Download or read book Bifidobacteria and Pediococci written by Paul James Simpson and published by . This book was released on 2005 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study had three principal aims related to pediococci and bifidobacteria and their enumeration, genomic characterisation and applicability as probiotics. Two selective edia based on mMRS with mupirocin or mixture of ampicillin, novobiocin, and vancomycin were developed for bifidobacteria and pediococci, respectively. Both media were applied to a range of cultures, powder-based products and porcine caecal samples. A detailed examination of RAPD PCR and PFGE found both methods effectively discriminated Bifidobacterium strains and Pediococcus strains and species. A detailed description of the bifidobacteria population associated with a porcine caecum was described using PFGE. The same Bifidobacterium strains were found to be associated with the epithelium and lumen contents. This implied that a dynamic interaction between adhering and non-adhering cells exists and that, for the caecum at least, bacterial growth can occur within the GIT lumen. In addition, based on subtle differences in PFGE patterns evidence for genomic plasticity was observed and this was considered to be a possible mechanism underlying long-term colonisation. Furthermore, based on a number of approaches that included 16S rDNA sequencing three known Bifidobacterium species were identified that included B. minimum a species that had only previously been isolated from sewage. Moreover, a novel species, Bifidobacterium pyschraerophilum, and a novel genus and species, Aeriscardovia aeriphila were identified and distinguished by their marked resistance to oxygen. With regards to the safety of pediococci and their use in feed, food and silage, erythromycin resistance in a P. acidilactic strain was found to be plasmid encoded. With regards to developing food-grade powders containing high levels of viable and stable bifidobacteria the intrinsic tolerance of Bifidobacterium species to heat and oxygen was established. A group of closely related species with a tolerance to both parameters were identified. Following spray drying at laboratory-scale, heat and oxygen tolerant species had high initial survival and good viability at refrigerated temperatures in skim-milk powders. However, oxygen tolerance alone did not correlate with high initial survival or good storage viability. Viability during storage at ambient temperatures was significantly reduced for all species but was greatly improved when bifidobacteria were dried using a pilot-scale fluidised-bed spray dryer. Ice cream was manufactured using bifidobacteria enriched skim-milk spray-dried powder.

Download or read book Lactic Acid Bacteria written by Wilhelm H. Holzapfel and published by John Wiley & Sons. This book was released on 2014-04-29 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lactic Acid Bacteria Biodiversity and Taxonomy Lactic Acid Bacteria Biodiversity and Taxonomy Edited by Wilhelm H. Holzapfel and Brian J.B. Wood The lactic acid bacteria (LAB) are a group of related microorganisms that are enormously important in the food and beverage industries. Generally regarded as safe for human consumption (and, in the case of probiotics, positively beneficial to human health), the LAB have been used for centuries, and continue to be used worldwide on an industrial scale, in food fermentation processes, including yoghurt, cheeses, fermented meats and vegetables, where they ferment carbohydrates in the foods, producing lactic acid and creating an environment unsuitable for the survival of food spoilage organisms and pathogens. The shelf life of the product is thereby extended, but of course these foods are also enjoyed around the world for their organoleptic qualities. They are also important to the brewing and winemaking industries, where they are often undesirable intruders but can in specific cases have desirable benefits. The LAB are also used in producing silage and other agricultural animal feeds. Clinically, they can improve the digestive health of young animals, and also have human medical applications. This book provides a much-needed and comprehensive account of the current knowledge of the LAB, covering the taxonomy and relevant biochemistry, physiology and molecular biology of these scientifically and commercially important microorganisms. It is directed to bringing together the current understanding concerning the organisms’ remarkable diversity within a seemingly rather constrained compass. The genera now identified as proper members of the LAB are treated in dedicated chapters, and the species properly recognized as members of each genus are listed with detailed descriptions of their principal characteristics. Each genus and species is described using a standardized format, and the relative importance of each species in food, agricultural and medical applications is assessed. In addition, certain other bacterial groups (such as Bifidobacterium) often associated with the LAB are given in-depth coverage. The book will also contribute to a better understanding and appreciation of the role of LA B in the various ecosystems and ecological niches that they occupy. In summary, this volume gathers together information designed to enable the organisms’ fullest industrial, nutritional and medical applications. Lactic Acid Bacteria: Biodiversity and Taxonomy is an essential reference for research scientists, biochemists and microbiologists working in the food and fermentation industries and in research institutions. Advanced students of food science and technology will also find it an indispensable guide to the subject. Also available from Wiley Blackwell The Chemistry of Food Jan Velisek ISBN 978-1-118-38384-1 Progress in Food Preservation Edited by Rajeev Bhat, Abd Karim Alias and Gopinadham Paliyath ISBN 978-0-470-65585-6

