food microbiology fundamentals challenges and health implications

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Food Microbiology

Author : Elaine Perkins
ISBN : 1634833856
Genre :
File Size : 32. 71 MB
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The authors of this book discuss the most recent advancements in food microbiology research. Chapters include a review on the factors which help to choose the conditions that assure food microbial stability and contribute to food safety and quality; an examination of the prevalence of one of the most important food-borne pathogens, L. monocytogenes, particularly in fruits and vegetables; emerging bacteria detection methods in food and culture media using mass spectrometry (MS); detection techniques of Salmonella, of which infections from animal food play an important role in public health and particularly in food safety; and case studies of yeasts in fruit wine fermentations, which can have important implications for developing fruit wine and can contribute to an important advancements in any fermentation products.

The Microbiological Safety Of Low Water Activity Foods And Spices

Author : Joshua B. Gurtler
ISBN : 9781493920624
Genre : Technology & Engineering
File Size : 78. 27 MB
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Low water activity (aw) and dried foods such as dried dairy and meat products, grain-based and dried ready-to-eat cereal products, powdered infant formula, peanut and nut pastes, as well as flours and meals have increasingly been associated with product recalls and foodborne outbreaks due to contamination by pathogens such as Salmonella spp. and enterohemorrhagic E. coli. In particular, recent foodborne outbreaks and product recalls related to Salmonella-contaminated spices have raised the level of public health concern for spices as agents of foodborne illnesses. Presently, most spices are grown outside the U.S., mainly in 8 countries: India, Indonesia, China, Brazil, Peru, Madagascar, Mexico and Vietnam. Many of these countries are under-developed and spices are harvested and stored with little heed to sanitation. The FDA has regulatory oversight of spices in the United States; however, the agency’s control is largely limited to enforcing regulatory compliance through sampling and testing only after imported foodstuffs have crossed the U.S. border. Unfortunately, statistical sampling plans are inefficient tools for ensuring total food safety. As a result, the development and use of decontamination treatments is key. This book provides an understanding of the microbial challenges to the safety of low aw foods, and a historic backdrop to the paradigm shift now highlighting low aw foods as vehicles for foodborne pathogens. Up-to-date facts and figures of foodborne illness outbreaks and product recalls are included. Special attention is given to the uncanny ability of Salmonella to persist under dry conditions in food processing plants and foods. A section is dedicated specifically to processing plant investigations, providing practical approaches to determining sources of persistent bacterial strains in the industrial food processing environment. Readers are guided through dry cleaning, wet cleaning and alternatives to processing plant hygiene and sanitation. Separate chapters are devoted to low aw food commodities of interest including spices, dried dairy-based products, low aw meat products, dried ready-to-eat cereal products, powdered infant formula, nuts and nut pastes, flours and meals, chocolate and confectionary, dried teas and herbs, and pet foods. The book provides regulatory testing guidelines and recommendations as well as guidance through methodological and sampling challenges to testing spices and low aw foods for the presence of foodborne pathogens. Chapters also address decontamination processes for low aw foods, including heat, steam, irradiation, microwave, and alternative energy-based treatments.

Food Microbiology

Author : Michael P. Doyle
ISBN : 9781555816261
Genre : Science
File Size : 56. 20 MB
Format : PDF
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This essential reference emphasizes the molecular and mechanistic aspects of food microbiology in one comprehensive volume. • Addresses the field's major concerns, including spoilage, pathogenic bacteria, mycotoxigenic molds, viruses, prions, parasites, preservation methods, fermentation, beneficial microorganisms, and food safety. • Details the latest scientific knowledge and concerns of food microbiology • Offers a description of the latest and most advanced techniques for detecting, analyzing, tracking, and controlling microbiological hazards in food. • Serves as significant reference book for professionals who conduct research, teach food microbiology courses, analyze food samples, conduct epidemiologic investigations, and craft food safety policies.

Microbiological Risk Assessment In Food Processing

Author : M. Brown
ISBN : 9781855736689
Genre : Technology & Engineering
File Size : 69. 81 MB
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Microbiological risk assessment (MRA) is one of the most important recent developments in food safety management. Adopted by Codex Alimentarius and many other international bodies, it provides a structured way of identifying and assessing microbiological risks in food. Edited by two leading authorities, and with contributions by international experts in the field, Microbiological risk assessment provides a detailed coverage of the key steps in MRA and how it can be used to improve food safety. The book begins by placing MRA within the broader context of the evolution of international food safety standards. Part one introduces the key steps in MRA methodology. A series of chapters discusses each step, starting with hazard identification and characterisation before going on to consider exposure assessment and risk characterisation. Given its importance, risk communication is also covered. Part two then considers how MRA can be implemented in practice. There are chapters on implementing the results of a microbiological risk assessment and on the qualitative and quantitative tools available in carrying out a MRA. It also discusses the relationship of MRA to the use of microbiological criteria and another key tool in food safety management, Hazard Analysis and Critical Control Point (HACCP) systems. With its authoritative coverage of both principles and key issues in implementation, Microbiological risk assessment in food processing is a standard work on one of the most important aspects of food safety management. Provides a detailed coverage of the key steps in microbiological risk assessment (MRA) and how it can be used to improve food safety Places MRA within the broader context of the evolution of international food safety standards Introduces the key steps in MRA methodology, considers exposure assessment and risk characterisation, and covers risk communication

