Download or read book Biomass Hydrolyzing Enzymes written by Reeta Rani Singhania and published by CRC Press. This book was released on 2024-05-06 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book provides advanced knowledge about lignocellulosic biomass production and its application in biomass hydrolysis. Lignocellulosic biomass is the most abundant, ubiquitous, and renewable raw material in the world. Though biomass can be deconstructed by other means, biological ways through enzymes are eco-friendly and sustainable. Biomass Hydrolyzing Enzymes: Basics, Advancements, and Applications discusses the different enzymes used for degrading biomass into its monomeric components. It covers important topics like biorefineries, hydrolysis of algal mass, kinetic modelling for hydrolysis, inhibitory effects, and more. Key Features Highlights recent developments in biorefineries, specific enzymes, inhibitor tolerance, and enhanced efficiencies Provides details on various kinds of biomass hydrolysis including algal biomass Includes the best practices for getting economic and efficient high conversions of biomass Covers strategies to be adopted for increasing the production of highly efficient enzymes Explores the advancements in lignocellulosic biomass hydrolysis The book is suitable for researchers and students in biotechnology, applied microbiology, and environmental sciences.
Download or read book Microbial Enzymes in Bioconversions of Biomass written by Vijai Kumar Gupta and published by Springer. This book was released on 2016-10-25 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume summarizes our current knowledge on different biomass-converting enzymes and their potential use in converting biomass into simple sugar to generate bioenergy and other value added co-/by products. It consists of 13 chapters and is divided into three parts: cellulases; hemicellulases; and lignocellulose oxidoreductases. Written by international experts, the contributions offer clear and concise descriptions of both standard and new technologies. It is an invaluable reference resource for undergraduates, post-graduates, researchers and practitioners in the field of microbial enzymes for biofuel and biorefinery applications.
Download or read book Lignocellulose Conversion written by Vincenza Faraco and published by Springer Science & Business Media. This book was released on 2013-06-12 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioethanol has been recognized as a potential alternative to petroleum-derived transportation fuels. Even if cellulosic biomass is less expensive than corn and sugarcane, the higher costs for its conversion make the near-term price of cellulosic ethanol higher than that of corn ethanol and even more than that of sugarcane ethanol. Conventional process for bioethanol production from lignocellulose includes a chemical/physical pre-treatment of lignocellulose for lignin removal, mostly based on auto hydrolysis and acid hydrolysis, followed by saccharification of the free accessible cellulose portions of the biomass. The highest yields of fermentable sugars from cellulose portion are achieved by means of enzymatic hydrolysis, currently carried out using a mix of cellulases from the fungus Trichoderma reesei. Reduction of (hemi)cellulases production costs is strongly required to increase competitiveness of second generation bioethanol production. The final step is the fermentation of sugars obtained from saccharification, typically performed by the yeast Saccharomyces cerevisiae. The current process is optimized for 6-carbon sugars fermentation, since most of yeasts cannot ferment 5-carbon sugars. Thus, research is aimed at exploring new engineered yeasts abilities to co-ferment 5- and 6-carbon sugars. Among the main routes to advance cellulosic ethanol, consolidate bio-processing, namely direct conversion of biomass into ethanol by a genetically modified microbes, holds tremendous potential to reduce ethanol production costs. Finally, the use of all the components of lignocellulose to produce a large spectra of biobased products is another challenge for further improving competitiveness of second generation bioethanol production, developing a biorefinery.
Download or read book Waste to Wealth written by Reeta Rani Singhania and published by Springer. This book was released on 2017-12-07 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on value addition to various waste streams, which include industrial waste, agricultural waste, and municipal solid and liquid waste. It addresses the utilization of waste to generate valuable products such as electricity, fuel, fertilizers, and chemicals, while placing special emphasis on environmental concerns and presenting a multidisciplinary approach for handling waste. Including chapters authored by prominent national and international experts, the book will be of interest to researchers, professionals and policymakers alike.
