Biosynthesis and Biodegradation of Cellulose

A gathering of articles bringing together knowledge of both the synthesis and degradation of a pervasive biological substance, cellulose.

Biosynthesis and Biodegradation of Cellulose

Author: Candace H. Haigler

Publisher: CRC Press

ISBN: 9780849383991

Page: 704

View: 535

A gathering of articles bringing together knowledge of both the synthesis and degradation of a pervasive biological substance, cellulose. Topics include native cellulose; particle rosettes and terminal globules; microfibril biogenesis; synthesis in Acetobacter xylinum ; biodegradation measurement; e

Biodegradation of Cellulose

FROM THE AUTHOR'S PREFACE This book . . . is focused on the structure and function relationships of the four major hydrolytic enzymes, cellulases, cellobiohydrolases, b-glucosidases, and xylanases as it relates to their mechanism of action.

Biodegradation of Cellulose

Author: Anthony J. Clarke

Publisher: CRC Press

ISBN: 9781566764148

Page: 272

View: 507

FROM THE AUTHOR'S PREFACE This book . . . is focused on the structure and function relationships of the four major hydrolytic enzymes, cellulases, cellobiohydrolases, b-glucosidases, and xylanases as it relates to their mechanism of action. It should be of interest to biotechnologists and industrial researchers interested in manipulating these enzymes to their full potential as catalysts for various current and new applications. It begins with an overview of the nature of cellulose and heteroxylan, followed by a description of the enzymes involved in its hydrolysis, their general structure, characteristics, and classification. Chapter 3 discusses how these various enzymes are integrated and associated for the efficient solubilization of cellulose and heteroxylan. This includes a review of the literature concerning the cellulosomes and other cellulolytic complexes. The chapter on production and purification provides an overview of this subject matter. . . . These first four chapters thus set the stage for the more comprehensive discussion of the mechanism of action of each of the primary hydrolases which follows. . . . [T]he data pertaining to the catalytic mechanism of both the retaining and inverting forms of these enzymes since such studies were initiated on cellulases . . . in 1954 is reviewed in Chapter 5. The book concludes with an overview of the mode of action of the enzymes and a discussion, citing a few examples, of how the modern methods of molecular biology, enzymology, and X-ray crystallography are being used to manipulate selected enzymes for a variety of biotechnological and industrial purposes. The information in this new book will be of value to scientists and researchers working in the areas of biochemistry, botany, crop science, ecology, microbiology and mycology, in addition to those in the forestry and forest product industries.

Biochemistry and Genetics of Cellulose Degradation

This volume reviews basic research into the biochemistry and genetics of lignocellulose biodegradation; the breakdown of cellulose containing products utilizing microorganisms.

Biochemistry and Genetics of Cellulose Degradation

Author: Pierre Beguin

Publisher:

ISBN:

Page: 428

View: 457

This volume reviews basic research into the biochemistry and genetics of lignocellulose biodegradation; the breakdown of cellulose containing products utilizing microorganisms. This topic has received much attention of late because of possibilities for the biotechnology industry and because it is hoped that advances in the field will make a contribution to the energy crisis by utilizing biomass. However, there remains a good deal of basic research still to be done before full exploitation can be achieved.

Handbook on Coal Lignin Wood and Rosin Processing

The Major contents of the book are coal, analysis of coal and coke, cotton, lignin and hemicelluloses, degradation of wood, CCA-treated wood, wood-polymer composites, lignocellulosic-plastic composites from recycled materials, chemical ...

Handbook on Coal  Lignin  Wood and Rosin Processing

Author: Dr. H. Panda

Publisher: NIIR PROJECT CONSULTANCY SERVICES

ISBN: 9381039747

Page: 512

View: 365

Coal is one of the world's most plentiful energy resources. Coal is one of the fastest growing forms of energy after renewable sources and its share in the global primary energy consumption increasing rapidly. Lignin is the most abundant natural raw material available on Earth in terms of solar energy storage. Lignin is a complex chemical compound, cross linked polymer that forms a large molecular structure. Lignin can be used as a green alternative to many petroleum-derived substances, such as fuels, resins, rubber additives, thermoplastic blends and pharmaceuticals. Rosin is a complex mixture of mainly resin acids and small amount of non-acidic components. Energy markets are evolving with technological advancements supporting rapid growth in renewable energy capacity. The coal market is set to witness great boost in near future because of the rising government initiatives. Coal is one of the main power generation sources all over the world. The factors that are favoring the market growth include rising electricity demand and rapid industrialization. Presently the global coal industry market is valued at $9.4 with CAGR of 11.21 % is poised to reach $22 billion in coming years. Asia Pacific has the larger demand and emerging as a larger supplier of Coal. The present global lignin market demand is estimated at $ 4,222.1 million and is expected to reach $6,190.5 million in future. The Major contents of the book are coal, analysis of coal and coke, cotton, lignin and hemicelluloses, degradation of wood, CCA-treated wood, wood-polymer composites, lignocellulosic-plastic composites from recycled materials, chemical modification of wood fiber, delignification of wood with pernitric acid, rosin and rosin derivatives, polymerizable half esters of rosin. It describes the manufacturing processes and photographs of plant & machinery with supplier’s contact details. It will be a standard reference book for professionals, entrepreneurs, those studying and researching in this important area and others interested in the field of these industries.

