Download or read book Stress Responses of Foodborne Pathogens written by Tian Ding and published by Springer Nature. This book was released on 2022-04-22 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food-borne bacterial pathogens encounter a number of stressors during food processing and preservation. More and more pathogens are able to adapt their physiological properties and/or genetic expression to survive these stressors and pose a risk to food safety and public health. This book provides the reader with a comprehensive overview of common food processing-associated stressors (e.g., heat, cold, acid, osmosis, and oxidation) and deals with the molecular basis of the respective bacterial stress response mechanisms (e.g., viable but nonculturable state, biofilm formation, sporulation, and cross-protection response). Additionally, various chapters cover the response mechanisms of foodborne pathogens to emerging nonthermal sterilisation technologies such as ultrasound, high-pressure processing, pulsed electric fields, ultraviolet light, irradiation and phytochemicals. Through this book we also learn about future prospects for the efficient control of stress adaption in foodborne pathogens to ensure maximum consumer safety. This book offers a valuable resource for researchers, graduate students, food process engineers and product developers in the fields of food science and microbiology.
Download or read book Industrial and Host Associated Stress Responses in Food Microbes Implications for Food Technology and Food Safety written by Lorena Ruiz and published by Frontiers Media SA. This book was released on 2017-10-19 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the food processing chain and after ingestion by the host, food associated bacteria have to cope with a range of stress factors such as thermal and/or non-thermal inactivation treatments, refrigeration temperatures, freeze-drying, high osmolarity, acid pH in the stomach or presence of bile salts in the intestine, that threaten bacterial survival. The accompanying plethora of microbial response and adaptation phenomena elicited by these stresses has important implications for food technology and safety. Indeed, while resistance development of pathogenic and spoilage microorganisms may impose health risks for the consumer and impart great economic losses to food industries, reduced survival of probiotic bacteria may strongly compromise their claimed health benefit attributes. As a result, substantial research efforts have been devoted in the last decades to unravel the mechanisms underlying stress response and resistance development in food associated microorganisms in order to better predict and improve (i) the inactivation of foodborne pathogens and spoilage microorganisms on the one hand and (ii) the robustness and performance of beneficial microorganisms on the other. Moreover, the recent implementation of system-wide omics and (single-)cell biology approaches is greatly boosting our insights into the modes of action underlying microbial inactivation and survival. This Research Topic aims to provide an avenue for dissemination of recent advances within the field of microbial stress response and adaptation, with a particular focus not only on food spoilage and pathogenic microorganisms but also on beneficial microbes in foods.
Download or read book Stress Response of Foodborne Microorganisms written by Hin-chung Wong and published by Nova Science Publishers. This book was released on 2012-03 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of the responses of micro-organisms to environmental stresses has led to tremendous advances in the their morphological, physiological and genetic regulation, following the introduction of novel research techniques and the efforts of food microbiologists, microbial ecologists, molecular biologists and researchers in other fields. This book is primarily targeted at food microbiologists, microbial ecologists and other professionals in academia, industry and governmental agencies. In addition, this book is a useful reference in improving the processing of food and detecting micro-organisms therein.
Download or read book Stress Responses of Lactic Acid Bacteria written by Effie Tsakalidou and published by Springer Science & Business Media. This book was released on 2011-09-06 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with the basics of lactic acid bacteria and stress response, then working into specific fields of research and current developments, Stress Responses of Lactic Acid Bacteria will serve as an essential guidebook to researchers in the field, industry professionals, and advanced students in the area. The exploration of stress responses in lactic acid bacteria began in the early 90s and revealed the differences that exist between LAB and the classical model microorganisms. A considerable amount of work has been performed on the main genera / species of LAB regarding the genes implicated and their actual role and regulation, and the mechanisms of stress resistance have also been elucidated. Recent genome and transcriptome analyses complement the proteome and genetic information available today and shed a new light on the perception of and the responses to stress by lactic acid bacteria.
