Download or read book Adsorption and Bacterial Adhesion Characteristics of Proteins Microbial Growth Media and Milk on Abiotic Surfaces Under Static and Laminar Flow Conditions written by Nikhil Hiremath and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Understanding the adhesion of bio-molecules and microorganisms to abiotic surfaces is an important consideration in food industry. The formation of these biofilms can have deleterious effects leading to contamination of food or materials coming into contact with them, causing spoilage &/or safety concerns. Among the biomolecules proteins are known to adhere to the surface very rapidly, followed by other biomolecules and microorganisms. In this study the two abiotic model surfaces, were conditioned with proteins [bovine serum albumin, sodium caseinate], microbial growth media [tryptic soya broth] and milk [whole milk, skim milk] under static and dynamic flow processing conditions. The extent of protein adsorbed to surfaces was quantified using the micro BCA protein assay. The food contact surfaces conditioned or without conditioning, were characterized using contact angle measurements to obtain various surfaces thermodynamic properties. The conditioning solutions were also characterized by dynamic light scattering and zeta potential measurements. The total free energy of interaction was calculated using the thermodynamic and the extended XDLVO models, and the adhesive potential of the biofilms was evaluated. The effect of preconditioning on the adhesion of bacteria to mica and polystyrene were studied. In addition the distribution of conditioning solutions and bacteria on the surface was evaluated using atomic force microscopy. The results under static conditions showed that the amount of proteins adsorbed on mica was much higher than polystyrene surfaces which may be because mica is more hydrophilic and polystyrene more hydrophobic. Sodium caseinate had the highest adsorption on both mica and polystyrene when compared to other conditioning solutions. The thermodynamic properties of conditioned surfaces showed that they favored electron-donating or Lewis base properties which are typical for proteins in hydrated states. DLS and Zeta potential results indicated that proteins were in aggregated states in solutions and had a negative surface charge. Preconditioning of mica and polystyrene surfaces altered their surface thermodynamic properties, especially, the electron donor and acceptor components of the surface free energy. This had a significant impact on the resulting hydrophobicity of the preconditioned surfaces as compared to the surfaces which were not conditioned. The computed free energy of interaction using the two models indicated the adhesion potential of conditioning solutions (in most cases) on both surfaces, but failed to accurately predict the extent of protein adsorption on surfaces. Under laminar flow conditions the amount of protein adsorbed onto mica and polystyrene surface was approximately two times higher than those obtained under static conditions. The DLS measurements of conditioning solutions showed that particle sizes of the conditioning solutions were more polydisperse than under static conditions. Dynamic flow condition also altered the surface thermodynamic properties of mica and polystyrene as observed with static conditions. The AFM analysis of both static and flow conditioned surfaces revealed that the conditioning film formed was not a continuous film but a heterogeneous deposit and attached in the form of aggregates. The adhesion of Listeria innocua to mica and polystyrene surfaces that were preconditioned with BSA, TSB and CAS under laminar flow showed lower adhesion values in comparison with those under static settings. However, with whole milk and skim milk, higher adhesion values of L. innocua were observed under flow conditions as compared with static conditions indicating bio-film source dependent variations. It was also observed that L. innocua cell adhesion on mica and polystyrene surfaces preconditioned with CAS WML and SML under static conditions were lower than Listeria monocytogenes under similar conditions, indicating strain dependent variations." --
Download or read book Microbial Adhesion to Surfaces written by R. C. W. Berkeley and published by . This book was released on 1980 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Physicochemical Behaviour of Thermophilic Bacteria on and Inside of the Milk Fouling Deposits written by Jin Ah Yoo and published by . This book was released on 2007 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Adhesion to Surfaces written by R. C. W. Berkeley and published by Ellis Horwood. This book was released on 1980 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biofilms in Wastewater Treatment written by Stefan Wuertz and published by IWA Publishing. This book was released on 2003-04-30 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: The central theme of the book is the flow of information from experimental approaches in