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Author: Efstathios Giaouris
Publisher: MDPI
ISBN: 3039435515
Category : Science
Languages : en
Pages : 100
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Book Description
Biofilms are multicellular sessile microbial communities embedded in hydrated extracellular polymeric matrices. Their formation is common in microbial life in most environments, whereas those formed on food-processing surfaces are of considerable interest in the context of food hygiene. Biofilm cells express properties that are distinct from planktonic ones, in particular, due to their notorious resistance to antimicrobial agents. Thus, a special feature of biofilms is that once they have developed, they are hard to eradicate, even when careful sanitization procedures are regularly applied. A large amount of ongoing research has investigated how and why surface-attached microbial communities develop such resistance, and several mechanisms can be acknowledged, such as heterogeneous metabolic activity, cell adaptive responses, diffusion limitations, genetic and functional diversification, and microbial interactions. The articles contained in this Special Issue deal with biofilms of some important food-related bacteria (including common pathogens such as Salmonella enterica, Listeria monocytogenes, and Staphylococcus aureus, as well as spoilage-causing spore-forming bacilli), providing novel insights into their resistance mechanisms and implications, together with novel methods (e.g., use of protective biofilms formed by beneficial bacteria, enzymes) that could be used to overcome resistance and thus improve the safety of our food supply and protect public health.
Author: Efstathios Giaouris
Publisher: MDPI
ISBN: 3039435515
Category : Science
Languages : en
Pages : 100
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Book Description
Biofilms are multicellular sessile microbial communities embedded in hydrated extracellular polymeric matrices. Their formation is common in microbial life in most environments, whereas those formed on food-processing surfaces are of considerable interest in the context of food hygiene. Biofilm cells express properties that are distinct from planktonic ones, in particular, due to their notorious resistance to antimicrobial agents. Thus, a special feature of biofilms is that once they have developed, they are hard to eradicate, even when careful sanitization procedures are regularly applied. A large amount of ongoing research has investigated how and why surface-attached microbial communities develop such resistance, and several mechanisms can be acknowledged, such as heterogeneous metabolic activity, cell adaptive responses, diffusion limitations, genetic and functional diversification, and microbial interactions. The articles contained in this Special Issue deal with biofilms of some important food-related bacteria (including common pathogens such as Salmonella enterica, Listeria monocytogenes, and Staphylococcus aureus, as well as spoilage-causing spore-forming bacilli), providing novel insights into their resistance mechanisms and implications, together with novel methods (e.g., use of protective biofilms formed by beneficial bacteria, enzymes) that could be used to overcome resistance and thus improve the safety of our food supply and protect public health.
Author: Avelino Alvarez-Ordóñez
Publisher: Frontiers Media SA
ISBN: 2889451089
Category :
Languages : en
Pages : 198
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Book Description
Materials and equipment in food processing industries are colonized by surface-associated microbial communities called biofilms. In these biostructures microorganisms are embedded in a complex organic matrix composed essentially of polysaccharides, nucleic acids and proteins. This organic shield contributes to the mechanical biofilm cohesion and triggers tolerance to environmental stresses such as dehydratation or nutrient deprivation. Notably, cells within a biofilm are more tolerant to sanitation processes and the action of antimicrobial agents than their free living (or planktonic) counterparts. Such properties make conventional cleaning and disinfection protocols normally not effective in eradicating these biocontaminants. Biofilms are thus a continuous source of persistent microorganisms, including spoilage and pathogenic microorganisms, leading to repeated contamination of processed food with important economic and safety impact. Alternatively, in some particular settings, biofilm formation by resident or technological microorganisms can be desirable, due to possible enhancement of food fermentations or as a means of bioprotection against the settlement of pathogenic microorganisms. In the last decades substantial research efforts have been devoted to unravelling mechanisms of biofilm formation, deciphering biofilm architecture and understanding microbial interactions within those ecosystems. However, biofilms present a high level of complexity and many aspects remain yet to be fully understood. A lot of attention has been also paid to the development of novel strategies for preventing or controlling biofilm formation in industrial settings. Further research needs to be focused on the identification of new biocides effective against biofilm-associated microorganisms, the development of control strategies based on the inhibition of cell-to-cell communication, and the potential use of bacteriocins, bacteriocin-producing bacteria, phage, and natural antimicrobials as anti-biofilm agents, among others. This Research Topic aims to provide an avenue for dissemination of recent advances within the “biofilms” field, from novel knowledge on mechanisms of biofilm formation and biofilm architecture to novel strategies for biofilm control in food industrial settings.
