Download or read book Laccase and Polyphenol Oxidase written by Ivanhoe K.H. Leung and published by Academic Press. This book was released on 2024-12-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Polyphenol Oxidases written by Pradeep Verma and published by Walter de Gruyter GmbH & Co KG. This book was released on 2024-04-22 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Properties of the Extracellular Laccase polyphenol Oxidase of Armillaria Mellea written by Ata-Ur Rehman and published by . This book was released on 1991 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enzymatic Browning and Its Prevention written by Chang Y. Lee and published by . This book was released on 1995 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the chemistry, structure, and function of polyphenol oxidase. Covers the molecular biology of polyphenol oxidase. Describes the chemistry of enzymatic browning. Provides practical methods for preventing enzymatic browning in fruit and vegetable products. Valuable reading for chemists, molecular biologists, food scientists, and food technologists.
Download or read book Microbial Extremozymes written by Mohammed Kuddus and published by Academic Press. This book was released on 2021-08-20 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Extremozymes: Novel Sources and Industrial Applications is a unique resource of practical research information on the latest novel sources and technologies regarding extremozymes in bioremediation, waste management, valorization of industrial by-products, biotransformation of natural polymers, nutrition, food safety and diagnosis of disease. The book's broad knowledge and varying applications are useful to the food industry, dairy industry, fruit and vegetable processing, and baking and beverages industries, as well as the pharmaceutical and biomedical industries. This is a concise, all-encompassing resource for a range of scientists needing knowledge of extremozymes to enhance and research. Furthermore, it provides an updated knowledge of microbial enzymes isolated from extreme environments (temperatures, etc.) and their biotechnological applications. It will be useful to researchers, scientists and students in enzyme research. In addition, users from the dairy and baking industries will benefit from the presented content. - Explores recent scientific research on extremophiles and extremozymes technologies that help innovate novel ideas - Provides innovative technologies for enzyme production from extremophilic microbes - Includes cutting-edge research for applications in various industries where extreme temperature conditions exist - Presents novel microorganisms and their enzymes from extreme environments (Thermophilic, Psychrophilic, Acidophilic, Alkaliphilic, Anaerobic, Halophilic, Barophilic, Metallotolerant, Radioresistant, etc.)
Download or read book Current Developments in Biotechnology and Bioengineering written by Ashok Pandey and published by Elsevier. This book was released on 2017-09-12 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Developments in Biotechnology and Bioengineering: Current Advances in Solid-State Fermentation provides knowledge and information on solid-state fermentation involving the basics of microbiology, biochemistry, molecular biology, genetics and principles of genetic engineering, metabolic engineering and biochemical engineering. This volume of the series is on Solid-State fermentation (SSF), which would cover the basic and applied aspects of SSF processes, including engineering aspects such as design of bioreactors in SSF. The book offers a pool of knowledge on biochemical and microbiological aspects as well as chemical and biological engineering aspects of SSF to provide an integrated knowledge and version to the readers. - Provides state-of-the-art information on basic and fundamental principles of solid-state fermentation - Includes key features for the education and understanding of biotechnology education and R&D, in particular on SSF - Lists fermentation methods for the production of a wide variety of enzymes and metabolites - Provides examples of the various industrial applications of enzymes in solid state fermentation
Download or read book Polyphenol Oxidases written by Pradeep Verma and published by Walter de Gruyter GmbH & Co KG. This book was released on 2024-04-22 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Polyphenol Oxidases PPOs in Plants written by Aravind Jukanti and published by Springer. This book was released on 2017-08-18 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Marine Enzymes Biotechnology Production and Industrial Applications Part III Application of Marine Enzymes written by and published by Academic Press. This book was released on 2017-02-17 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approx.216 pagesApprox.216 pages
Download or read book Microbial Bioprospecting for Sustainable Development written by Joginder Singh and published by Springer. This book was released on 2018-09-18 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of the use of microorganisms and microbial metabolites as a future sustainable basis of agricultural, environmental and industrial developments. It provides a holistic approach to the latest advances in the utilization of various microorganism bioprospecting including their wide range of applications, traditional uses, modern practices, and designing strategies to harness their potential. In addition, it highlights advanced microbial bioremediation approaches, including genetic manipulation, metagenomics analysis and bacteriophage-based sensors for the detection of food-borne pathogens. Lastly, it elaborates on the latest advances regarding the role of microbes in the sustainable development of various industrial products.
Download or read book Enzyme Chemistry of Phenolic Compounds written by J. B. Pridham and published by Elsevier. This book was released on 2014-05-16 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzyme Chemistry of Phenolic Compounds documents the proceedings of the Plant Phenolics Group Symposium held at Liverpool on April 11-12 1962. This book focuses on the interaction of enzymes and phenolic compounds, oxidation-reduction systems in plants and microorganisms, and phenolase complex. Other topics discussed include purification of phenol oxidases; enzyme-substrate specificity in potato polyphenol oxidase; tocopherols; and role of ubiquinone and plastoquinone in plant metabolism. Hydrolytic enzymes; enzyme inhibition by phenolic compounds; tannin inhibition of plant mitochondria; and aromatic acid-reducing systems in fungi are also deliberated in this selection. This publication is beneficial to students and biochemists researching on enzyme and phenolic compounds.
