Download or read book Constitution and Biosynthesis of Lignin written by Karl Freudenberg and published by [S.l.] : Springer-Verlag New York Incorporated. This book was released on 1968 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neish Constitution and Biosynthesis of Lignin written by Karl Freudenberg and published by . This book was released on 1968 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Constitution and Biosynthesis on Lignin By K Freudenberg and A C Neish written by Karl Freudenberg and published by . This book was released on with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Constitution and Biosynthesis of Lignin written by Karl Freudenberg and published by Springer. This book was released on 1968 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among terrestrial plants the vascular plants are the largest and the most con spicuous. Because of the presence of lignified supporting and conducting tissues such as xylem, terrestrial vascular plants can develop large upright forms. Composed mainly of xylem tissue, the stems of trees are characterized by elongated cells with thickened walls, impregnated by lignin. Diagrams of xylem cells (vessels, tracheids and fibers) can be seen in textbooks of plant anatomy (e. g. ESAU, 1953). A cross section of xylem tissue is shown in the section of this volume written by Professor FREUDENBERG (Fig. 1, p. 98). In general the occurrence of lignin in the plant kingdom is associated with the presence of these cells which comprise xylem. Thus lignin is found in vascular plants such as lycopods, ferns, gymnosperms and angiosperms, whereas it is absent from simple plants such as fungi, and from all other organisms. The mosses are an exceptional group which do not have the cells characteristic of xylem tissue but which contain lignin-like materials. These "moss lignins" have been discussed by Professor FREUDENBERG in this volume, and some doubts have been expressed as to whether or not they are true lignins (FR. * pp. 113-114). Work on the chemistry of lignin indicates that it is a polymer derived from the phenylpropanoid compound, coniferyl alcohol and related alcohols.
Download or read book Lignin and Lignans written by Cyril Heitner and published by CRC Press. This book was released on 2016-04-19 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past four decades, there has been immense progress in every area of lignin science, ranging from the enzymology of lignin biodegradation, to the delignification of wood fiber during pulping and bleaching, to advances in spectroscopy. Lignin and Lignans: Advances in Chemistry captures the developments that have been achieved by world-class
Download or read book Lignin and Lignans as Renewable Raw Materials written by Francisco G. Calvo-Flores and published by John Wiley & Sons. This book was released on 2015-12-14 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: As naturally occurring and abundant sources of non-fossil carbon, lignin and lignans offer exciting possibilities as a source of commercially valuable products, moving away from petrochemical-based feedstocks in favour of renewable raw materials. Lignin can be used directly in fields such as agriculture, livestock, soil rehabilitation, bioremediation and the polymer industry, or it can be chemically modified for the fabrication of specialty and high-value chemicals such as resins, adhesives, fuels and greases. Lignin and Lignans as Renewable Raw Materials presents a multidisciplinary overview of the state-of-the-art and future prospects of lignin and lignans. The book discusses the origin, structure, function and applications of both types of compounds, describing the main resources and values of these products as carbon raw materials. Topics covered include: • Structure and physicochemical properties • Lignin detection methods • Biosynthesis of lignin • Isolation methods • Characterization and modification of lignins • Applications of modified and unmodified lignins • Lignans: structure, chemical and biological properties • Future perspectives This book is a comprehensive resource for researchers, scientists and engineers in academia and industry working on new possibilities for the application of renewable raw materials. For more information on the Wiley Series in Renewable Resources, visit www.wiley.com/go/rrs
Download or read book Lignin written by Matheus Poletto and published by BoD – Books on Demand. This book was released on 2018-03-21 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin - Trends and Applications consists of 11 chapters related to the lignin structure, modification, depolymerization, degradation process, computational modeling, and applications. This is a useful book for readers from diverse areas, such as physics, chemistry, biology, materials science, and engineering. It is expected that this book may expand the reader's knowledge about this complex natural polymer.
Download or read book Fundamentals of Thermochemical Biomass Conversion written by R.P. Overend and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the world many projects have been underway to investigate the conversion of renewable biomass into energy and synthetic fuels by thermo chemical methods such as combustion, pyrolysis, gasification and lique faction. While many of these represent prior art used during the early 20th century, the recent decade since the 1970s oil shock has immeasurably increased the knowledge base for such processes. Much of the new knowledge has been gained by persons who were not trained in classical wood chemistry and there have not yet been many attempts to synthesize the knowledge into a corpus of systematic information. To bring this about the International Energy Agency's Forestry Energy collaboration, the Gas Research Institute, the National Research Council of Canada and the US Department of Energy jointly sponsored a conference on the Fundamentals of Thermochemical Biomass Conversion in Estes Park, Colorado which was held on October 18-22, 1982. The Conference, which was structured around invited plenary papers and contributions from researchers, served as the basis for the papers in this volume which reflect the substantial conclusions of the Conference. During the planning for the Conference, it was realized by the editors in their capacity as Co-chairmen that a major problem in biomass research was the lack of reproducibility between reported experiments and their inter comparison on account of the heterogeneity of biomass materials. A well known wood chemist, George M.