Download or read book Lactic Acid Bacteria written by Gabriel Vinderola and published by CRC Press. This book was released on 2019-04-08 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through four editions, Lactic Acid Bacteria: Microbiological and Functional Aspects, has provided readers with information on the how’s and why’s lactic acid-producing fermentation improves the storability, palatability, and nutritive value of perishable foods. Thoroughly updated and fully revised, with 12 new chapters, the Fifth Edition covers regulatory aspects globally, new findings on health effects, properties and stability of LAB as well as production of target specific LAB. The new edition also addresses the technological use of LAB in various fermentations of food, feed and beverage, and their safety considerations. It features the detailed description of the main genera of LAB as well as such novel bacteria as fructophilic LAB and novel probiotics and discusses such new targets as cognitive function, metabolic health, respiratory health and probiotics. Key Features: In 12 new chapters, findings are presented on health effects, properties and stability of LAB as well as production of target specific LAB Covers such novel bacteria as fructophilic LAB and novel probiotics Presents new discoveries related to the mechanisms of lactic acid bacterial metabolism and function Covers the benefits of LAB, both in fermentation of dairy, cereal, meat, vegetable and silage, and their health benefits on humans and animals Discusses the less-known role of LAB as food spoilers Covers the global regulatory framework related to safety and efficacy

Download or read book Genetics of Lactic Acid Bacteria written by Brian J.B. Wood and published by Springer Science & Business Media. This book was released on 2003-09-30 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with an introduction to relevant genetic techniques, chapters cover all major groups of LAB, including the Bifidobacteria; plasmid biology, gene transfer, phage, and sugar metabolism; gene expression of various LAB; applications for genetically engineered LAB, including the emerging field of medical applications; and the legal and consumer issues that arise from such applications. This resource will set the benchmark for the state of knowledge of LAB genetics and should be of value to food scientists and other researchers working with LAB in its present and future capacities. Professionals using lactic acid bacteria (LAB) for research and/or as working organisms, whether in food and dairy fermentations or in the exciting new field of clinical delivery agents, will find this book invaluable. In addition, professors teaching under- and post-graduates in microbiology, and postgraduate research students will also find this an essential reference work.

Download or read book Molecular Wine Microbiology written by Alfonso V. Carrascosa Santiago and published by Academic Press. This book was released on 2011-05-23 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Wine Microbiology features rigorous scientific content written at a level comprehensible for wine professionals as well as advanced students. It includes information on production and spoilage issues, the microbial groups relevant for wine production and microbial wine safety. Microbiology has long been recognized as a key tool in studying wine production, however only recently have wine microbiology studies been addressed at a molecular level, increasing the understanding of how microbiology impacts not only the flavor quality of the wine, but also its safety. Understanding, at a molecular level, how a starter culture can impact ethanol, glycerol, volatile phenols, mannoproteins, biogenic amines or ochratoxin A of a wine are just some of the core points that must be considered in order to achieve maximium consumer acceptability while addressing safety concerns during processing and storage. While other books offer insights into the technological aspects of enology, this book is written by expert microbiologists, who explore the positive and negative impacts of gene function in the production of wine, from a microbiological point of view. Winner of the 2012 Jury Award in Enology from the International Organisation of Vine and Wine Presents the most current methods of studying the microbiology of wine Includes latest identification and typing methods, reducing identification time from days and weeks to minutes and hours Provides important knowledge about the impact of microbiological factors at the molecular level for reduction of wine spoilage and increased wine quality and safety

Download or read book Prebiotics and Probiotics Science and Technology written by Dimitris Charalampopoulos and published by Springer Science & Business Media. This book was released on 2009-08-12 with total page 1273 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview on the advances in the field, this volume presents the science underpinning the probiotic and prebiotic effects, the latest in vivo studies, the technological issues in the development and manufacture of these types of products, and the regulatory issues involved. It will be a useful reference for both scientists and technologists working in academic and governmental institutes, and the industry.

Download or read book Lactic Acid Bacteria and Bifidobacteria written by Kenji Sonomoto and published by Caister Academic Press Limited. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lactic acid bacteria (LAB) and bifidobacteria are amongst the most important groups of microorganisms used in the food industry. They are also thought to have health-promoting abilities and many are used as probiotics for the prevention, alleviation and treatment of intestinal disorders. This book reviews research in these areas.

Download or read book Probiotics and Prebiotics in Human Nutrition and Health written by Venketeshwer Rao and published by BoD – Books on Demand. This book was released on 2016-07-13 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Probiotic microorganisms are recognised as being beneficial for human health. Prebiotics are substrates that are used preferentially by the probiotic bacteria for their growth. A great deal of interest has been generated in recent years in identifying probiotic bacteria and prebiotics, their characterization, mechanisms of action and their role in the prevention and management of human health disorders. Together they are referred to as synbiotic. This book is in response to the need for more current and global scope of probiotics and prebiotics. It contains chapters written by internationally recognized authors. The book has been planned to meet the needs of the researchers, health professionals, government regulatory agencies and industries. This book will serve as a standard reference book in this important and fast-growing area of probiotics and prebiotics in human nutrition and health.