Download or read book Industrial and Host Associated Stress Responses in Food Microbes Implications for Food Technology and Food Safety written by and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the food processing chain and after ingestion by the host, food associated bacteria have to cope with a range of stress factors such as thermal and/or non-thermal inactivation treatments, refrigeration temperatures, freeze-drying, high osmolarity, acid pH in the stomach or presence of bile salts in the intestine, that threaten bacterial survival. The accompanying plethora of microbial response and adaptation phenomena elicited by these stresses has important implications for food technology and safety. Indeed, while resistance development of pathogenic and spoilage microorganisms may impose health risks for the consumer and impart great economic losses to food industries, reduced survival of probiotic bacteria may strongly compromise their claimed health benefit attributes. As a result, substantial research efforts have been devoted in the last decades to unravel the mechanisms underlying stress response and resistance development in food associated microorganisms in order to better predict and improve (i) the inactivation of foodborne pathogens and spoilage microorganisms on the one hand and (ii) the robustness and performance of beneficial microorganisms on the other. Moreover, the recent implementation of system-wide omics and (single-)cell biology approaches is greatly boosting our insights into the modes of action underlying microbial inactivation and survival. This Research Topic aims to provide an avenue for dissemination of recent advances within the field of microbial stress response and adaptation, with a particular focus not only on food spoilage and pathogenic microorganisms but also on beneficial microbes in foods.
Download or read book Microbial Stress Adaptation and Food Safety written by Ahmed E. Yousef and published by CRC Press. This book was released on 2002-12-17 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book to address the subject, Microbial Stress Adaptation and Food Safety emphasizes the implications of stress adaptation and its consequences for food safety. It covers the basic science, kinetics, mechanisms, assessment, and control of stress adaptation and its impact on the safety of foods produced by minimal processing or non-thermal technologies. World renowned experts in the field provide detailed accounts of problems associated with stress adaptation and suggest practical solutions for overcoming these problems.
Download or read book Understanding Pathogen Behaviour Virulence Stress Response and Resistance written by Mansel Griffiths and published by CRC Press. This book was released on 2005-08-12 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathogens respond dynamically to their environment. Understanding their behavior is critical for two important reasons: because of emerging evidence of increased pathogen resistance to established sanitation and preservation techniques and because of the increased use of minimal processing technologies, which are potentially more vulnerable to the development of resistance. Understanding Pathogen Behavior: Virulence, Stress Response And Resistance collects and summarizes the wealth of recent research in this area and its implications for microbiologists and QA staff in the food industry. ISBN 1 85573 953 4
Download or read book Effect of Bacterial Stress Response on Pathogen Enumeration and Its Implications for Food Safety written by Huaiyu Wang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress response and virulence in food borne pathogens written by Friederike Hilbert and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Growth Temperature on the Regulation of Host Cell Invasion and Acid Stress Response in Listeria Monocytogenes written by Reid Aaron Ivy and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Listeria monocytogenes is a foodborne bacterial pathogen that has been isolated from various natural and urban environments during different seasons and has been shown to persist in food processing environments. L. monocytogenes has the ability to grow at refrigeration temperatures and is therefore a danger to makers and consumers of ready-to-eat (RTE) food products, as these foods are not subjected to a heating step prior to consumption. During transmission from the environment through foods to humans, L. monocytogenes must adapt to a range of environmental conditions including varying temperature, preservative stress, gastric stress, and host immunological defenses. Mechanisms of environmental adaptation in L. monocytogenes include two-component response regulators (RRs), alternative sigma factors, and other positive (e.g., PrfA) and negative (e.g., CtsR) transcriptional regulators. We characterized the effects of L. monocytogenes growth temperature on (i) the contributions to in vitro host cell invasion of 14 RRs, alternative sigma factor [sigma][EXP]B, virulence regulator PrfA and surface associated proteins InlA and FlaA and (ii) the response to sudden acid shock. Overall, invasion was higher for L. monocytogenes grown at 30[DEGREE]C compared to 37[DEGREE]C. RR mutants "cheY and "degU were invasiondeficient when grown at 30[DEGREE]C, but not 37[DEGREE]C. We observed 37[DEGREE]C-growth-dependent functional synergisms between !B and PrfA in contributing to host cell invasion and contributory synergisms between FlaA and InlA at both temperatures. Bacteria grown at 37[DEGREE]C were more resistant to HCl acid shock (pH 3.5) than cells grown at 7[DEGREE]C. For cells grown at 37[DEGREE]C, the transcriptional response to acid treatment involved the induction of genes with prior implication in acid response and intracellular survival, whereas the response of 7[DEGREE]C-grown cells involved the induction of two large operons of bacteriophage genes, which may explain the increased survival of 37[DEGREE]C grown cells. Our data show that growth temperature affects regulation of host cell invasion and the response to acid shock, which are both vital stages in L. monocytogenes transmission. Therefore, growth temperature should be considered an important variable in modeling L. monocytogenes stress survival and virulence.
