Centrifugal Separations in Biotechnology


Book Description

Centrifugal Separations in Biotechnology, Second Edition, is the only book on the market devoted to centrifugal separation in biotechnology. Key topics covered include a full introduction to centrifugation, sedimentation and separation; detailed coverage of centrifuge types, including batch and semi-batch centrifuges, disk-stack and tubular decanter centrifuges; methods for increasing solids concentration; laboratory and pilot testing of centrifuges; selection and sizing centrifuges; scale-up of equipment, performance prediction and analysis of test results using numerical simulation. Centrifugal Separations in Biotechnology, Second Edition, provides guidance on troubleshooting and optimizing centrifuges, and then goes on to explore the commercial applications of centrifuges in biotechnology. It gives detailed process information and data to assist in the development of particular processes from existing systems. It is of value to professionals in the chemical, bioprocess, and biotech sectors, and all those concerned with bioseparation, bioprocessing, unit-operations and process engineering. Provides a comprehensive guide to centrifuges, their optimal development, and their operation in the biotechnology industry Updated throughout based on developments in industrial applications and advances in our understanding of centrifugal separations in biotechnology Discusses applications for the separation of proteins, DNA, mitochondria, ribosomes, lysosomes and other cellular elements Includes new sections on use of optimal polymer dosage in waste treatment, new centrifuge designs for applications in algae processing, biopharma, and more







Highly Selective Separations in Biotechnology


Book Description

Success in meeting the challenge to produce the commercial products anticipated by the exploitation of biological processes depends upon provid ing effective separation protocols. Effectiveness can be measured in terms of selectivity, purity, resolution and validatory success. The major processing problems are associated with either the selective recovery of molecules which are present in low concentrations from complex mixtures or the selective removal of contaminants from the desired molecule. Central to the evolution of processes satisfying this demand are the regulatory requirements being imposed by governments on the purity of a product, especially in the health care market. Synthetic organic chemists are increasingly finding it advantageous to conduct one or more steps using either enzymic biotransformations where molecules with a single and consistent stereochemistry or chirality are required. The underlying princi ples behind the methods, techniques and processes currently being used and developed commercially rely upon the biospecific nature and properties of the desired molecule. When these factors are married to the more traditional techniques of precipitation, chromatography, liquid-liquid extraction and membrane processes, powerful tools emerge, allowing highly selective separations to be designed. The logical extension of these combinations is to apply genetic engineering techniques to influence the separations at a more fundamental and structural level by modifying the target protein at source, during its synthesis, to facilitate its separation in a given, selective manner, leading to the distinct possibility of producing 'designer' separation programmes.




Separation Processes in the Food and Biotechnology Industries


Book Description

This book reviews methods and techniques for separating food components and products of the biotechnology industry. The introduction focuses on food composition and some of the conventional separation techniques. Subsequent chapters deal with each specific type or area of application individually and include information on the basic principles, industrial equipment available, commercial applications and an overview of research and development.




Separations Using Aqueous Phase Systems


Book Description

The use of aqueous two-phase systems for the partitioning of macromolecules, organelles and cells was originally developed by Per-Ake Albertsson in Sweden in the mid-fifties [1-3]. These systems were initially applied to separations of plant organelles and viruses but their use has now extended into most areas of cell biology and biochemistry [4,5]. Since 1979 biennial International Conferences on Partitioning in Aqueous Two-Phase Systems have been held in Los Angeles (1979), Sheffield (1981), Vancouver (1983) and Lund (1985). The 5th conference was held in Oxford from 23-28 August 1987 and was entitled "Advances in Separations Using Aqueous Phase Systems in Cell Biology and Biotechnology". It is the formal presentations from this meeting which comprise this volume. In contrast to earlier books on phase partitioning [4,5] this volume contains, for the first time, worldwide contributions from over sixty partitioners from a variety of scientific disciplines, thereby providing a detailed overview of the widespread application and potential of bioseparations using phase partitioning. Disciplines include Biophysics, Biochemistry, Cell Biology, Microbiology, Biotechnology and Process Engineering, in both academic and commercial establishments. These biennial conferences allow advances in these diverse partitioning fields to be reviewed and compared; they also provide an opportunity for those considering using phase partitioning to obtain information, advice and contacts. Attendance has grown steadily over the years and 140 scientists came to Oxford. The conference consisted of ten symposia on areas of application of partitioning which have been organised as specific chapters in this volume.