Biological Degradation of Cellulose

The esterification of cellulose with nitric acid is spoken of , incorrectly , as '
nitration ' . Cellulose reacts with nitric acid , in the presence of a dehydrating
agent ( e . g . sulphuric acid ) to produce mixtures of the mono - , di - , and
trinitrates 81 .

Biological Degradation of Cellulose

Author: John Allan Gascoigne

Publisher:

ISBN:

Page: 264

View: 141

Cellulose Chemistry and Technology

BIODEGRADATION OF CELLULOSE DERIVATIVE / POLYCAPROLACTONE
BLENDS YUANQIN ZHANG , JING LI , AIMIN CHEN and YONG HUANG
Laboratory of Cellulose and Lignocellulosics Chemistry , Guangzhou Institute of
Chemistry ...

Cellulose Chemistry and Technology

Author:

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View: 271

Microbial Degradation of Cellulose

Reese , E. T. 1957 Biological degradation of cellulose derivatives . Ind . Eng .
Chem . , 49 , 89-93 . 96. Reese , E. T. 1959 Cellulose decomposition : Fungi ;
marine boring and fouling organisms . Friday Harbor Symposia , 265-290 . 97.
Reese ...

Microbial Degradation of Cellulose

Author: Kendall W. King

Publisher:

ISBN:

Page: 55

View: 545

Energy Research Abstracts

... cellulose to methane by defined mixed cultures, 15:27808 (RASE;In Swedish,
English, Norwegian, Dan) Upgrading waste residues into useful products by
biotechnology, 15:7054 (RAF) Biodegradation Cellulose and lignin:
Biodegradation.

Energy Research Abstracts

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Assessing Biodegradation of Selected Textiles

9 Biodegradation of Polymers 2 . 9 . 1 Natural Polymers Cellulose is the most
abundant organic material in nature . Cellulose is a linear polysaccharide made
up of B ( 1 - 4 ) linked D - glucopyranose residues , occasionally cross - linked to
 ...

Assessing Biodegradation of Selected Textiles

Author: Wei Huang

Publisher:

ISBN:

Page: 184

View: 275

Factors Affecting the Rate of Anaerobic Cellulose Biodegradation by a Methanogenic Cellulolytic Enrichment Consortium Sourced from the Organic Municipal Solid Waste

The solubilization of the OFMSW is typically the rate-limiting step in the anaerobic biological stabilization process.

Factors Affecting the Rate of Anaerobic Cellulose Biodegradation by a Methanogenic Cellulolytic Enrichment Consortium Sourced from the Organic Municipal Solid Waste

Author: Judd A. Larson

Publisher:

ISBN:

Page: 360

View: 991

The solubilization of the OFMSW is typically the rate-limiting step in the anaerobic biological stabilization process. There is evidence that the solubilization, or hydrolysis, of cellulose, a major component of the OFMSW, is rate-limited by the amount of attached biofilm, or sessile biomass. This research focused on examining the anaerobic solubilization rate of cellulose as a proxy for the OFMSW. A continuous lab-scale cellulolytic enrichment reactor inoculated by the OFMSW was used as an inoculant source throughout. The bacterial, archaeal, and fungal taxonomy were explored using 16SrRNA and ITS sequencing. No taxonomic temporal trends were evident; however, the sessile biomass fraction was shown to have a unique taxa composition compared to the total and planktonic biomass fractions. A novel colorimetric method was explored for measuring autoinducer-2 (AI-2), a widely used quorum sensing molecule associated with bacterial biofilm regulation. When compared against a known FRET-based AI-2 assay, the colorimetric method was found not viable. The FRET-based assay further showed no evidence of natural AI-2 production. Added AI-2 showed no impact on cellulose biodegradation. Lastly, batch microcosm bottles were used to determine the impact of the concentrations of cellulose and inoculum on the cellulose hydrolysis rate, sessile biomass concentration, and degradation intermediates. The cellulose hydrolysis rate was found not to correlate with the concentration of sessile biomass; however, the hydrolysis rate was directly correlated with the inoculum amount. These data provide evidence of an unknown role for the planktonic biomass in the anaerobic solubilization of cellulose by a methanogenic mixed consortium.

Biopolymers Miscellaneous Biopolymers and Biodegradation of Synthetic Polymers

zyme biodegradability of xylan, cellulose, and starch derivatives. Biotechnol.
Prog. 11. 552-557. Griffin, G. J. L. (1994) Chemistry and Technology of
Biodegradable Polymers. London : Blackie Academic & Professional. Gu, J. -D.,
Eberiel. D. T. ...

Biopolymers  Miscellaneous Biopolymers and Biodegradation of Synthetic Polymers

Author: A. Steinbüchel

Publisher: Wiley-Blackwell

ISBN:

Page: 608

View: 428

Biopolymers Online provides a comprehensive overview of the occurrence, metabolism, and applications of all important biopolymer classes. This reference work treats processes for biotechnological production, isolation from organisms and modification, material properties and technical uses in areas such as chemical and food industries, medicine, pharmacy, and materials science.

Biotechnology Research Abstracts

4336 . isolation , cellulose biodegradation 746 . production , release , fatty acids
stimulation , mutants , Penicillium funiculosum Callulolytic microorganlamı , 3563
biodegradation , peracetic acid pretreatment , straw , Triticum aestivum , stems ...

Biotechnology Research Abstracts

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Monthly. Classified listing of references to worldwide articles dealing with all aspects of biotechnology. Also includes books and conferences. Each entry gives bibliographic information, institutional address of author(s), and abstract. Author and subject index.