Immobilization of Enzymes and Cells
Immobilization of Enzymes and Cells

Author: José M. Guisán

Publisher: Springer Science & Business Media

Published: 2008-02-05

Total Pages: 447

ISBN-13: 1597450537

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Enzymes and whole cells are able to catalyze the most complex chemical processes under the most benign experimental and environmental conditions. In this way, enzymes and cells could be excellent catalysts for a much more sustainable chemical industry. However, enzymes and cells also have some limitations for nonbiological applications: fine chemistry, food chemistry, analysis, therapeutics, and so on. Enzymes and cells may be unstable, difficult to handle under nonconventional conditions, poorly selective toward synthetic substrates, and so forth. From this point of view, the transformation—from the laboratory to industry—of chemical processes catalyzed by enzymes and cells may be one of the most complex and exciting goals in biotechnology. For many industrial applications, enzymes and cells have to be immobilized, via very simple and cost-effective protocols, in order to be re-used over very long periods of time. From this point of view, immobilization, simplicity, and stabilization have to be strongly related concepts. Over the last 30 years, a number of protocols for the immobilization of cells and enzymes have been reported in scientific literature. However, only very few protocols are simple and useful enough to greatly improve the functional properties of enzymes and cells, activity, stability, selectivity, and related properties.

Enzyme Immobilization
Enzyme Immobilization

Author: Rowan Austin

Publisher: Scientific e-Resources

Published: 2018-12-19

Total Pages: 348

ISBN-13: 1839473460

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An enzyme is a protein, or protein complex, that catalyses a chemical reaction. Like any catalyst, enzymes work by lowering the activation energy of a reaction, thus allowing the reaction to proceed to its steady state or completion much faster than it otherwise would; the enzyme remains unaltered by the completed reaction and can therefore continue catalysis. An immobilized enzyme is an enzyme attached to an inert, insoluble material-such as calcium alginate. This can provide increased resistance to changes in conditions such as pH or temperature. It also lets enzymes be held in place throughout the reaction, following which they are easily separated from the products and may be used again-a far more efficient process and so is widely used in industry for enzyme catalysed reactions. An alternative to enzyme immobilization is whole cell immobilization. Carrier matrices for enzyme immobilisation by adsorption and covalent binding must be chosen with care. The manufacture of high-valued products on a small scale may allow the use of relatively expensive supports and immobilisation techniques whereas these would not be economical in the large-scale production of low added-value materials. A substantial saving in costs occurs where the carrier may be regenerated after the useful lifetime of the immobilised enzyme. This book is simple protocols for the immobilization of enzymes and cells that could be useful for application at industrial scale, novel protocols for immobilization in the future, and new chemical reactors able to overcome the limitations of a number of immobilized derivatives.

Immobilized Enzyme Principles
Immobilized Enzyme Principles

Author: Lemuel B. Wingard

Publisher: Elsevier

Published: 2014-06-28

Total Pages: 377

ISBN-13: 1483215849

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Applied Biochemistry and Bioengineering, Volume 1: Immobilized Enzyme Principles focuses on the utilization of immobilization techniques for the study and application of enzyme catalysts in a variety of potential end-uses. This book emphasizes the preparation of enzyme-support systems, effects caused by the concurrent phenomena of enzyme-catalyzed reaction kinetics and mass transfer resistances, and how these reactions are incorporated into the design of enzyme-catalyzed reactor systems. The magnitude of the perturbation of the apparent kinetic parameters of an immobilized enzyme that could serve in principle as a measure of the effective concentrations of substrate, modifier, or inhibitor at the site of the enzymic reaction is also explained. This volume is recommended for biological scientists and engineers, as well as researchers interested in the biochemical common denominator that causes the interaction of engineering practice and biological sciences for technological development.

Polymeric Supports for Enzyme Immobilization
Polymeric Supports for Enzyme Immobilization

Author: Alka Dwevedi

Publisher: Elsevier

Published: 2021-06-25

Total Pages: 188

ISBN-13: 0128192062

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Enzyme immobilization has been approached for finding solutions for various critical problems associated with industries, medicine, environment, agriculture, etc. Especially since last decades, several innovative researches have come up to look for enhancing catalytic efficiency, reusability of immobilized enzyme and longer stability by introducing range of immobilizing supports, supports modifiers through introduction of several chemical agents (non-toxic) and adopting innovative enzyme immobilization methods. In the present book, polymeric supports have been focussed for enzyme immobilization, especially due to their versatility in immobilizing different enzymes for different large scale enzyme reactors to be used for several applications. Especially, polymers can be modified according to applications and enzyme properties which have made it supports of choice for all several enzyme based applications. Polymeric Supports for Enzyme Immobilization: Opportunities and Applications offers in-depth discussions of known polymeric enzyme support materials, reaction processes, and optimized methods to enhance enzyme immobilization. Case-based chapters examine methods of enzyme immobilization onto various polymeric supports, their surface chemistry and physical morphology followed by implementation of polymers based immobilized enzymes in various applications, viz. medicine, environment, industries, clean energy, disease diagnosis, drug delivery etc. This book has prime focus to allow several researchers across the world to provide updated technological details and incite to contribute more innovative work in coming years to find solutions to several critical problems. Offers an in-depth, case-driven discussion of known polymeric enzyme support materials, associated reaction processes, and methods to enhance enzyme immobilization Provides optimal strategies for various enzymes, processes, and applications, considering the enzyme itself, substrate, and available support properties Provides complete details on applications of polymeric based immobilized enzymes in various applications ranging from chemical; or pharmaceutical synthesis, food processing, bioremediation, industrial catalysis, etc.

Immobilized Enzymes for Food Processing
Immobilized Enzymes for Food Processing

Author: Pitcher

Publisher: CRC Press

Published: 2019-08-08

Total Pages: 384

ISBN-13: 1351090305

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Much has been written about immobilized enzymes during this period of time. So much, in fact, that it can become difficult even for those involved in developing new enzymatic food processing operations to bridge the gap between the field of immobilized enzymes and their specific requirements. It is the purpose of this book to assist those engaged in this difficult task. It is also a goal to bring to the researcher in enzyme immobilization an appreciation for the requirements of the food processing industry.