Highly Selective Separations in Biotechnology


Book Description

Success in meeting the challenge to produce the commercial products anticipated by the exploitation of biological processes depends upon provid ing effective separation protocols. Effectiveness can be measured in terms of selectivity, purity, resolution and validatory success. The major processing problems are associated with either the selective recovery of molecules which are present in low concentrations from complex mixtures or the selective removal of contaminants from the desired molecule. Central to the evolution of processes satisfying this demand are the regulatory requirements being imposed by governments on the purity of a product, especially in the health care market. Synthetic organic chemists are increasingly finding it advantageous to conduct one or more steps using either enzymic biotransformations where molecules with a single and consistent stereochemistry or chirality are required. The underlying princi ples behind the methods, techniques and processes currently being used and developed commercially rely upon the biospecific nature and properties of the desired molecule. When these factors are married to the more traditional techniques of precipitation, chromatography, liquid-liquid extraction and membrane processes, powerful tools emerge, allowing highly selective separations to be designed. The logical extension of these combinations is to apply genetic engineering techniques to influence the separations at a more fundamental and structural level by modifying the target protein at source, during its synthesis, to facilitate its separation in a given, selective manner, leading to the distinct possibility of producing 'designer' separation programmes.




Separations Technology


Book Description

Authored by a team of respected scientists and technologists, this book covers many pharmaceutical and biotechnology separations methods currently in use. Practical applications and descriptions are offered for air elutriation, microporous filtration, ultrafiltration, phase partitioning, crystallization, and chromatographic technologies such as adsorption, affinity, chelate, ion-exchange, size-exclusion, template, hydrophobic interaction, biotransformations, and chiral separations. Containing hundreds of references and a complete index, this book is designed for research and development scientists, process optimization engineers, and quality control laboratory scientists as well as quality assurance professionals and others needing to understand current separation techniques.




Engineering Processes for Bioseparations


Book Description

The use of biotechnology in chemical synthesis offers up numerous advantages to the engineer in the process industries, but it also presents a number of fundamental challenges and difficulties which impinge directly on separation process requirements. The use of biochemical separations has grown significantly during the past decade, and is especially used in process industries such as healthcare and food processing. However it is becoming increasingly more important in areas such as recycling and waste-water treatment and as industry shifts towards cleaner processes biochemical separations will continue to grow. The two main objectives of this book are to focus on the application of existing separation process techniques to the recovery and purification of biologically derived products and to examine the state of knowledge of new techniques which have future potential. Within these objectives the complexities and breadth of problems associated with biological separations are discussed, specific engineering techniques are featured and their adaptation to biochemical separations are highlighted.




Three Phase Partitioning


Book Description

Three Phase Partitioning: Applications in Separation and Purification of Biological Molecules and Natural Products presents applications in diverse areas of both chemical technology and biotechnology. This book serves as a single resource for learning about both the economical, facile and scalable processes, along with their potential for applications in the separation and purification of materials and compounds across the entire spectra of chemical and biological nature. The book begins by explaining the origins and fundamentals of TPP and continues with chapters on related applications, ranging from the purification of parasite recombinant proteases to oil extraction from oilseeds and oleaginous microbes, and more. Written by researchers who have been pioneers in developing and utilizing three phase partitioning Focuses on applications, with chapters detailing relevance to a wide variety of areas and numerous practical examples Designed to give laboratory workers the information needed to undertake the challenge of designing successful three-phase partitioning protocols