Yeasts are the world's premier industrial micro-organisms. In addition to their wide exploitation in the production of foods, beverages and pharmaceuticals, yeasts also play significant roles as model eukaryotic cells in furthering our knowledge in the biological and biomedical sciences. In order for modern biotechnology to fully exploit the activities of yeasts, it is essential to appreciate aspects of yeast cell physiology. In recent years, however, our knowledge of yeast physiological phenomena has lagged behind that of yeast genetics and molecular biology. Yeast Physiology and Biotechnology redresses the balance by linking key aspects of yeast physiology with yeast biotechnology. Individual chapters provide broad and timely coverage of yeast cytology, nutrition, growth and metabolism - important aspects of yeast cell physiology which are pertinent to the practical uses of yeasts in industry. The final chapter reviews traditional, modern and emerging biotechnologies in which roles of yeasts in the production of industrial commodities and their value in biomedical research are fully discussed. Relevant aspects of classical and modern yeast genetics and molecular biology are fully integrated into the appropriate chapters. This up-to-date and fully referenced book is aimed at advanced undergraduate and postgraduate bioscience students,but will also prove to be a valuable source of information for yeast researchers and technologists.

Yeast - Industrial Applications is a book that covers applications and utilities of yeasts in food, chemical, energy, and environmental industries collected in 12 chapters. The use of yeasts in the production of metabolites, enzymatic applications, fermented foods, microorganism controls, bioethanol production, and bioremediation of contaminated environments is covered showing results, methodologies, and processes and describing the specific role of yeasts in them. The traditional yeast Saccharomyces cerevisiae is complemented in many applications with the use of less known non-Saccharomyces yeasts that now are being used extensively in industry. This book compiles the experience and know-how of researchers and professors from international universities and research centers.

Nicholas Money gives us a history of our interactions with one of the most important organisms in the world--yeast.

This highly researched yeast, which represents a system used by cell biologists, geneticists and molecular biologists, has been given only minimal coverage in the literature. Its properties make it an excellent organism for DNA and related biotechnology reseach. This book, which is the first attempt to collate existing information in one source, will be an invaluable aid to those initiating projects with this organism.

I belie ve that the book would provide an overview of the recent developments in the domain of yeast research with some new ideas, which could serve as an inspiration and challenge for researchers in this field. Ne w Delhi Prof. Asis Datta Dec. 24, 2007 F ormer Vice-chancellor, JNU Director, NCPGR (New Delhi) Pr eface Yeasts are eukaryotic unicellular microfungi that are widely distributed in the natural environments. Although yeasts are not as ubiquitous as bacteria in the na- ral environments, they have been isolated from terrestrial, aquatic and atmospheric environments. Yeast communities have been found in association with plants, a- mals and insects. Several species of yeasts have also been isolated from specialized or extreme environments like those with low water potential (e. g. high sugar/salt concentrations), low temperature (e. g. yeasts isolated from Antarctica), and low oxygen availability (e. g. intestinal tracts of animals). Around 1500 species of yeasts belonging to over 100 genera have been described so far. It is estimated that only 1% of the extant yeasts on earth have been described till date. Therefore, global efforts are underway to recover new yeast species from a variety of normal and extreme environments. Yeasts play an important role in food chains, and carbon, nitrogen and sulphur cycles. Yeasts can be genetically manipulated by hybridization, mutation, rare m- ing, cytoduction, spheroplast fusion, single chromosomal transfer and transfor- tion using recombinant technology. Yeasts (e. g.