Download or read book Industrial and Environmental Biotechnology written by Nuzhat Ahmed and published by Horizon Press. This book was released on 2014-04-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contamination of the environment by herbicides, pesticides, solvents, various industrial byproducts (including toxic metals, radionucleotides and metalloids) is of enormous economic and environmental significance. Biotechnology can be used to develop "green" or environmentally friendly solutions to these problems by harnessing the ability of bacteria to adapt metabolic pathways, or recruit new genes to metabolise harmful compounds into harmless byproducts. In addition to its role in cleaning-up the environment, biotechnology can be used for the production of novel compounds with both agricultural and industrial applications. Internationally acclaimed authors from diverse fields present comprehensive reviews of all aspects of Industrial and Environmental Biotechnology. Chapters concerned with environmental biotechnology cover two major categories of pollutants: organic compounds and metals. Organic pollutants include cyclic aromatic compounds, with/without nitrogenous or chloride substitutions while metal pollutants include copper, chromate, silver, arsenic and mercury. The genetic basis of bioremediation and the microbial processes involved are examined, and the current and/or potential applications of bioremediation are discussed. The use of biotechnology for industrial and agricultural applications includes a chapter on the use of enzymes as biocatalysts to synthesize novel opiate derivatives of medical value. The conversion of low-value molasses to higher value products by biotechnological methods and the use tissue culture methods to improve sugar cane and potatoes crop production is discussed.
Download or read book Foodborne Pathogens written by Joshua B. Gurtler and published by Springer. This book was released on 2017-06-14 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foodborne illnesses continue to be a major public health concern. All members of a particular bacterial genera (e.g., Salmonella, Campylobacter) or species (e.g., Listeria monocytogenes, Cronobacter sakazakii) are often treated by public health and regulatory agencies as being equally pathogenic; however, this is not necessarily true and is an overly conservative approach to ensuring the safety of foods. Even within species, virulence factors vary to the point that some isolates may be highly virulent, whereas others may rarely, if ever, cause disease in humans. Hence, many food safety scientists have concluded that a more appropriate characterization of bacterial isolates for public health purposes could be by virotyping, i.e., typing food-associated bacteria on the basis of their virulence factors. The book is divided into two sections. Section I, “Foodborne Pathogens and Virulence Factors,” hones in on specific virulence factors of foodborne pathogens and the role they play in regulatory requirements, recalls, and foodborne illness. The oft-held paradigm that all pathogenic strains are equally virulent is untrue. Thus, we will examine variability in virulence between strains such as Listeria, Salmonella, Campylobacter, Cronobacter, etc. This section also examines known factors capable of inducing greater virulence in foodborne pathogens. Section II, “Foodborne Pathogens, Host Susceptibility, and Infectious Dose” , covers the ability of a pathogen to invade a human host based on numerous extraneous factors relative to the host and the environment. Some of these factors include host age, immune status, genetic makeup, infectious dose, food composition and probiotics. Readers of this book will come away with a better understanding of foodborne bacterial pathogen virulence factors and pathogenicity, and host factors that predict the severity of disease in humans.