Author: Jun Lin
Publisher: Frontiers Media SA
ISBN: 2889195260
Category : Antibiotics
Languages : en
Pages : 226
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Book Description
Antibiotics represent one of the most successful forms of therapy in medicine. But the efficiency of antibiotics is compromised by the growing number of antibiotic-resistant pathogens. Antibiotic resistance, which is implicated in elevated morbidity and mortality rates as well as in the increased treatment costs, is considered to be one of the major global public health threats (www.who.int/drugresistance/en/) and the magnitude of the problem recently prompted a number of international and national bodies to take actions to protect the public (http://ec.europa.eu/dgs/health_consumer/docs/road-map-amr_en.pdf: http://www.who.int/drugresistance/amr_global_action_plan/en/; http://www.whitehouse.gov/sites/default/files/docs/carb_national_strategy.pdf). Understanding the mechanisms by which bacteria successfully defend themselves against the antibiotic assault represent the main theme of this eBook published as a Research Topic in Frontiers in Microbiology, section of Antimicrobials, Resistance, and Chemotherapy. The articles in the eBook update the reader on various aspects and mechanisms of antibiotic resistance. A better understanding of these mechanisms should facilitate the development of means to potentiate the efficacy and increase the lifespan of antibiotics while minimizing the emergence of antibiotic resistance among pathogens.
Author: Theerthankar Das
Publisher: BoD – Books on Demand
ISBN: 1803557958
Category : Science
Languages : en
Pages : 393
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Book Description
Bacterial biofilms are colonies of bacterial cells embedded in their self-produced matrix composed of polysaccharides, DNA, and proteins. They protect bacterial cells against antibiotics, antibacterial agents, soaps and detergents, and shear stress. Some of the most common biofilm-associated infections in humans include urinary tract infections, infection of wounds and surgical sites, diabetic foot ulcers, dental caries (tooth decay) and gingivitis (gum inflammation), ventilator-associated infections, sinusitis, microbial keratitis, secondary infection related to Covid-19 and other viral infections, and so on. Bacterial resistance to common antibiotics (e.g., penicillin, gentamycin, erythromycin, ciprofloxacin, etc.) is driving us to a catastrophic failure of our health systems. Strategies to develop novel antibacterial agents and technology must be prioritized to combat and eradicate biofilms and their associated challenges. This book provides a comprehensive overview of biofilms with chapters on bacterial virulence factors, quorum sensing in bacteria, antimicrobial resistance in bacteria, strategies to develop new antibacterial agents, and much more.
Author: Megh R. Goyal
Publisher: CRC Press
ISBN: 100061431X
Category : Technology & Engineering
Languages : en
Pages : 400
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Book Description
Although nanotechnology has revolutionized fields such as medicine, genetics, biology, bioengineering, mechanics, and chemistry, its increasing application in the food industry is relatively recent in comparison. Nanotechnology in the food industry is now being explored for creating new flavors, extending food shelf life, and improving food protection and nutritional value, as well as for intelligent nutrient delivery systems, “smart” foods, contaminant detection nanodevices and nanosensors, advanced food processing, antimicrobial chemicals, encapsulation, and green nanomaterials. This new three-volume set addresses a multitude of topical issues and new developments in the field. Volume 1 focuses on food preservation, food packaging, and sustainable agriculture, while Volume 2 looks at nanotechnology in food process engineering, applications of biomaterials in food products, and the use of modern nanotechnology for human health. The third volume explores the newest trends in nanotechnology for food applications for improving food delivery systems. Together, these three volumes provide a comprehensive and in-depth look at the emerging status of nanotechnology in the food processing industry, explaining the benefits and drawbacks of various methodologies that will aid in the improvement and development of food product sourcing and food hygiene monitoring methods. Volume 1 discusses emerging nanotechnolgical applications in food processing, packaging, and preservation. It focuses on using nanoparticles for safe and nutritional food production, protecting crops from pests, increasing nutritional value, and providing solutions for various environmental issues. This book especially deals with nanotechnology for controlling plant pathogens, food packaging and preservation, agricultural productivity, wastewater treatment, and bioenergy production. Volume 2 discusses nanotechnology use in non-thermal techniques such as high-pressure processing (HPP), pulsed electric fields (PEFs), pulsed light, ultraviolet, microwave, ohmic heating, electrospinning, and nano- and microencapsulation. This volume looks at the role and application of minimal processing techniques such as ozone treatment, vacuum drying, osmotic dehydration, dense phase carbon dioxide treatment, and high-pressure assisted freezing. The successful applications of nanotechnologies on juices, meat and fish, fruits and vegetable slices, food surface, purees, milk and milk products, extraction, drying enhancement, and encapsulation of micro-macro nutrients are also considered. The volume also presents several computer-aided techniques that are emerging in the food processing sector, such as robotics, radio frequency identification (RFID), three-dimensional food printing, artificial intelligence, etc. Significant role of food properties in design of specific food and edible packaging films have been elucidated. Nanotechnology Horizons in Food Process Engineering: Volume 3: Trends, Nanomaterials, and Food Delivery provides an overview of the current trends in nanotechnology for food applications and food delivery systems. Topics include a collection of chapters on diverse topics, including the stability of nanoparticles in food, nanobiosensing for the detection of food contaminants, nanotechnology applications in agriculture, the role of nanotechnology in nutrient delivery, how nanotechnology is applied in dairy products, biofunctional magnetic nanoparticles in food safety, the development of nutraceuticals using nanotechnological tools, and more.
