Polyphenol Oxidases
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Polyphenol Oxidases
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Author : Pradeep Verma
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2024-04-22
Polyphenol Oxidases written by Pradeep Verma and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-04-22 with Science categories.
Currently, there are no books that cover all the dimensions of Polyphenol Oxidases (PPOs), which is why publication of the book is needed. The book focuses on its types, structure, distinctive aspects, applications, genetic engineering, and commercial status. PPOs have been used for wastewater remediation and in environmental biosensors. The role of PPOs in global sustainability along with challenges and future prospects is also discussed.
Polyphenol Oxidases Ppos In Plants
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Author : Aravind Jukanti
language : en
Publisher: Springer
Release Date : 2017-08-18
Polyphenol Oxidases Ppos In Plants written by Aravind Jukanti and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-18 with Science categories.
This book is first of its kind exclusively dedicated to plant polyphenol oxidases (PPOs), highlighting their importance in the food processing industry. By reviewing the scientific developments of the past several decades, it offers a comprehensive overview of various aspects of plant PPOs, including chemistry, structure, functions, regulation, genetics/genomics and molecular aspects. PPOs are copper-containing proteins found in several plant species that catalyze the hydroxylation of o-monophenols to o-diphenols and oxidation of the o-dihydroxyphenols to o-quinones. Further, the quonines undergo self-polymerization or react with amines/thiol groups to produce brown/dark coloration of products. All the PPOs contain two Cu-binding sites (CuA and CuB) as their central domain, these interact with phenolic substrates and molecular oxygen. Several of the plant PPOs contain an N-terminal transit peptide (~80-100 amino acids ) necessary for plastid import. The PPOs occur in latent form that are activated by various treatments including acid and base shock, exposure to detergents or proteolytic degradation. The pH optimum of PPOs varies widely depending upon different plant species but is usually ~4.0 – 8.0. Similarly, the optimum temperature also varies as per the source and substrate involved ranging from 30 to 45 °C. Multiple PPO isoforms have been reported in several plant species, and the chromosomal location of PPOs has also been studied in some species. The physiological role (s) of PPOs is not entirely understood, but they could be involved in defense-related functions in plants. From an applied perspective, PPOs are implicated in enzymatic browning/darkening of cereal products, vegetables and fruits. Interestingly, browning is preferred in some instances like the processing of black tea, cocoa, and coffee as it enhances their quality by forming flavorful products. There have b een initiatives to specifically breed and develop cultivars with reasonably low PPO levels in the mature grain or fruit. Further, several types of inhibitors that reduce the PPO activity have also been identified. Despite their commercial/economic importance and the availability of literature on different aspects of PPOs in different plant species, this is the first book to provide basic information regarding PPOs. It is a valuable resource for researchers involved in quality-related research specifically in crops, vegetables and fruits. Further, as PPOs are also implicated in defense- or stress-related functions, the book is also useful to breeders, pathologists, molecular biologists, physiologists and entomologists.
Laccase And Polyphenol Oxidase
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Author : Ivanhoe K.H. Leung
language : en
Publisher: Elsevier
Release Date : 2024-10-30
Laccase And Polyphenol Oxidase written by Ivanhoe K.H. Leung and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-10-30 with Science categories.
Laccase and Polyphenol Oxidase: Biochemistry and Biotechnological Applications, a new volume in the Foundations and Frontiers in Enzymology series, provides a thorough discussion of the laccase and polyphenol oxidase enzyme families, which play a key role in the oxidation of phenolic substrates and an important biological function in many organisms. In recent years, significant advances have been made in understanding these enzymes, but few practical resources exist on their fundamental biology, research methods, and applications. In this book, leading world experts discuss the biochemistry of laccase and polyphenol oxidases, research methods, and uses across industries, offering a practical overview of these important enzyme classes, and empowering researchers to develop their own studies and hone applications. The book deftly connects topics across these intricate enzyme systems, with early chapters on physicochemical properties of PPO and laccase, followed by separate sections on these related enzyme classes' function in biological and industrial systems, production, purification, active assays, and application areas from food and wine to healthcare, bioremediation, and green and computational chemistry. Step-by-step instructions and explanation offer clear guidance in replicating key research and application methodologies discussed. - Examines the fundamental biology of laccase and polyphenol oxidases, research methods, and their uses across industries - Features chapter contributions from leading international experts in the field - Offers step-by-step instructions in key research and application methodologies
Food Enzymes
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Author : Dominic W.S. Wong
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Food Enzymes written by Dominic W.S. Wong and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Technology & Engineering categories.