Download or read book Foodborne Bacterial Pathogens written by Arnaud Bridier and published by Humana. This book was released on 2018-12-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a compilation of various representative techniques and approaches currently used to study bacterial foodborne pathogens. Chapters guide the reader through bacterial pathogen detection and quantification in food, molecular, phenotypic, metabolic characterization of food pathogens, and ecology of foodborne bacterial pathogens. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Foodborne Bacterial Pathogens : Methods and Protocols aims to server as a guide both for researchers, students, and those in the food industry who want to have an overview of current approaches and protocols used to study bacterial foodborne pathogens.
Download or read book Control of Foodborne Microorganisms written by Vijay K. Juneja and published by CRC Press. This book was released on 2001-09-27 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the latest research in the control of foodborne pathogens. Emphasizes traditional and emerging techniques as well as current applications for the inactivation of microorganisms to reduce illness and enhance food safety and quality.
Download or read book Predictive Microbiology written by Thomas Alexander McMeekin and published by Wiley-Blackwell. This book was released on 1993 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four authors with backgrounds in food microbiology, food chemistry, mathematics, and statistics, explain how techniques of predictive microbiology can allow an objective evaluation of the effects of processing, distribution, and storage on the microbiological safety and quality of foods. The trick is to understand the microbial ecology of a process or of a food at a particular point in the chain, then use mathematical relationships between microbial growth and the expected environmental conditions, to predict the growth or survival of selected organisms. Annotation copyright by Book News, Inc., Portland, OR
Download or read book Encyclopedia of Food Microbiology written by Carl A. Batt and published by Academic Press. This book was released on 2014-04-02 with total page 3243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the world's leading scientists and spanning over 400 articles in three volumes, the Encyclopedia of Food Microbiology, Second Edition is a complete, highly structured guide to current knowledge in the field. Fully revised and updated, this encyclopedia reflects the key advances in the field since the first edition was published in 1999 The articles in this key work, heavily illustrated and fully revised since the first edition in 1999, highlight advances in areas such as genomics and food safety to bring users up-to-date on microorganisms in foods. Topics such as DNA sequencing and E. coli are particularly well covered. With lists of further reading to help users explore topics in depth, this resource will enrich scientists at every level in academia and industry, providing fundamental information as well as explaining state-of-the-art scientific discoveries. This book is designed to allow disparate approaches (from farmers to processors to food handlers and consumers) and interests to access accurate and objective information about the microbiology of foods Microbiology impacts the safe presentation of food. From harvest and storage to determination of shelf-life, to presentation and consumption. This work highlights the risks of microbial contamination and is an invaluable go-to guide for anyone working in Food Health and Safety Has a two-fold industry appeal (1) those developing new functional food products and (2) to all corporations concerned about the potential hazards of microbes in their food products
Download or read book Microbial Endocrinology written by Mark Lyte and published by Springer Science & Business Media. This book was released on 2010-04-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial endocrinology represents a newly emerging interdisciplinary field that is formed by the intersection of the fields of neurobiology and microbiology. This book will introduce a new perspective to the current understanding not only of the factors that mediate the ability of microbes to cause disease, but also to the mechanisms that maintain normal homeostasis. The discovery that microbes can directly respond to neuroendocrine hormones, as evidenced by increased growth and production of virulence-associated factors, provides for a new framework with which to investigate how microorganisms interface not only with vertebrates, but also with invertebrates and even plants. The reader will learn that the neuroendocrine hormones that one most commonly associates with mammals are actually found throughout the plant, insect and microbial communities to an extent that will undoubtedly surprise many, and most importantly, how interactions between microbes and neuroendocrine hormones can influence the pathophysiology of infectious disease.