Download or read book Bacteriocins of Lactic Acid Bacteria written by Luc De Vuyst and published by Springer. This book was released on 2012-12-06 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: As antibacterial compounds, bacteriocins have always lived in the shadow of those medically important, efficient and often broad-spectrum low-molecular mass antimicrobials, well known even to laypeople as antibiotics. This is despite the fact that bacteriocins were discovered as early as 1928, a year before the penicillin saga started. Bacteriocins are antimicrobial proteins or oligopeptides, displaying a much narrower activity spectrum than antibiotics; they are mainly active against bacterial strains taxonomically closely related to the producer strain, which is usually immune to its own bacteriocin. They form a heterogenous group with regard to the taxonomy of the producing bacterial strains, mode of action, inhibitory spectrum and protein structure and composition. Best known are the colicins and microcins produced by Enterobacteriaceae. Many other Gram-negative as well as Gram-positive bacteria have now been found to produce bacteriocins. In the last decade renewed interest has focused on the bacteriocins from lactic acid bacteria, which are industrially and agriculturally very important. Some of these compounds are even active against food spoilage bacteria and endospore formers and also against certain clinically important (food-borne) pathogens. Recently, bacteriocins from lactic acid bacteria have been studied intensively from every possible scientific angle: microbiology, biochemistry, molecular biology and food technology. Intelligent screening is going on to find novel compounds with unexpected properties, just as has happened (and is still happening) with the antibiotics. Knowledge, especially about bacteriocins from lactic acid bacteria, is accumulating very rapidly.

Download or read book Biotechnology of Lactic Acid Bacteria written by Fernanda Mozzi and published by John Wiley & Sons. This book was released on 2015-09-04 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lactic acid bacteria (LAB) have historically been used as starter cultures for the production of fermented foods, especially dairy products. Over recent years, new areas have had a strong impact on LAB studies: the application of omics tools; the study of complex microbial ecosystems, the discovery of new LAB species, and the use of LAB as powerhouses in the food and medical industries. This second edition of Biotechnology of Lactic Acid Bacteria: Novel Applications addresses the major advances in the fields over the last five years. Thoroughly revised and updated, the book includes new chapters. Among them: The current status of LAB systematics; The role of LAB in the human intestinal microbiome and the intestinal tract of animals and its impact on the health and disease state of the host; The involvement of LAB in fruit and vegetable fermentations; The production of nutraceuticals and aroma compounds by LAB; and The formation of biofilms by LAB. This book is an essential reference for established researchers and scientists, clinical and advanced students, university professors and instructors, nutritionists and food technologists working on food microbiology, physiology and biotechnology of lactic acid bacteria.

Download or read book Enological Chemistry written by Juan Moreno and published by Academic Press. This book was released on 2012-05-30 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enological Chemistry is written for the professional enologist tasked with finding the right balance of compounds to create or improve wine products. Related titles lack the appropriate focus for this audience, according to reviewers, failing either to be as comprehensive on the topic of chemistry, to include chemistry as part of the broader science of wine, or targeting a less scientific audience and including social and historical information not directly pertinent to the understanding of the role of chemistry in successful wine production. The topics in the book have been sequenced identically with the steps of the winemaking process. Thus, the book describes the most salient compounds involved in each vinification process, their properties and their balance; also, theoretical knowledge is matched with its practical application. The primary aim is to enable the reader to identify the specific compounds behind enological properties and processes, their chemical balance and their influence on the analytical and sensory quality of wine, as well as the physical, chemical and microbiological factors that affect their evolution during the winemaking process. Organized according to the winemaking process, guiding reader clearly to application of knowledge Describes the most salient compounds involved in each step enabling readers to identify the specific compounds behind properties and processes and effectively work with them Provides both theoretical knowledge and practical application providing a strong starting point for further research and development

Download or read book The Bifidobacteria and Related Organisms written by Paola Mattarelli and published by Academic Press. This book was released on 2017-09-20 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bifidobacteria and Related Organisms: Biology, Taxonomy, Applications brings together authoritative reviews on all aspects of Bifidobacteria and related genera. Their place within the Phylum Actinobacteria is discussed first, and this is followed by descriptions of the genera Bifidobacterium, Alloscardovia, Aeriscardovia, Bombiscardovia, Gardnerella, Metascardovia, Parascardovia and Scardovia and the currently accredited species within those genera. The increased availability of genome sequences and molecular tools for studying bifidobacteria provides important information about their taxonomy, physiology and interactions with their host. Also considerations about common bifidobacterial core maintenance during the mutual coevolution of a host and its intestinal microbes could be relevant for health claims for the ability of symbiotic gut bacteria to provide health benefits to their host, and for evaluating such claims in scientifically valid experiments. Chemotaxonomy is important to our understanding of these genera and so is considered along with physiological and biochemical aspects before proceeding to examine clinical and other practical aspects. The ability to maintain pure cultures and to grow cells in industrial quantities when required for applications requires that the cells’ environmental and nutritional needs are well understood. Some species are important clinically and as animal digestive tract synbionts—and even play a part in honey production—so these matters are considered along with milk oligosaccharides’ roles in gut flora development in neonates. Presents information on all bacteria in this group in one place Provides applications and technological considerations placed alongside more academic matters such as nomenclature and phylogeny Includes basic information on the beneficial role of bifidobacteria in the human gut, with particular importance for infants Provides information on genomic and gene modification technologies