biofilm research to simulation and modeling of complex wastewater systems. Probably the greatest challenge in wastewater research lies in using the methods and the results obtained in one scientific discipline to design intelligent experiments in other disciplines, and eventually to improve the knowledge base the practitioner needs to run wastewater treatment plants. The purpose of Biofilms in Wastewater Treatment is to provide engineers with the knowledge needed to apply the new insights gained by researchers. The authors provide an authoritative insight into the function of biofilms on a technical and on a lab-scale, cover some of the exciting new basic microbiological and wastewater engineering research involving molecular biology techniques and microscopy, and discuss recent attempts to predict the development of biofilms. This book is divided into 3 sections: Modeling and Simulation; Architecture, Population Structure and Function; and From Fundamentals to Practical Application, which all start with a scientific question. Individual chapters attempt to answer the question and present different angles of looking at problems. In addition there is an extensive glossary to familiarize the non-expert with unfamiliar terminology used by microbiologists and computational scientists. The colour plate section of this book can be downloaded by clicking here. (PDF Format 1 MB)
Download or read book Microbicides for the Protection of Materials written by W. Paulus and published by Springer Science & Business Media. This book was released on 1993-09-30 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is chiefly intended for those who are using microbicides for the protection of materials. Another purpose is to inform teachers and students working on biodeterioration and to show today's technical standard to those engaged in R&D activities in the microbicide field. When trying to classify, or to subclassify, material-protecting microbicides according to their mode of action, e.g. as membrane-active and electrophilic active ingredients, it turned out that a clear assignment was not always possible. For that reason the author has resorted to chemistry's principle of classifying according to groups of substances (e.g. alcohols, aldehydes, ketones, acids, esters, amides, etc.), thus providing the first necessary information about the micro bicides' properties. The description of the various groups of substances includes, whenever possible, an outline of the mode and mechanism of action of the active ingredients involved. The effective use of microbicides presupposes knowledge of their character istics. That is why the microbicides' chemico-physical properties, their toxicity, ecotoxicity, effectiveness, and effective spectrum are described in greater detail. As mentioned before, the characteristics of microbicides play an important role. They have to be suited to the intended application to avoid detrimental effects on the properties and the quality of the material to be protected; also production processes in which microbicides are used to avoid disturbances by microbial action must not be disturbed by the presence of those microbicides.
Download or read book Desk Encyclopedia of Microbiology written by Moselio Schaechter and published by Academic Press. This book was released on 2010-04-19 with total page 1277 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Desk Encyclopedia of Microbiology, Second Edition is a single-volume comprehensive guide to microbiology for the advanced reader. Derived from the six volume e-only Encyclopedia of Microbiology, Third Edition, it bridges the gap between introductory texts and specialized reviews. Covering topics ranging from the basic science of microbiology to the current "hot" topics in the field, it will be invaluable for obtaining background information on a broad range of microbiological topics, preparing lectures and preparing grant applications and reports. - The most comprehensive single-volume source providing an overview of microbiology to non-specialists - Bridges the gap between introductory texts and specialized reviews - Provides concise and general overviews of important topics within the field making it a helpful resource when preparing for lectures, writing reports, or drafting grant applications
Download or read book Fundamentals of Cell Immobilisation Biotechnology written by Viktor Nedovic and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cell Immobilisation Biotechnology Biotechnology is divided into two volumes. The first volume is dedicated to fundamental aspects of cell immobilisation while the second volume deals with the diverse applications of this technology. The first volume, Fundamentals of Cell Immobilisation Biotechnology, comprises 26 chapters arranged into four parts: Materials for cell immobilisation/encapsulation, Methods and technologies for cell immobilisation/encapsulation, Carrier characterisation and bioreactor design, and Physiology of immobilised cells: techniques and mathematical modelling.