Thermal Food Processing

Author : Da-Wen Sun
ISBN : 9781439876794
Genre : Technology & Engineering
File Size : 55. 29 MB
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Thermal processing remains one of the most important processes in the food industry. Now in its second edition, Thermal Food Processing: New Technologies and Quality Issues continues to explore the latest developments in the field. Assembling the work of a worldwide panel of experts, this volume highlights topics vital to the food industry today and pinpoints the trends in future research and development. Topics discussed include: Thermal properties of foods, including heat capacity, conductivity, diffusivity, and density Heat and mass transfer and related engineering principles, mechanisms, and models The development and application of deterministic heat transfer models for predicting internal product temperatures Modeling thermal processing using artificial neural networks (ANN) and computational fluid dynamics (CFD) Thermal processing of meat, poultry, fish, and dairy products; canned foods; ready meals; and vegetables The effect of ultrahigh temperature (UHT) treatment processing on milk, including the impact on nutrient composition, safety, and organoleptic aspects Ohmic, radio frequency (RF) dialectric, infrared, and pressure-assisted heating pH-assisted thermal processing In addition to updating all content, this second edition includes five new chapters: Thermal Effects in Food Microbiology, Modeling Thermal Microbial Inactivation Kinetics, Thermal Processing of Food and Fruit Juices, Aseptic Processing and Packaging, and Microwave Heating. The final chapter of the book examines systems used in the evaluation of thermal processes and the development of time temperature integrators (TTIs) to ensure the safety of thermally processed food. An up-to-date survey of essential techniques and the science behind them, this volume is a critical reference for food industry professionals.

Controlling Salmonella In Poultry Production And Processing

Author : Scott M. Russell, Ph.D.
ISBN : 9781439821114
Genre : Technology & Engineering
File Size : 37. 98 MB
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Salmonella is a major pathogen that can result in deadly foodborne illness. The Centers for Disease Control and Prevention (CDC) estimates that there are 1.4 million cases of Salmonella poisoning each year in the United States from a variety of causes, with undercooked poultry and eggs being the prime culprits. Therefore, intervention strategies are vital to reducing its occurrence. Controlling Salmonella in Poultry Production and Processing provides a complete analysis of the challenges faced in controlling Salmonella in this industry and keeping the public safe from this threat. Author Scott M. Russell, Ph.D., works closely with the poultry industry throughout the United States and Canada and with companies in Central and South America, Europe, and China. In this volume, he explores: The origin of Salmonella in poultry Intervention strategies for controlling Salmonella during breeding, hatching, grow-out, transportation, and processing How to design a processing plant to eliminate Salmonella How to verify intervention strategies to ensure they are working Increasing yield during processing while controlling Salmonella New regulations being proposed by USDA-FSIS and their impact on poultry companies regarding competition and international exportation of products The differences between the EU and the U.S. with regard to Salmonella control Providing readers with numerous examples of real-world experiences, Dr. Russell offers knowledge gleaned from traveling to poultry plants throughout the world over an 18-year period, assisting processors with identifying the sources of Salmonella in their operations, and developing successful intervention strategies.

Toward Safer Food

Author : Sandra Professor Hoffmann
ISBN : 9781136524516
Genre : Law
File Size : 84. 60 MB
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In 1998, a National Academy of Sciences panel called for an integrated, risk-based food safety system. This goal is widely embraced, but there has been little advance in thinking about how to integrate knowledge about food safety risks into a system- wide risk analysis framework. Such a framework is the essential scientific basis for better priority setting and resource allocation to improve food safety. Sandra Hoffmann and Michael Taylor bring together leading scientists, risk analysts, and economists, as well as experienced regulators and policy analysts, to better define the priority setting problem and focus on the scientific and intellectual resources available to construct a risk analysis framework for improving food safety. Toward Safer Food provides a common starting point for discussions about how to construct this framework. The book includes a multi-disciplinary introduction to the existing data, research, and methodological and conceptual approaches on which a system-wide risk analysis framework must draw. It also recognizes that efforts to improve food safety will be influenced by the current institutional context, and provides an overview of the ways in which food safety law and administration affect priority setting. Hoffman and Taylor intend their book to be accessible to people from a wide variety of backgrounds. At the same time, they retain the core conceptual sophistication needed to understand the challenges that are inherent in improving food safety. The editors hope that this book will help the U.S. move beyond a call for an integrated, risk-based system toward its actual construction.

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