Download or read book The Lactic Acid Bacteria written by Foo and published by Springer. This book was released on 1997 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on lactic acid bacteria has advanced in recent years and is assuming importance in many areas, including biotechnology, nutrition, health and food safety. Presenting the published papers of the first lactic acid bacteria computer conference, this work offers a broad review of current lactic acid bacteria research with contributions from a number of scientists. The work encompasses a range of interests, including both traditional and developing fields. The text should be useful for established researchers as well as newcomers to the field.

Download or read book Bifidobacteria and Their Role written by J.A. Kurmann and published by Springer-Verlag. This book was released on 2019-06-12 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biology of Microorganisms on Grapes in Must and in Wine written by Helmut König and published by Springer. This book was released on 2017-11-01 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of the book begins with the description of the diversity of wine-related microorganisms, followed by an outline of their primary and energy metabolism. Subsequently, important aspects of the secondary metabolism are dealt with, since these activities have an impact on wine quality and off-flavour formation. Then chapters about stimulating and inhibitory growth factors follow. This knowledge is helpful for the growth management of different microbial species. The next chapters focus on the application of the consolidated findings of molecular biology and regulation the functioning of regulatory cellular networks, leading to a better understanding of the phenotypic behaviour of the microbes in general and especially of the starter cultures as well as of stimulatory and inhibitory cell-cell interactions during wine making. In the last part of the book, a compilation of modern methods complete the understanding of microbial processes during the conversion of must to wine.This broad range of topics about the biology of the microbes involved in the vinification process could be provided in one book only because of the input of many experts from different wine-growing countries.

Download or read book The Genera of Lactic Acid Bacteria written by W.H.N Holzapfel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lactic Acid Bacteria is planned as a series in a number of volumes, and the interest shown in it appears to justify a cautious optimism that a series comprising at least five volumes will appear in the fullness of time. This being so, I feel that it is desirable to introduce the series by providing a little of the history of the events which culminated in the decision to produce such a series. I also wish to indicate the boundaries of the group 'The Lactic Acid Bacteria' as I have defined them for the present purposes, and to outline my hopes for future topics in the series. Historical background lowe my interest in the lactic acid bacteria (LAB) to the late Dr Cyril Rainbow, who introduced me to their fascinating world when he offered me a place with him to work for a PhD on the carbohydrate metabolism of some lactic rods isolated from English beer breweries by himself and others, notably Dr Dora Kulka. He was particularly interested in their preference for maltose over glucose as a source of carbohydrate for growth, expressed in most cases as a more rapid growth on the disaccharide; but one isolate would grow only on maltose. Eventually we showed that maltose was being utilised by 'direct fermentation' as the older texts called it, specifically by the phosphorolysis which had first been demonstrated for maltose by Doudoroff and his associates in their work on maltose metabolism by a strain of Neisseria meningitidis.

Download or read book Cheese Problems Solved written by P L H McSweeney and published by Elsevier. This book was released on 2007-06-30 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cheese is a unique food product which requires a significant amount of scientific knowledge to be produced successfully. However, due to the many, complex and interrelated changes which occur during cheese manufacture and ripening, it is still not possible to guarantee the production of premium quality cheese. Written by an international team of renowned contributors, Cheese problems solved provides responses to over 200 of the most frequently asked questions about cheese and the cheese-making process, in a unique and practical question-and-answer format. Opening chapters concentrate on queries regarding the preparation of cheese milk, the conversion of milk to curd, the ripening process, pathogens, cheese analysis and nutritional aspects of cheese amongst other issues. The latter half of the book discusses particular types of cheeses such as Cheddar, Grana-type cheeses, Mozzarella, Dutch-type, Swiss and Blue cheeses, to name but a few. Edited by a leading expert and with contributions from specialists within the field, Cheese problems solved is an essential reference and problem solving manual for professionals and trainees in the cheese industry. Provides responses to over 200 of the most frequently asked questions about cheese and the cheese-making process An essential reference and problem solving manual for professionals and trainees in the cheese industry Benefit from the knowledge of leading specialists in the field