The Microbiological Quality of Food


Book Description

The Microbiological Quality of Food: Foodborne Spoilers specifically addresses the role of spoilers in food technology and how they affect the quality of food. Food spoilers represent a great challenge in food quality, determining the shelf-life of many products as they impact consumer acceptability of taste, texture, aroma, and other perceptions. Divided into four sections, the first section defines microbial spoilage of food, with special emphasis on methods for the evaluation of spoiling phenomena and the status of their regulatory framework, examining both existing regulations and possible gaps. The second section examines spoiling microorganisms, covering a range of common spoilage microorganisms, including pseudomonas, yeasts, and molds and spore formers, as well as less-common spoilers, including lactic acid bacteria and specific spoilage organisms in fish. The third section highlights spoiling phenomena within certain food types. Chapters cover dairy, fish, meat, and vegetables, and other products. The final section investigates emerging topics which point to future trends in the research of food spoilers. There is insight into microorganisms resistant to preservation, the role of biofilms in food quality, and the link between food safety and food spoilage, with a special emphasis on certain spoiling microorganisms which could be opportunistic pathogens. Written by an international team of leading authors, this book provides state-of-the-art coverage of this topic, which is essential to the shelf-life and quality of food. - Provides in-depth coverage of the different spoilers which cause the deterioration of foods, including less common spoilers not covered in other publications - Includes dedicated chapters covering the spoilage of specific products, making this book ideal for those working in the food industry - Presents a framework for future research in the area of foodborne spoilers




Laboratory Diagnosis of Infectious Diseases


Book Description

those who deal with infectious diseases on a daily This two volume work stems from the belief of the Editors that infectious diseases are not only very basis. much with us today but, more importantly, that they There are several excellent textbooks dealing will continue to playa significant global role in mor with medical microbiology, and there are equally well-recognized books devoted to infectious dis bidity and mortality in all people. A continuing need for an informed and knowledgeable community of eases. The Editors of this work, on the other hand, laboratory scientists is fundamental. Data describing were persuaded that there was a need for a publica the global impact of infectious diseases are difficult tion that would bring together the most pertinent and to come by. Fortunately, a recent thoughtful and relevant information on the principles and practice of provocative publication by Bennett et al. (1987) pro the laboratory diagnosis of infectious diseases and vides us with data derived from several consultants include clinical relationships. While this two volume that clearly delineate the impact of infectious dis text is directed toward the role of the laboratory in eases on the United States today.




Bacterial Spore Formers


Book Description

This comprehensive book describes in detail the most topical emerging areas of scientific importance involving the use of spores and covers their use as probiotics in humans and animals and also with plants. In addition authors present the emerging use of the spore as a tool for nanobiotechnology where the spore can be used for the efficient display of heterologous proteins on the spore surface. The use of this technology and systematics of spore forming bacteria, and the architecture and assembly of spores. The innovative topics covered in this book will be of particular interest to scientists working in all areas of probiotic research and vaccine technology and is recommended reading for microbiologists involved with Bacillus spp. and other spore forming bacteria.




Endospore-forming Soil Bacteria


Book Description

Aerobic endospore-forming bacteria are found in soils of all kinds, ranging from acid to alkaline, hot to cold, and fertile to desert. It is well known that endospores confer special properties upon their owners and play dominant parts in their life cycles and dispersal, and much has been written about the spores, genetics, and economic importance of these organisms. Much has also been written about soil ecology, but there is a relative dearth of literature that brings together different aspects of the behaviour and characters of endospore-formers with their contributions to soil ecosystems. This Soil Biology volume fills that gap. Following chapters that describe the current classification of these organisms, that review methods for their detection and for studying their life cycles in soils, and that examine their dispersal, other chapters show that they are active and dynamic members of soil floras that interact widely with other soil inhabitants, with roles in nitrogen fixation, denitrification, and soil remediation.




Microbiology in Dairy Processing


Book Description

An authoritative guide to microbiological solutions to common challenges encountered in the industrial processing of milk and the production of milk products Microbiology in Dairy Processing offers a comprehensive introduction to the most current knowledge and research in dairy technologies and lactic acid bacteria (LAB) and dairy associated species in the fermentation of dairy products. The text deals with the industrial processing of milk, the problems solved in the industry, and those still affecting the processes. The authors explore culture methods and species selective growth media, to grow, separate, and characterize LAB and dairy associated species, molecular methods for species identification and strains characterization, Next Generation Sequencing for genome characterization, comparative genomics, phenotyping, and current applications in dairy and non-dairy productions. In addition, Microbiology in Dairy Processing covers the Lactic Acid Bacteria and dairy associated species (the beneficial microorganisms used in food fermentation processes): culture methods, phenotyping, and proven applications in dairy and non-dairy productions. The text also reviews the potential future exploitation of the culture of novel strains with useful traits such as probiotics, fermentation of sugars, metabolites produced, bacteriocins. This important resource: Offers solutions both established and novel to the numerous challenges commonly encountered in the industrial processing of milk and the production of milk products Takes a highly practical approach, tackling the problems faced in the workplace by dairy technologists Covers the whole chain of dairy processing from milk collection and storage though processing and the production of various cheese types Written for laboratory technicians and researchers, students learning the protocols for LAB isolation and characterisation, Microbiology in Dairy Processing is the authoritative reference for professionals and students.