Food Enzymes: Structure and Mechanism is the first volume to bring together current information on the structures and mechanisms of important food enzymes. It provides an in-depth discussion of the dynamic aspects of enzyme structures and their relationship to the chemistry of catalysis. The book emphasizes aspects of the chemistry of enzyme structure and mechanism seldom covered in the food science literature. It includes a thorough discussion of the genetic modification of enzyme structures and functions with reference to specific food enzymes. More than 100 illustrations enhance the clarity of important concepts. Comprehensive references reflect the current state of knowledge on enzyme actions.
Polyphenols 96
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Author : J. Vercauteren
language : en
Publisher: Editions Quae
Release Date : 1998
Polyphenols 96 written by J. Vercauteren and has been published by Editions Quae this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Plant polyphenols categories.
Handbook Of Food Enzymology
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Author : John R. Whitaker
language : en
Publisher: CRC Press
Release Date : 2002-12-05
Handbook Of Food Enzymology written by John R. Whitaker and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-12-05 with Technology & Engineering categories.
Discussing methods of enzyme purification, characterization, isolation, and identification, this book details the chemistry, behavior, and physicochemical properties of enzymes to control, enhance, or inhibit enzymatic activity for improved taste, texture, shelf-life, nutritional value, and process tolerance of foods and food products. The book cov
International Conference On Present Day Biology A Bastion For Social And Sustainable Development
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Author : St Xavier College, Ahemadabad
language : en
Publisher: Archers & Elevators Publishing House
Release Date :
International Conference On Present Day Biology A Bastion For Social And Sustainable Development written by St Xavier College, Ahemadabad and has been published by Archers & Elevators Publishing House this book supported file pdf, txt, epub, kindle and other format this book has been release on with Antiques & Collectibles categories.
Biological Implications Of Plant Polyphenol Oxidases To Host Plant Resistance Against Noctuid Larvae
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Author : Gary W. Felton
language : en
Publisher:
Release Date : 1988
Biological Implications Of Plant Polyphenol Oxidases To Host Plant Resistance Against Noctuid Larvae written by Gary W. Felton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Protein Structure Function Relationships In Foods
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Author : Rickey Y. Yada
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Protein Structure Function Relationships In Foods written by Rickey Y. Yada and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Food proteins constitute a diverse and complex collection of biological macro molecules. Although contributing to the nutritional quality of the foods we con sume, proteins also act as integral components by virtue of their diverse functional properties. The expression of these functional properties during the preparation, processing and storage of foods is largely dictated by changes to the structure or structure-related properties of the proteins involved. Therefore, germane to the optimal use of existing and future food protein sources is a thorough understanding of the nature of the relationships between structure and function. It is the goal of this book to aid in better defining these relationships. Two distinct sections are apparent: firstly, those chapters which address struc ture-function relationships using a variety of food systems as examples to demonstrate the intricacies of this relationship, and secondly, those chapters which discuss techniques used to either examine structural parameters or aid in establishing quantitative relationships between protein structure and function. The editors would like to thank all contributors for their assistance, co-operation and, above all, their patience in putting this volume together, and the following companies/organizations for their financial support without which it would not have been the success it was: Ault Foods Limited, Best Foods Canada Limited, Natural Sciences and Engineering Research Council of Canada, Ontario Ministry of Agriculture and Food, Quest International Canada Inc., and University of Guelph. R.Y.Y. R.LJ.
The Chemistry Of Food
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Author : Jan Velisek
language : en
Publisher: John Wiley & Sons
Release Date : 2020-07-21
The Chemistry Of Food written by Jan Velisek and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-21 with Technology & Engineering categories.
Wiley's landmark food chemistry textbook that provides an all-in-one reference book, revised and updated The revised second edition of The Chemistry of Food provides a comprehensive overview of important compounds constituting of food and raw materials for food production. The authors highlight food’s structural features, chemical reactions, organoleptic properties, nutritional, and toxicological importance. The updated second edition reflects the thousands of new scientific papers concerning food chemistry and related disciplines that have been published since 2012. Recent discoveries deal with existing as well as new food constituents, their origin, reactivity, degradation, reactions with other compounds, organoleptic, biological, and other important properties. The second edition extends and supplements the current knowledge and presents new facts about chemistry, legislation, nutrition, and food safety. The main chapters of the book explore the chemical structure of substances and subchapters examine the properties or uses. This important resource: • Offers in a single volume an updated text dealing with food chemistry • Contains complete and fully up-to-date information on food chemistry, from structural features to applications • Features several visual aids including reaction schemes, diagrams and tables, and nearly 2,000 chemical structures • Written by internationally recognized authors on food chemistry Written for upper-level students, lecturers, researchers and the food industry, the revised second edition of The Chemistry of Food is a quick reference for almost anything food-related as pertains to its chemical properties and applications.