Download or read book Mechanism and Kinetics of Enzymatic Hydrolysis of Native and Solvent Treated Cellulose written by Terry Yu-Chia Chou and published by . This book was released on 1980 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cellulose Hydrolysis written by Liang-tseng Fan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent economic trends, especially the worldwide decline in oil prices, and an altered political climate in the United States have combined to bring about major reductions in research on renewable energy resources. Yet there is no escaping the "facts of life" with regard to these resources. The days of inexpensive fossil energy are clearly numbered, the credibility of nuclear energy has fallen to a new low, and fusion energy stands decades or more from practical realization. Sooner than we may wish ,we will have to turn to renewable raw materials - plant "biomass" and, especially, wood - as significant suppliers of energy for both industry and everyday needs. It is therefore especially important to have a single, comprehensive and current source of information on a key step in any process for the technological exploitation of woody materials, cellulose hydrolysis. Further more, it is essential that any such treatment be unbiased with respect to the two methods - chemical and biochemical - for the breakdown of cellulose to sugars. Researchers on cellulose hydrolysis have frequently been chided by persons from industry, especially those individuals concerned with determining the economic feasibility of various technological alternatives. They tell us that schemes for the utilization of wood and other such resources fly in the face of economic realities.
Download or read book Enzymatic Hydrolysis of Cellulose written by Dale Francis Wiley and published by . This book was released on 1985 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enzymatic Hydrolysis of Cellulose written by Teh-An Hsu and published by . This book was released on 1979 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enzymatic Hydrolysis of Cellulose written by Michael Ralph Ladisch and published by . This book was released on 1977 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1980 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Enzymic Hydrolysis of Cellulose and Related Materials written by Elwyn T. Reese and published by Elsevier. This book was released on 2013-10-22 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Enzymic Hydrolysis of Cellulose and Related Materials documents the proceedings of a symposium held in March 1962. This book emphasizes the interests of contributors actively engaged in production and properties of the enzymes and cellulose decomposition. Despite the significance of enzymes, relatively little work has been done on this group of enzymes, which include cellulases, hemicellulases, xylanases, disaccharidases, and glycosidases. This compilation aims to have the biological aspects of celluloses and hemicelluloses recognized under the cellulose field, and the cellulases to be considered in future books about cellulose and wood. Other topics discussed in this selection include structural features of cellulose that influence its susceptibility to enzymatic hydrolysis; purification of cellulase and related enzymes; endwise degradation of cellulose; and applications for cellulases. This publication is beneficial to students and researchers conducting work on enzymes and cellulose decomposition.
Download or read book History of the School of Chemical Engineering of Purdue University written by Nicholas A. Peppas and published by . This book was released on 1986 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Filamentous Fungi Fungal technology written by John Edward Smith and published by . This book was released on 1983 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetic Study of Enzymatic Hydrolysis of Exploded Wood written by Canada Centre for Mineral and Energy Technology. Efficiency and Alternative Energy Technology Branch and published by The Branch. This book was released on 1990 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final report of an examination of the mechanism and kinetics of the enzymatic hydrolysis process. The study compares several substrates and enzymes in hydrolysis systems and provides a framework for optimizing hydrolysis engineering analysis and reactor design. The report describes experimental studies of the kinetic factors that govern the hydrolysis of cellulose to glucose by cellulase enzymes; experimental and modelling studies of hydrolysis systems, giving the results of six assays combined into a model of hydrolysis with no arbitrary assumptions; verifies the model predictions with experimental data; compares the experimental data for a wide variety of hydrolysis reactors; and evaluates a variety of designs for hydrolysis reactor systems. Cellulosic substrates used include Sigmacell, a pure, highly crystalline commercial cellulose; Acid-Swollen Cellulose, an amorphous material made from Sigmacell; and Exploded Wood Cellulose, a crystalline lignocellulose.
Download or read book Mechanism of the Enzymatic Hydrolysis of Cellulose written by John H. Hash and published by . This book was released on 1954 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioenergy written by Ashok V. Desai and published by . This book was released on 1990 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enzymatic Hydrolysis of Cellulose written by Bingham Hood Van Dyke and published by . This book was released on 1972 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics of the Enzymatic Hydrolysis of Cotton Cellulose by Cellulase written by Ajoy Kumar Sarkar and published by . This book was released on 2000 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1979 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Impact of Adsorbed Cellulase Inactivation on Enzymatic Hydrolysis Kinetics written by Zhuoliang Ye and published by . This book was released on 2012 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several technical and economic obstacles currently hamper the industrial development of ethanol from biomass. One of the key bottlenecks is the slow kinetics of the enzymatic hydrolysis of cellulose, and the subsequent rate reduction as the reaction proceeds. As a result, this research focused on understanding underlying causes for the slow kinetics, rate reduction, and low yield during cellulose hydrolysis. Mechanisms traditionally thought to cause these results were investigated, such as change of substrate properties and deactivation of enzyme due to environmental mechanisms, but neither was found to contribute significantly to the slow kinetics and low yield. Inactivation due to enzyme-substrate interactions was then proposed as a key factor. Results here show that inactivation of adsorbed enzyme played the most significant role for the hydrolysis rate reduction and low yield based on the following findings: (1) a kinetic model featuring inactivation of adsorbed enzyme accurately accounted for experimental cellulose hydrolysis data for two different types of substrates; the enzyme's apparent maximum reaction rate was found to decrease with a first order exponential decay function of time due to inactivation of the adsorbed enzyme, which has historically always been considered to remain constant. (2) comparison of relative extents of enzyme activity loss due to environmental mechanisms (such as thermal and/or mechanical factors) with inactivation due to enzyme-substrate interactions revealed that enzyme- substrate interactions contributed more towards the overall activity loss than did environmental mechanisms; (3) AFM imaging visualized crowding of Cellobiohydrolase 1 (CBHl) on cellulose substrate surface and thereafter became inactivated; (4) desorption of inactive CBHl was slower compared to desorption of active CBHl, implying that once inactivated, CBH 1 cannot dissociate immediately to find another site on a substrate surface to start another digestive cycle. The overall conclusion is that inactivation of adsorbed enzyme is a primary contributor to the hydrolysis rate reduction. Near complete conversion (99%) of cellulose was predicted by the model to occur within 10-20 hours if inactivation of adsorbed cellulase can be prevented, compared to 7-10 days or more to achieve a lower yield when inactivation occurs. Finally, factors to consider when developing a cellulose hydrolysis process were proposed based on the inactivation mechanism. One important strategy proposed is to desorb inactive cellulases from the substrate, such as with the addition of GdnHCl. Additionally, a technique for scaling-up separation of CBHl was developed. The technique allows for efficient purification of active CBHl from commercial cellulose cocktails at a cost of less than 10% compared to the conventional small-scale FPLC method.
Download or read book Hydrolysis of Cellulose written by Ross D. Brown and published by . This book was released on 1979 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