Download or read book Fossil and Recent Biofilms written by Wolfgang Elisabeth Krumbein and published by Springer Science & Business Media. This book was released on 2003-11-30 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook on biofilms combines knowledge on sub-aquatic and sub-aerial biofilms and their products (stromatolites, oolites, ore, petroleum and gas deposits). It describes how formation and degradation of minerals and rocks is achieved through biofilm formation on and in sediments, soils and rocks. Methods of study, examples of Precambrian biofilms of an early Earth as well as the most recent examples of desert rock biofilms are treated in this integrative book on biofilms, microbial mats and stromatolites.
Download or read book Bacterial Adhesion written by Dirk Linke and published by Springer Science & Business Media. This book was released on 2011-05-10 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few years, bacterial adhesion has become a more and more important and active scientific area, but the field lacks communication and scientific exchange between medical and microbiology researchers who work with the relevant biological systems, and biochemists, structural biologists and physicists, who know and understand the physical methods best suited to investigate the phenomenon at the molecular level. The field consequently would benefit from a cross-disciplinary conference enabling such communication. This book tries to bridge the gap between the disciplines.
Download or read book Glossary of Biotechnology and Genetic Engineering written by Food and Agriculture Organization of the United Nations and published by Fao. This book was released on 1999 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date list of terms currently in use in biotechnology, genetic engineering and allied fields. The terms in the glossary have been selected from books, dictionaries, journals and abstracts. Terms are included that are important for FAO's intergovernmental activities, especially in the areas of plant and animal genetic resources, food quality and plant protection.
Download or read book Microorganisms in Sustainable Agriculture and Biotechnology written by T. Satyanarayana and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Biofilms Infection and Antimicrobial Therapy written by John L Pace and published by CRC Press. This book was released on 2019-08-30 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rather than existing in a planktonic or free-living form, evidence indicates that microbes show a preference for living in a sessile form within complex communities called biofilms. Biofilms appear to afford microbes a survival advantage by optimizing nutrition, offering protection against hostile elements, and providing a network for cell-to-cell signaling and genetic exchange. Biofilms, Infection, and Antimicrobial Therapy provides an in-depth exploration of biofilms, offering broad background information, as well a detailed look at the serious concerns to which biofilm-associated infections give rise. Prosthetic device infections, such as those involving artificial heart valves, intravascular catheters, or prosthetic joints, are prime examples of biofilm-associated infections. With the increasing use of such devices in the modern practice of medicine, the prevalence of these infections is expected to increase. Unfortunately, one of the most troubling characteristics of microbes found in biofilms is a profound resistance to antimicrobial agents. As biofilm-associated infections are particularly difficult to treat, they result in significant mortality, morbidity, and increased economic burden. Clearly, a better understanding of the pathogenesis of these infections and improved means for prevention and treatment are urgently needed! InBiofilms, Infection, and Antimicrobial Therapy, Drs Pace, Rupp, and Finch assemble the contributions of more than 50 of the world's leading authorities on microbial biofilms who present recent findings on antibacterial tolerance and bacterial persistence associated with biofilms and discuses the implications of those findings with regard to human health. They explore the molecular mechanisms of bacterial adherence, biofilm formation, regulation of biofilm maintenance, and cell-to-cell communication and present the latest information on various treatment protocols that should aid physicians in the treatment o
