This book provides an overview of the physiological basis of lactic acid bacteria and their applications in minimizing foodborne risks, such as pathogens, heavy metal pollution, biotoxin contamination and food‐based allergies. While highlighting the mechanisms responsible for these biological effects, it also addresses the challenges and opportunities that lactic acid bacteria represent in food safety management. It offers a valuable resource for researchers, graduate students, nutritionists and product developers in the fields of food science and microbiology.
Despite advances in hygiene, food treatment, and food processing, diseases caused by foodborne pathogens continue to constitute a worldwide public health concern. Ensuring food safety to protect public health remains a significant challenge in both developing and developed nations. Food Safety and Human Health provides a framework to manage food safety risks and assure a safe food system. Political, economic, and ecological changes have led to the re-emergence of many foodborne pathogens. The globalization of food markets, for example, has increased the challenge to manage the microbial risks. This reference will help to identify potential new approaches in the development of new microbiologically safe foods that will aid in preventing food borne illness outbreaks and provides the basic principles of food toxicology, food processing, and food safety. Food Safety and Human Health is an essential resource to help students, researchers, and industry professionals understand and address day-to-day problems regarding food contamination and safety. - Encompasses the first pedagogic treatment of the entire range of toxic compounds found naturally in foods or introduced by industrial contaminatio - Identifies areas of vital concern to consumers, such as toxicological implications of food, and human health implications of food processing - Focuses on safety aspects of genetically modified foods and the range of processing techniques along with the important food safety laws
The control of microbiological spoilage requires an understanding of a number of factors including the knowledge of possible hazards, their likely occurrence in different products, their physiological properties and the availability and effectiveness of different preventative measures. Food spoilage microorganisms focuses on the control of microbial spoilage and provides an understanding necessary to do this.The first part of this essential new book looks at tools, techniques and methods for the detection and analysis of microbial food spoilage with chapters focussing on analytical methods, predictive modelling and stability and shelf life assessment. The second part tackles the management of microbial food spoilage with particular reference to some of the major food groups where the types of spoilage, the causative microorganisms and methods for control are considered by product type. The following three parts are then dedicated to yeasts, moulds and bacteria in turn, and look in more detail at the major organisms of significance for food spoilage. In each chapter the taxonomy, spoilage characteristics, growth, survival and death characteristics, methods for detection and control options are discussed.Food spoilage microorganisms takes an applied approach to the subject and is an indispensable guide both for the microbiologist and the non-specialist, particularly those whose role involves microbial quality in food processing operations. - Looks at tools, techniques and methods for the detection and analysis of microbial food spoilage - Discusses the management control of microbial food spoilage - Looks in detail at yeasts, moulds and bacteria
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.
This review of recent developments in our understanding of the role of microbes in sustainable agriculture and biotechnology covers a research area with enormous untapped potential. Chemical fertilizers, pesticides, herbicides and other agricultural inputs derived from fossil fuels have increased agricultural production, yet growing awareness and concern over their adverse effects on soil productivity and environmental quality cannot be ignored. The high cost of these products, the difficulties of meeting demand for them, and their harmful environmental legacy have encouraged scientists to develop alternative strategies to raise productivity, with microbes playing a central role in these efforts. One application is the use of soil microbes as bioinoculants for supplying nutrients and/or stimulating plant growth. Some rhizospheric microbes are known to synthesize plant growth-promoters, siderophores and antibiotics, as well as aiding phosphorous uptake. The last 40 years have seen rapid strides made in our appreciation of the diversity of environmental microbes and their possible benefits to sustainable agriculture and production. The advent of powerful new methodologies in microbial genetics, molecular biology and biotechnology has only quickened the pace of developments. The vital part played by microbes in sustaining our planet’s ecosystems only adds urgency to this enquiry. Culture-dependent microbes already contribute much to human life, yet the latent potential of vast numbers of uncultured—and thus untouched—microbes, is enormous. Culture-independent metagenomic approaches employed in a variety of natural habitats have alerted us to the sheer diversity of these microbes, and resulted in the characterization of novel genes and gene products. Several new antibiotics and biocatalysts have been discovered among environmental genomes and some products have already been commercialized. Meanwhile, dozens of industrial products currently formulated in large quantities from petrochemicals, such as ethanol, butanol, organic acids, and amino acids, are equally obtainable through microbial fermentation. Edited by a trio of recognized authorities on the subject, this survey of a fast-moving field—with so many benefits within reach—will be required reading for all those investigating ways to harness the power of microorganisms in making both agriculture and biotechnology more sustainable.