Author: Surajit Das
Publisher: Elsevier
ISBN: 0323983081
Category : Science
Languages : en
Pages : 774
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Book Description
**Selected for Doody's Core Titles® 2024 in Microbiology**Understanding Microbial Biofilms: Fundamentals to Applications focuses on the microbial biofilms of different environments. The book provides a comprehensive overview of the fundamental aspects of microbial biofilms, their existence in nature, their significance, and the different clinical and environmental problems associated with them. The book covers both the fundamentals and applications of microbial biofilms, with chapters on the introduction to the microbial community and its architecture, physiology, mechanisms and imaging of biofilms in nature and fungal, algal, and bacillus biofilm control. In addition, the book highlights the molecular and biochemical aspects of bacterial biofilms, providing a compilation of chapters on the bacterial community and communication from different environments. Finally, the book covers recent advancements in various aspects of microbial biofilms including the chapters on their biotechnological applications. All the chapters are written by experts who have been working on different aspects of microbial biofilms. - Illustrates fundamental aspects surrounding microbial biofilms, along with recent advancements - Provides an overview on the principal aspects of biofilms, i.e., formation, regulation, distribution, control, and application - Updates on the progress on biofilm regulation through 'omics' - Serves as a classical manual for all researchers, academicians, and students who would want complete insights on biofilms in a single resource - Covers all recent advancements and amendments on microbial biofilms
Author: Dharumadurai Dhanasekaran
Publisher: BoD – Books on Demand
ISBN: 9535124358
Category : Medical
Languages : en
Pages : 526
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Book Description
In the book Microbial Biofilms: Importance and applications, eminent scientists provide an up-to-date review of the present and future trends on biofilm-related research. This book is divided with four subdivisions as biofilm fundamentals, applications, health aspects, and their control. Moreover, this book also provides a comprehensive account on microbial interactions in biofilms, pyocyanin, and extracellular DNA in facilitating Pseudomonas aeruginosa biofilm formation, atomic force microscopic studies of biofilms, and biofilms in beverage industry. The book comprises a total of 21 chapters from valued contributions from world leading experts in Australia, Bulgaria, Canada, China, Serbia, Germany, Italy, Japan, the United Kingdom, the Kingdom of Saudi Arabia, Republic of Korea, Mexico, Poland, Portugal, and Turkey. This book may be used as a text or reference for everyone interested in biofilms and their applications. It is also highly recommended for environmental microbiologists, soil scientists, medical microbiologists, bioremediation experts, and microbiologists working in biocorrosion, biofouling, biodegradation, water microbiology, quorum sensing, and many other related areas. Scientists in academia, research laboratories, and industry will also find it of interest.
Author: Maria Schirone
Publisher: Frontiers Media SA
ISBN: 2889631869
Category :
Languages : en
Pages : 536
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Book Description
Author: Hans F. Stroo
Publisher: Springer Science & Business Media
ISBN: 1461441153
Category : Technology & Engineering
Languages : en
Pages : 421
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Book Description
This volume provides a review of the past 10 to 15 years of intensive research, development and demonstrations that have been on the forefront of developing bioaugmentation into a viable remedial technology. This volume provides both a primer on the basic microbial processes involved in bioaugmentation, as well as a thorough summary of the methodology for implementing the technology. This reference volume will serve as a valuable resource for environmental remediation professionals who seek to understand, evaluate, and implement bioaugmentation.
Author: Alexandru Mihai Grumezescu
Publisher: Academic Press
ISBN: 0128112638
Category : Technology & Engineering
Languages : en
Pages : 516
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Book Description
Microbial Contamination and Food Degradation, Volume 10 in the Handbook of Food Bioengineering series, provides an understanding of the most common microbial agents involved in food contamination and spoilage, and highlights the main detection techniques to help pinpoint the cause of contamination. Microorganisms may cause health-threatening conditions directly by being ingested together with contaminated food, or indirectly by producing harmful toxins and factors that can cause food borne illness. This resource discusses the potential sources of contamination, the latest advances in contamination research and strategies to prevent contamination using key methods of analysis and evaluation. - Presents modern alternatives for avoiding microbial spoilage and food degradation using preventative and intervention technologies - Provides key methods for addressing microbial contamination and preventing food borne illness through research and risk assessment analysis - Includes detailed information on bacterial contamination problems in different environmental environments and the methodologies to help solve those problems