Download or read book Nanotechnology in Diagnosis Treatment and Prophylaxis of Infectious Diseases written by Mahendra Rai and published by Academic Press. This book was released on 2015-05-23 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology in Diagnosis, Treatment and Prophylaxis of Infectious Diseases delivers comprehensive coverage of the application of nanotechnology to pressing problems in infectious disease. This text equips readers with cutting-edge knowledge of promising developments and future prospects in nanotechnology, paying special attention to microbes that are now resistant to conventional antibiotics, a concerning problem in modern medicine. Readers will find a thorough discussion of this new approach to infectious disease treatment, including the reasons nanotechnology presents a promising avenue for the diagnosis, treatment, and prophylaxis of infectious diseases. - Provides a comprehensive overview of the use of nanotechnology in the treatment and diagnosis of infectious diseases - Covers all common types of infective agents, including bacteria, viruses, fungi, and protozoa, along with their vectors, ticks, mosquitoes, flies, etc. - Delivers commentary from an international researcher base, providing insights across differing economic statuses - Includes a foundation of basic nanotechnological concepts to aid in designing new strategies to combat several pathogenic diseases and cancer - Illustrates the high antimicrobial potential of nanoparticles, ultimately demonstrating how they are a promising alternative class that can be successfully used in fighting a myriad of infections
Download or read book Non Thermal Plasma Technology for Polymeric Materials written by Sabu Thomas and published by Elsevier. This book was released on 2018-10-08 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-Thermal Plasma Technology for Polymeric Materials: Applications in Composites, Nanostructured Materials and Biomedical Fields provides both an introduction and practical guide to plasma synthesis, modification and processing of polymers, their composites, nancomposites, blends, IPNs and gels. It examines the current state-of-the-art and new challenges in the field, including the use of plasma treatment to enhance adhesion, characterization techniques, and the environmental aspects of the process. Particular attention is paid to the effects on the final properties of composites and the characterization of fiber/polymer surface interactions. This book helps demystify the process of plasma polymerization, providing a thorough grounding in the fundamentals of plasma technology as they relate to polymers. It is ideal for materials scientists, polymer chemists, and engineers, acting as a guide to further research into new applications of this technology in the real world. - Enables materials scientists and engineers to deploy plasma technology for surface treatment, characterization and analysis of polymeric materials - Reviews the state-of-the-art in plasma technology for polymer synthesis and processing - Presents detailed coverage of the most advanced applications for plasma polymerization, particularly in medicine and biomedical engineering, areas such as implants, biosensors and tissue engineering
Download or read book Membrane Biological Reactors written by Faisal I. Hai and published by IWA Publishing. This book was released on 2013-11-01 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the MBR market has experienced unprecedented growth. The best practice in the field is constantly changing and unique quality requirements and management issues are regularly emerging. Membrane Biological Reactors: Theory, Modeling, Design, Management and Applications to Wastewater Reuse comprehensively covers the salient features and emerging issues associated with the MBR technology. The book provides thorough coverage starting from biological aspects and fundamentals of membranes, via modeling and design concepts, to practitioners’ perspective and good application examples. Membrane Biological Reactors focuses on all the relevant emerging issues raised by including the latest research from renowned experts in the field. It is a valuable reference to the academic and professional community and suitable for undergraduate and postgraduate teaching in Environmental Engineering, Chemical Engineering and Biotechnology. Editors: Faisal I. Hai, University of Wollongong, Australia Kazuo Yamamoto, University of Tokyo, Japan Chung-Hak Lee, Seoul National University, Korea.
Download or read book Coagulation and Flocculation in Water and Wastewater Treatment written by John Bratby and published by IWA Publishing. This book was released on 2006-10-15 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coagulation and Flocculation in Water and Wastewater Treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications. Thoroughly revised and updated since the 1st Edition it has been progressively modified and increased in scope to cater for the requirements of practitioners involved with water and wastewater treatment. A thorough gamut of treatment scenarios is attempted, including turbidity, color and organics removal, including the technical aspects of enhanced coagulation. The effects of temperature and ionic content are described as well as the removal of specific substances such as arsenic and phosphorus. Chemical phosphorus removal is dealt with in detail, Rapid mixing for efficient coagulant utilization, and flocculation are dealt with in specific chapters. Water treatment plant waste sludge disposal is dealt with in considerable detail, in an Appendix devoted to this subject. Invaluble for water scientists, engineers and students of this field, Coagulation and Flocculation in Water and Wastewater Treatment is a convenient reference handbook in the form of numerous examples and appended information.