Biofilms in the Dairy Industry


Book Description

In recent years, the formation and impacts of biofilms on dairy manufacturing have been studied extensively, from the effects of microbial enzymes produced during transportation of raw milk to the mechanisms of biofilm formation by thermophilic spore-forming bacteria. The dairy industry now has a better understanding of biofilms and of approaches that may be adopted to reduce the impacts that biofilms have on manufacturing efficiencies and the quality of dairy products. Biofilms in the Dairy Industry provides a comprehensive overview of biofilm-related issues facing the dairy sector. The book is a cornerstone for a better understanding of the current science and of ways to reduce the occurrence of biofilms associated with dairy manufacturing. The introductory section covers the definition and basic concepts of biofilm formation and development, and provides an overview of problems caused by the occurrence of biofilms along the dairy manufacturing chain. The second section of the book focuses on specific biofilm-related issues, including the quality of raw milk influenced by biofilms, biofilm formation by thermoduric streptococci and thermophilic spore-forming bacteria in dairy manufacturing plants, the presence of pathogens in biofilms, and biofilms associated with dairy waste effluent. The final section of the book looks at the application of modelling approaches to control biofilms. Potential solutions for reducing contamination throughout the dairy manufacturing chain are also presented. Essential to professionals in the global dairy sector, Biofilms in the Dairy Industry will be of great interest to anyone in the food and beverage, academic and government sectors. This text is specifically targeted at dairy professionals who aim to improve the quality and consistency of dairy products and improve the efficiency of dairy product manufacture through optimizing the use of dairy manufacturing plant and reducing operating costs.




Bacteriological Analytical Manual


Book Description




The Diverse Faces of Bacillus Cereus


Book Description

The Diverse Faces of Bacillus cereus elucidates all characteristics of this microorganism, from its environmental and ecologic relevance, to its veterinary involvement, its clinical settings, most common B. cereus associated food poisoning episodes, and the newest airway disease pictures mimicking the inhalation of anthrax. Due to its environmental distribution, B. cereus may cause serious, even fatal human diseases. The organism shows many diverse faces, as it is not only a veterinary pathogen, but also used as a biocontrol agent to control vegetable decay due to its natural antimicrobial properties. Once considered as a mere colonizer or contaminant, Bacillus cereus is nowadays acquiring increasing importance as an agent of nosocomial infections. The book's target audience is familiar with this opportunistic pathogen and will benefit from this clear compendium on the classical and molecular techniques and procedures that may be adopted or followed to correctly identify this intriguing multi-faceted microorganism. Presents an update on the current aspects of Bacillus Cereus Elucidates all aspects of and provides a concise compendium on the recent literature of Bacillus Cereus Gives an overview of the patents proposing its use as a natural pesticide




Thermophilic Bacteria


Book Description

Thermophilic Bacteria is a comprehensive volume that describes all major bacterial groups that can grow above 60-65°C (excluding the Archaea). Over 60 different species of aerobic and anaerobic thermophilic bacteria are covered. Isolation, growth methods, characterization and identification, ecology, metabolism, and enzymology of thermophilic bacteria are examined in detail, and an extensive compilation of recent biotechnological applications and the properties of many thermostable enzymes are also included. Major topics discussed in the book include a general review on thermophilic bacteria and archaea; heterotropic bacilli; the genus Thermus; new and rare genera of aerobic heterophophs, such as Saccharococcus, Rhodothermus, and Scotohermus; aerobic chemolithoautotrophic thermophilic bacteria; obligately anaerobic thermophilic bacteria; and hyperthermophilic Thermotogales and thermophilic phototrophs. Extensive bibliographies are also provided for each chapter. The vast amount of information packed into this one volume makes it essential for all microbiologists, biochemists, molecular biologists, and students interested in the expanding field of thermophilicity. Biotechnologists will find the book useful as a source of information on thermophiles or thermostable enzymes of possible industrial use.




Aerobic Sporeforming Bacteria


Book Description

Pp. 2 -- Need for classification. pp. 3 -- Problems in classifying bacteria. pp. 4 -- Factors affecting production of acetylmethylcarbinol. pp. 8 -- Storage of fat. pp. 15 -- Agglutination responses. pp. 17 -- Bacteriophagy. pp. 21 -- Studies of dissociation. pp. 24 -- Fermentation studies. pp. 31 -- Temperature relationships of species. pp. 35 -- Rejuvenation of aberrant cultures. pp. 37 -- Mediums and methods. pp. 40 -- Key to species of genus. pp. 45 -- Descriptions of species studied: Group 1 -- Group 2 -- Group 3. pp. 49 -- Unclassified cultures. pp .129 -- Literature cited. pp. 134 -- Index to named cultures studied. pp. 145.