Download or read book Sustainable Degradation of Lignocellulosic Biomass written by Anuj Chandel and published by BoD – Books on Demand. This book was released on 2013-05-15 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides important aspects of sustainable degradation of lignocellulosic biomass which has a pivotal role for the economic production of several value-added products and biofuels with safe environment. Different pretreatment techniques and enzymatic hydrolysis process along with the characterization of cell wall components have been discussed broadly. The following features of this book attribute its distinctiveness: This book comprehensively covers the improvement in methodologies for the biomass pretreatment, hemicellulose and cellulose breakdown into fermentable sugars, the analytical methods for biomass characterization, and bioconversion of cellulosics into biofuels. In addition, mechanistic analysis of biomass pretreatment and enzymatic hydrolysis have been discussed in details, highlighting key factors influencing these processes at industrial scale.
Download or read book Enzymes in the Valorization of Waste written by Pradeep Verma and published by CRC Press. This book was released on 2022-12-15 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzymes play a vital role in the enzymatic hydrolysis of waste for its conversion to useful value-added products. Enzymatic Hydrolysis of Waste for Development of Value-added Products focusses on the role of key enzymes such as cellulase, hemicellulases, amylases, and auxiliary enzymes (LMPOs), used in the hydrolysis step of the biorefinery setup. Further, it discusses the role of enzymes in the generation of reducing sugars and value-added compounds, with major emphasis on recent advances in the field. The mechanism, importance, type, evolution, and role of enzymes in hydrolysis constitute the crux of this volume, which is illustrated with examples and pertinent case studies. Features: • Explores the role of hydrolyzing enzymes in the breakdown and transformation of biomass hydrolysis. • Discusses the potential of auxiliary enzymes (LPMOs) for enhancing hydrolysis potential. • Covers recent developments in the field of enzymatic-assisted hydrolysis of waste for conversion of waste to value-added products. • Deliberates all possible products that can be generated from enzymatic hydrolysis of waste and their potential utilization. • Elucidates the limitations and advantages of enzyme-based hydrolysis and possible strategies for moving from the laboratory to large scale industries. This book is aimed at graduate students, researchers and related industry professionals in biochemical engineering, environmental science, wastewater treatment, biotechnology, applied microbiology, biomass-based biorefinery, biochemistry, green chemistry, sustainable development, waste treatment, enzymology, microbial biotechnology, and waste valorization.
Download or read book Biomass Biofuels Biochemicals written by Sudhir P. Singh and published by Elsevier. This book was released on 2020-04-03 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Enzyme Catalysis and Technologies intends to provide the basic structural and functional descriptions, and classification of enzymes. The scientific information related to the recombinant enzyme modifications, discovery of novel enzymes and development of synthetic enzymes are also presented. The translational aspects of enzyme catalysis and bioprocess technologies are illustrated, by emphasizing the current requirements and future perspectives of industrial biotechnology. Several case studies are included on enzymes for biofuels application, micro algal biorefineries, high-value bioactive molecules production and enzymes for environmental processes, such as enzymatic bioprocessing for functional food development, biocatalytic technologies for the production of functional sweetener, etc. Provides a conceptual understanding of enzyme catalysis, enzyme engineering, discovery of novel enzymes, and technology perspectives Includes comprehensive information about the inventions and advancement in enzyme system development for biomass processing and functional food developmental aspects Gives an updated reference for education and understanding of enzyme technology
Download or read book Optimization of Enzymatic Hydrolysis of Lignocellulosic Biomass written by Vandana Rana and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzyme cost and hydrolytic efficiency are two crucial parameters when selecting enzymes for depolymerization of lignocellulosic biomass. Although a myriad of research efforts have been made by commercial companies and research institutions to find ways to produce enzymes with high hydrolytic efficiency at minimal production cost, there is still a lack of information on how to produce a low-cost enzyme mixture with high activity. A key challenge for use of these enzymes is the lack of optimization of amount of enzyme needed and for finding ways to produce cheaper enzymes on-site.