The Yeasts: A Taxonomic Study is a three-volume book that covers the taxonomic aspect of yeasts. The main goal of this book is to provide important information about the identification of yeasts. It also discusses the growth tests that can be used to identify different species of yeasts, and it examines how the more important species of yeasts provide information for the selection of species needed for biotechnology. • Volume 1 discusses the identification, classification and importance of yeasts in the field of biotechnology. • Volume 2 focuses on the identification and classification of ascomycetous yeasts. • Volume 3 deals with the identification and classification of basidiomycetous yeasts, along with the genus Prototheca. - High-quality photomicrographs and line drawings - Detailed phylogenetic trees - Up-to-date, clearly presented yeast taxonomy and systematic, easy-to-use reference sequence accession numbers to allow for correct identification

Biotechnology Biotechnology is is now now established established as as a a major major area area of of technology, technology, concerned concerned with with the' the' application application of of biological biological organisms, organisms, systems systems or or processes processes to to manufac turing turing or or service service industries'. industries'. Although Although the the exploitation exploitation of of organisms organisms by by man man is is not not new, new, many many of of the the techniques techniques which which are are stimulating stimulating the the rapid rapid advances advances in in biotechnology biotechnology have have developed developed from from recent recent scientific scientific discoveries. discoveries. Throughout Throughout history history man man has, has, knowingly knowingly or or not, not, been been exploiting exploiting yeast yeast in in the the production production of of alcoholic alcoholic beverages beverages and and bread, bread, and and these these processes processes still still represent represent major major biotechnological biotechnological industries. industries. The The brewer's brewer's and and baker's baker's yeast yeast Sac charomyces charomyces cerevisiae cerevisiae is, is, however, however, also also a a favoured favoured organism organism for for the the production production of of many many new new biotechnological biotechnological products. products.

In this volume we aim to present an easy-to-read account of the genus Saccharomyces that we hope will be of value to all students and researchers wishing to exploit this important genus, be it for academic or commer cial purposes. Individual chapters have been commissioned to cover specific aspects of the biology of Saccharomyces species: growth, genetics, and metabolism, with the emphasis on methodology. Basic principles are discussed without an over-detailed, step-by-step breakdown of specific techniques, and lengthy discussions of standard molecular, biological, and biochemical techniques (e. g. , polyacrylamide gel electrophoresis, protein purification, DNA sequencing) have been avoided. We hope the volume will provide a quick reference to the current status of a wide range of Saccharomyces-specific methodologies without focusing ex clusively on recent developments in molecular techniques which can be found in the ever increasing numbers of "cloning manuals. " By necessity, much of what is described in this volume concentrates on one particular species of Saccharomyces, namely Saccharomyces cerevisiae. This is not just a reflection of the authors' interests, but indicates the extent to which this simple eukaryote has been studied by biologists from all walks of life, for all sorts of reasons. If this volume can provide a broader knowledge base to the experienced yeast researcher, or ease the path of someone just starting work with Saccharomyces, then we will have achieved our aim.

In developing countries, traditional fermentation serves many purposes. It can improve the taste of an otherwise bland food, enhance the digestibility of a food that is difficult to assimilate, preserve food from degradation by noxious organisms, and increase nutritional value through the synthesis of essential amino acids and vitamins. Although "fermented food" has a vaguely distasteful ring, bread, wine, cheese, and yogurt are all familiar fermented foods. Less familiar are gari, ogi, idli, ugba, and other relatively unstudied but important foods in some African and Asian countries. This book reports on current research to improve the safety and nutrition of these foods through an elucidation of the microorganisms and mechanisms involved in their production. Also included are recommendations for needed research.

Most information on yeasts derives from experiments with the conventional yeasts Saccaromyces cerevisiae and Schizossaccharomyces pombe, the complete nuclear and mitochondrial genome of which has also been sequenced. For all other non-conventional yeasts, investigations are in progress and the rapid development of molecular techniques has allowed an insight also into a variety of non-conventional yeasts. In this bench manual, over 70 practical protocols using 15 different non-conventional yeast species and in addition several protocols of general use are described in detail. All of these experiments on the genetics, biochemistry and biotechnology of yeasts have been contributed by renowned laboratories and have been reproduced many times. The reliable protocols are thus ideally suited also for undergraduate and graduate practical courses.