Download or read book Three Phase Partitioning written by Munishwar Nath Gupta and published by Elsevier. This book was released on 2021-08-11 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Bio Farms for Nutraceuticals written by Maria Teresa Giardi and published by Springer Science & Business Media. This book was released on 2011-06-26 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Bio-Farms for Nutraceuticals" can be said to have been born of the NUTRA-SNACKS project within the Sixth Framework Programme Priority on Food Quality and Safety. One objective of NUTRA -SNACK S was to improve the nutritional and eating properties of ready-to-eat products and semi-prepared foodstuffs through better monitoring of the quality and safety of raw materials and the development of innovative processes along the production chain. Another main objective of the project was the production of ready-to-eat snacks with high nutraceutic activity. Seven research institutes and three companies in six European countries were involved in this effort. The co-operation resulted in the production of food having a high content of natural metabolites with the following beneficial health effects: anticancer, antilipidemic, anticholesterol, antimicrobial, antibacterial, antifungal, antiviral, antihypertensive, anti-inflamatory and antioxidant activities.
Download or read book Nanozymes Next Wave of Artificial Enzymes written by Xiaoyu Wang and published by Springer. This book was released on 2016-07-27 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fundamental concepts, the latest developments and the outlook of the field of nanozymes (i.e., the catalytic nanomaterials with enzymatic characteristics). As one of today’s most exciting fields, nanozyme research lies at the interface of chemistry, biology, materials science and nanotechnology. Each of the book’s six chapters explores advances in nanozymes. Following an introduction to the rise of nanozymes research in the course of research on natural enzymes and artificial enzymes in Chapter 1, Chapters 2 through 5 discuss different nanomaterials used to mimic various natural enzymes, from carbon-based and metal-based nanomaterials to metal oxide-based nanomaterials and other nanomaterials. In each of these chapters, the nanomaterials’ enzyme mimetic activities, catalytic mechanisms and key applications are covered. In closing, Chapter 6 addresses the current challenges and outlines further directions for nanozymes. Presenting extensive information on nanozymes and supplemented with a wealth of color illustrations and tables, the book offers an ideal guide for readers from disparate areas, including analytical chemistry, materials science, nanoscience and nanotechnology, biomedical and clinical engineering, environmental science and engineering, green chemistry, and novel catalysis.
Download or read book Comparison of Free and Immobilized Polyphenol Oxidase Enzymes for the Biocatalytic Conversion of Catechins Into Theaflavins written by Magdalien Bannister and published by . This book was released on 2013 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reusability of active enzyme is important in industrial bio-catalysis applications. This is not readily accomplished with free enzymes. The project investigated a new enzyme immobilization matrix, ReSynTM, and compared it to three widely used matrixes, Eugergit C, Eupergit C 250 L and DEAE Sephadex A-25. Initial comparative immobilization performed with BSA, determined ReSynTM (covalent immobilization) to have an approximate 8 fold higher protein loading efficiency than the other support. The enzymes selected for immobilization were polyphenol oxidase (PPO) (first reported purification of PPO from Forelle pear) and laccase (Novozyme (Pty) Ltd) based upon their application potential. From the comparative assessment of immobilization based on BSA and the activity (units/mg support) attained by ReSynTM immobilized laccase, it was deduced that ReSynTM demonstrated performance superiority over the other supports. The project aim was the application of immobilized PPO in the ice tea industry to increase the value of black iced tea based upon an increased theaflavin content. The unusually rich sub-group of polyphenols known as flavanols or catechins, may constitute up to 30% of the dry tea leaf weight. The oxidation of green leaf polyphenols is precluded in the preparation of green tea in contrast to the promotion of oxidation in the production of black tea. PPO catalyzes the controlled aerobic oxidation of catechins producing various quinones which undergo condensation reactions resulting in dimeric compounds known as theaflavins, whereas a peroxidase (PO) enzyme produces polymeric substances, known as thearubigins, during the fermentation stage of black tea production (Graham 1992). The production of theaflavins from flavan-3-ols (catechins), is catalysed by PPO (Bonnely et al. 2003). The black tea theaflavins are a mixture of theaflavin, theaflavin-3-gallate, theaflavin-3'-gallate and theaflavin-3,3'-digallate. The project focussed on the bioconversion of green tea leaf catechins into theaflavins, as the original method employed to acquire theaflavins, the extraction of theaflavins from black tea (only 0.4-1.85% of the dry weight of black tea), doesn’t provide a cost-effective manner of recovering theaflavins, and amounts to an industrially unfeasible approach (Sharma et al. 2009, Wang & Li 2006). Preliminary exploratory investigation into the theaflavin synthesis capacity of Forelle pear and Yacon (Smallanthus sonchifolius) leaf homogenates, respectively determined a 136% and 98% theaflavin content to that present in Lipton® Yellow label black tea, after an hour of fermentation utilizing Lipton® Green tea as starting material. The homogenates of Forelle
Download or read book Metal Containing Enzymes written by and published by Academic Press. This book was released on 2014-11-24 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published continuously since 1944, the Advances in Protein Chemistry and Structural Biology series is the essential resource for protein chemists. Each volume brings forth new information about protocols and analysis of proteins. Each thematically organized volume is guest edited by leading experts in a broad range of protein-related topics. - Describes advances in metal-containing enzymes - Chapters are written by authorities in their field - Targeted to a wide audience of researchers, specialists, and students - The information provided in the volume is well supported by a number of high quality illustrations, figures, and tables
Download or read book Fresh Cut Fruits and Vegetables written by Olusola Lamikanra and published by CRC Press. This book was released on 2002-02-14 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference for the emerging fresh-cut fruits and vegetable industry, Fresh-cut Fruits and Vegetables: Science, Technology and Market focuses on the unique biochemical, physiological, microbiological, and quality changes in fresh-cut processing and storage. It highlights the distinct equipment design, packaging requirements, production economics, and marketing considerations for fresh-cut products. Based on the extensive research in this area during the last 10 years, this reference is the first to cover the complete spectrum of science, technology, and marketing issues related to this field.