Download or read book Extremophilic Enzymatic Processing of Lignocellulosic Feedstocks to Bioenergy written by Rajesh K. Sani and published by Springer. This book was released on 2017-06-23 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces fundamentals of enzymatic processes, various renewable energy resources and their pretreatment processes. It presents in-depth review of extremophilic enzymes (e.g., Cellulases, Xylanases, Lytic Polysaccharide Monooxygenases, Amylases, Ligninases, Pectinases, Esterases, and Chitinases) which can be used in several biotechnological processes. In addition, the authors present expert knowledge on how to engineer enzymes for enhanced conversion of lignocellulosic feedstocks to biofuels.Extremozymes play important roles in many kinds of bioprocessing e.g., in conversion of non-food biomass into usable power. Existing enzymatic technologies, including hydrolysis of lignocellulose into sugars, have several limitations such as they have very slow enzymatic hydrolysis rates, yields low products, requires high dosages of enzymes, and are sensitive to microbial contamination problems. These limitations could be overcome using extremophilic enzymes.
Download or read book Optimal Control Theory written by Donald E. Kirk and published by Courier Corporation. This book was released on 2012-04-26 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upper-level undergraduate text introduces aspects of optimal control theory: dynamic programming, Pontryagin's minimum principle, and numerical techniques for trajectory optimization. Numerous figures, tables. Solution guide available upon request. 1970 edition.
Download or read book Biomass Biofuels Biochemicals written by Sunita Varjani and published by Elsevier. This book was released on 2022-03-09 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Circular Bioeconomy: Technologies for Waste Remediation covers information about the strategies and approaches facilitating the integration of technologies for wastewater and solid waste remediation. The book highlights the models developed to valorize wastes to produce biobased products. Various chapters presented in the book put a focus on sustainability approaches as a central theme in order to facilitate industries and policymakers to adopt circular economy goals. Since the principal idea of a circular bioeconomy is to transition from a linear economy, it involves advanced technological and designing breakthroughs to reduce waste with a closed looped system. Covers the integration of technologies and processes for waste remediation Narrates recent developments and perspectives on value added products from wastes Summarizes recent developments in lifecycle assessment and techno economic analysis using wastes for sustainable development Offers academicians, engineers, researchers and stakeholders help in adapting suitable technologies for solid waste and wastewater management
Download or read book Pretreatment of Lignocellulosic Biomass for Biofuel Production written by Pratima Bajpai and published by Springer. This book was released on 2016-03-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book describes the pretreatment of lignocellulosic biomass for biomass-to-biofuel conversion processes, which is an important step in increasing ethanol production for biofuels. It also highlights the main challenges and suggests possible ways to make these technologies feasible for the biofuel industry. The biological conversion of cellulosic biomass into bioethanol is based on the chemical and biological breakdown of biomass into aqueous sugars, for example using hydrolytic enzymes. The fermentable sugars can then be further processed into ethanol or other advanced biofuels. Pretreatment is required to break down the lignin structure and disrupt the crystalline structure of cellulose so that the acids or enzymes can easily access and hydrolyze the cellulose. Pre-treatment can be the most expensive process in converting biomass to fuel, but there is great potential for improving the efficiency and lowering costs through further research and development. This book is aimed at academics and industrial practitioners who are interested in the higher production of ethanol for biofuels.
