anaerobic protists. Methanogens are prokaryotic microorganisms that produce methane as an end-product of a complex biochemical pathway. They are strictly anaerobic archaea and occupy a wide variety of anoxic environments. Methanogens also thrive in the cytoplasm of anaerobic unicellular eukaryotes and in the gastrointestinal tracts of animals and humans. The symbiotic methanogens in the gastrointestinal tracts of ruminants and other “methanogenic” mammals contribute significantly to the global methane budget; especially the rumen hosts an impressive diversity of methanogens. This makes this updated volume an interesting read for scientists and students in Microbiology and Physiology.

Endosymbionts in Paramecium
  • Language: en
  • Pages: 252

Endosymbionts in Paramecium

Endosymbiosis is a primary force in eukaryotic cell evolution. In order to understand the molecular mechanisms involved in this mutualistic relationship, experiments to reproduce endosymbiosis are indispensable. The ciliate "Paramecium" is an ideal host for performing such studies. Topics presented in this volume are: the origins of algal and bacterial symbionts in "Paramecium", the diversity of endosymbiotic bacteria, such as "Holospora" bacteria and especially "Chlorella" species, as well as the infection and maintenance processes. The metabolic control, the regulation of circadian rhythms and photobiological aspects of the mutualistic association, as well as the killer effect of "Paramecium" and its causative agents are further points discussed.

Biosurfactants
  • Language: en
  • Pages: 220

Biosurfactants

Biosurfactants, tensio-active compounds produced by living cells, are now gaining increasing interest due to their potential applications in many different industrial areas in which to date almost exclusively synthetic surfactants have been used. Their unique structures and characteristics are just starting to be appreciated. In addition, biosurfactants are considered to be environmentally “friendly,” relatively non-toxic and biodegradable. This Microbiology Monographs volume deals with the most recent advances in the field of microbial biosurfactants, such as rhamnolipids, serrawettins, trehalolipids, mannosylerythritol lipids, sophorolipids, surfactin and other lipopeptides. Each chapter reviews the characteristics of an individual biosurfactant including the physicochemical properties, the chemical structures, the role in the physiology of the producing microbes, the biosynthetic pathways, the genetic regulation, and the potential biotechnological applications.

Amino-Acid Homopolymers Occurring in Nature
  • Language: en
  • Pages: 175

Amino-Acid Homopolymers Occurring in Nature

Microorganisms are capable of producing a wide variety of biopolymers. Homopolymer peptides, which are made up of only a single type of amino acid, are far less ubiquitous. The only two amino-acid homopolymers known to occur in nature are presented in this volume. Poly-epsilon-L-lysine is a polycationic peptide and exhibits antimicrobial activity against a wide spectrum of microorganisms. It is both safe and biodegradable and is therefore used as a food preservative in several countries. In addition, there has been great interest in medical and other applications of poly-lysine and its derivatives. In contrast, poly-gamma-glutamic acid is an unusual anionic polypeptide. It is also water soluble, biodegradable, edible, non-toxic and non-immunogenic and can be chemically modified to introduce various drugs. These features are very useful for pharmaceutical and biomedical applications. Poly-glutamic acid is also a highly attractive as a food ingredient.