Lactic Acid Bacteria as Cell Factories: Synthetic Biology and Metabolic Engineering describes the most recent developments on the metabolic engineering and synthetic biology of Lactic Acid Bacteria (LAB) for production of biologically active biomolecules (enzymes, organic acids, bacteriocins, bioactive peptides, etc.), recombinant proteins, and their role in bioremediation. The book focuses on synthetic biology and metabolic engineering for the production of biologically active molecules such as bioactive peptides, polysaccharides, vitamins (Riboflavin), enzymes, organic acids (lactic and gamma-aminobutyric acid), flavor and aroma compounds, bacteriocins, recombinant proteins, etc. Individual chapters are devoted to the production of biosurfactants and their applications and the bioremediation of heavy metals by LAB from aquatic environments. Two critical chapters address Genome editing of LAB: opportunities for food, feed and pharmaceuticals and A synthetic biology approach for plasmid DNA and Recombinant protein production. This book will be a valuable resource for those working in biology, biotechnology, biological engineering, chemical engineering, microbiology, food science and technology, genetics and synthetic biology. - Explores the synthetic biology and metabolic engineering of lactic acid bacteria - Highlights LAB enzymes such as phytase and amylase applications in food processing and the removal of anti-nutrients from foods and lignocellulose bioconversion - Presents insights into biosurfactant production and possible applications - Includes information on bioremediation by LAB, biofilm production mechanism, and plasmid and recombinant protein production using synthetic biology
This Brief explores the importance of lactic acid and fermentation in the modern food industry. Although it is usually associated with milk and dairy products, lactic acid can also be found in many other fermented food products, including confectionery products, jams, frozen desserts, and pickled vegetables. In this work, the authors explain how lactic acid is produced from lactose by Lactobacillus and Streptococcus cultures, and they also emphasise its important role as pH regulator and preservative, helping to the inhibition of microbial growth in fermented foods. The Brief discusses a wide range of lactic acid’s applications as a natural additive, curing or gelling agent, flavour, food carrier, solvent, and discoloration inhibitor, among others. Readers will also find a brief overview of the current analytical methods for the quantitative and qualitative determination of lactic acid in foods.
The Fifth edition of the Compendium of Methods for the Microbiological Examination of Foods has now been fully updated. All chapters have been revised and new chapters have been added. This Compendium is the primary authority for food safety testing and presents a comprehensive selection of proven testing methods with an emphasis on accuracy, relevance, and reliability. The Compendium is a must-have for all food laboratories, food manufacturers, public health laboratories, and anyone performing food safety testing. - Publisher.
Fluid milk processing is energy intensive, with high financial and energy costs found all along the production line and supply chain. Worldwide, the dairy industry has set a goal of reducing GHG emissions and other environmental impacts associated with milk processing. Although the major GHG emissions associated with milk production occur on the farm, most energy usage associated with milk processing occurs at the milk processing plant and afterwards, during refrigerated storage (a key requirement for the transportation, retail and consumption of most milk products). Sustainable alternatives and designs for the dairy processing plants of the future are now being actively sought by the global dairy industry, as it seeks to improve efficiency, reduce costs, and comply with its corporate social responsibilities. Emerging Dairy Processing Technologies: Opportunities for the Dairy Industry presents the state of the art research and technologies that have been proposed as sustainable replacements for high temperature-short time (HTST) and ultra-high temperature (UHT) pasteurization, with potentially lower energy usage and greenhouse gas emissions. These technologies include pulsed electric fields, high hydrostatic pressure, high pressure homogenization, ohmic and microwave heating, microfiltration, pulsed light, UV light processing, and carbon dioxide processing. The use of bacteriocins, which have the potential to improve the efficiency of the processing technologies, is discussed, and information on organic and pasture milk, which consumers perceive as sustainable alternatives to conventional milk, is also provided. This book brings together all the available information on alternative milk processing techniques and their impact on the physical and functional properties of milk, written by researchers who have developed a body of work in each of the technologies. This book is aimed at dairy scientists and technologists who may be working in dairy companies or academia. It will also be highly relevant to food processing experts working with dairy ingredients, as well as university departments, research centres and graduate students.
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.