Download or read book Engineering of Enzymes and Yeast for the Hydrolysis of Biomass written by Sneha Srikrishnan and published by . This book was released on 2012 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioethanol synthesis from lignocellulosic substrates begins with the de-lignification and separation of the complex plant cell wall to the constitutent fermentable elements, primarily, cellulose (~50%) and hemicellulose (~30%). This occurs in a series of treatment steps prior to fermentation, including a cost-intensive enzymatic hydrolysis stage involving a cocktail of glycosylhydrolases and other accessory enzymes that hydrolyze the polysaccharides to simple, fermentable sugars. The goal of this research was to improve the efficiency and cost-effectiveness of enzymatic hydrolysis in pretreatment. The first strategy was to increase the secreted level of two model thermostable fungal hydrolases: a Thermoascus aurantiacus endoglucanase (Eg1) and a Thermomyces lanuginosus endoxylanase (XynA) from the host Pichia pastoris by genetic and growth strategies. Our results suggested that while codon optimization of the gene sequences showed no improvement, increasing the gene copy number and modulating culture conditions were successful in improving the enzyme level. The second strategy was to improve the specific activity of these hydrolases by using a rational mutagenesis approach. We developed two variants of the Eg1 enzyme: Eg1F16S and Eg1Y95F, with 1.7- and 4.0-fold improvements, respectively, in catalytic efficiency relative to wild-type Eg1. The double mutant Eg1F16SY95F showed a 60% decrease in catalytic efficiency. In contrast to the single mutation Eg1 variants, the two XynA variants: XynAW18Y and XynAN71Y, retained only 10% and 60% of the wild-type activity, respectively. This indicated that both positions were critical to maintaining the functional integrity of the enzyme. Finally, we developed a set of five trimeric xylanosomes and three trimeric cellulosomes for the combined saccharification and fermentation of hemicellulose and cellulose in Saccharomyces cerevisiae. The xylanosomes were evaluated for enzyme-enzyme and enzyme-substrate synergy, and for the binding module choice and position within the scaffoldin. The xylanosome carrying the Thermotoga maritima xylan binding module at a position closest to the endoxylanase showed a 3.3-fold improvement in hydrolysis over free enzymes. Similarly, the influence of enzyme position on cellulose hydrolysis was evaluated using the trimeric cellulosomes. The strategies developed in this research will be applicable to other pretreatment enzymes of interest for the enhanced hydrolysis of complex plant substrates in yeast.
Download or read book Biocatalysis written by Gonzalo de Gonzalo and published by Royal Society of Chemistry. This book was released on 2017-11-02 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Implementing biocatalytic strategies in an industrial setting at a commercial scale is a challenging task, necessitating a balance between industrial need against economic viability. With invited contributions from small and large-scale chemical and pharmaceutical companies, this book bridges the gap between academia and industry. Contributors discuss current processes, types of biocatalysts and improvements, industrial motivation and key aspects to economically succeed. With its focus on industry related issues, this book will be a useful tool for future research by both practitioners and academics.
Download or read book Bioprocessing for Biofuel Production written by Neha Srivastava and published by Springer Nature. This book was released on 2020-10-28 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Converting biomass to biofuels involves hydrolyzing cellulose to sugars using cost-intensive commercial enzymes – an expensive step that makes large-scale production economically non-viable. As such, there is a need for low-cost bioprocessing. This book critically evaluates the available bioprocessing technologies for various biofuels, and presents the latest research in the field. It also highlights the recent developments, current challenges and viable alternative approaches to reduce the overall cost of producing biofuels.
Download or read book Valorisation of Agro industrial Residues Volume II Non Biological Approaches written by Zainul Akmar Zakaria and published by Springer Nature. This book was released on 2020-03-23 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world’s population is expected to reach the eight billion mark very soon. As a result, there is a need for increased industrial and agricultural production to ensure human wellbeing. This in turn generates huge amounts of waste. Current waste treatment solutions are effective, but usually require huge capital investment, are labour intensive and potentially lead to hazardous by-products. This book presents the latest non-biological approaches to address issues related to the abundance of waste, offering insights into best practices in various regions around the globe. It highlights techniques such as chemical extraction, pyrolysis and ultrasonics, and a number of chapters include individual case studies to further enhance readers’ understanding. This comprehensive reference resource is intended for graduate students, researchers and scientists, and is also a valuable addition to all agriculture and biotechnology libraries.
Download or read book Biotechnology for Fuels and Chemicals written by Jonathan R. Mielenz and published by Springer Science & Business Media. This book was released on 2009-12-24 with total page 969 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Biotechnology for Fuels and Chemicals: The Twenty-Eighth Symposium, leading researchers exchange cutting-edge technical information and update current trends in the development and application of biotechnology for sustainable production of fuels and chemicals. This symposium emphasizes advances in biotechnology to produce high-volume, low-price products from renewable resources, while improving the environment.