Download or read book Wood Chemistry written by Eero Sjostrom and published by Elsevier. This book was released on 2013-10-22 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood Chemistry, Fundamentals and Applications, Second Edition, examines the basic principles of wood chemistry and its potential applications to pulping and papermaking, wood and wood waste utilization, pulping by-products for production of chemicals and energy, and biomass conversion.
Download or read book Graphene from Natural Sources written by Amir Al-Ahmed and published by CRC Press. This book was released on 2022-07-18 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the synthesis of graphene obtained from different natural raw materials and waste products as a low-cost, environmentally friendly alternative that delivers a quality final product. Expert researchers review potential sources of natural raw materials and waste products, methods or characterization, graphene synthesis considerations, and important applications. FEATURES Explores the different approaches to the synthesis of graphene oxide (GO) and reduced graphene oxide (rGO) from natural and industrial carbonaceous wastes Outlines the modification and characterization methods of GO and rGO Addresses the characterization methods of GO and rGO Details applications of GO and rGO created from natural sources Graphene is a multidisciplinary material with applications in almost every sector of science and engineering. Graphene from Natural Sources: Synthesis, Characterization, and Applications is a noteworthy reference for material scientists and engineers in academia and industry interested in reducing costs and employing green synthesis methods in their work.
Download or read book Handbook of Biopolymer Based Materials written by Sabu Thomas and published by John Wiley & Sons. This book was released on 2013-04-16 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first systematic scientific reference in the area of micro- and nanostructured biopolymer systems discusses in two volumes the morphology, structure, dynamics, properties and applications of all important biopolymers, as well as their blends, composites, interpenetrating networks and gels. Selected leading researchers from industry, academia, government and private research institutions around the globe comprehensively review recent accomplishments in the field. They examine the current state of the art, new challenges, and opportunities, discussing all the synthetic routes to the generation of both micro- and nano-morphologies, as well as the synthesis, characterization and application of porous biopolymers. An outstanding resource for anyone involved in the fi eld of eco-friendly biomaterials for advanced technologies.
Download or read book Lignin in Polymer Composites written by Omar Faruk and published by William Andrew. This book was released on 2015-10-24 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin in Polymer Composites presents the latest information on lignin, a natural polymer derived from renewable resources that has great potential as a reinforcement material in composites because it is non-toxic, inexpensive, available in large amounts, and is starting to be deployed in various materials applications due to its advantages over more traditional oil-based materials. This book reviews the state-of-the-art on the topic and their applications to composites, including thermoplastic, thermosets, rubber, foams, bioplastics, nanocomposites, and lignin-based carbon fiber composites. In addition, the book covers critical assessments on the economics of lignin, including a cost-performance analysis that discusses its strengths and weaknesses as a reinforcement material. Finally, the huge potential applications of lignin in industry are explored with respect to its low cost, recyclable properties, and fully biodegradable composites, and the way they apply to the automotive, construction, and packaging industries. Reviews the state-of-the-art on the topic and their applications to composites, including thermoplastic, thermosets, rubber, foams, bioplastics, nanocomposites, and lignin-based carbon fiber composites Presents the essential processing and properties information for engineers and materials scientists, enabling the use of lignin in composites Provides critical insight into the applications and future trends of lignin-based composites, including advantages, shortcomings, and economics Includes a thorough coverage of extraction, modification, processing, and applications of the material
Download or read book Methods in Lignin Chemistry written by Stephen Y. Lin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date compilation of the theoretical background and practical procedures involved in lignin characterization. Whenever possible, the procedures are presented in sufficient detail to enable the reader to perform the analysis solely by following the step-by-step description. The advantages and limitations of individual methods are discussed and, more importantly, illustrated by typical analytical data in comparison to results obtained from other methods. This handbook serves the need of researchers and other professionals in academia, the pulp and paper industry as well as allied industries. It is equally useful for those with no previous experience in lignin or lignocellulosics.
Download or read book Carbon Fibre from Lignin written by Pratima Bajpai and published by Springer. This book was released on 2017-03-20 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents detailed information on the production and properties of carbon fibers derived from lignin precursors. Focusing on future directions in the carbon fiber industry, it also introduces a novel process for obtaining high-purity lignin, a key aspect in the manufacture of high-quality carbon fiber. Carbon fiber is currently the most preferred lightweight manufacturing material and is rapidly becoming the material of choice for manufacturers around the world. Although more than 80% of commercial carbon fiber is estimated to use PAN (polyacrylonitrile) as a precursor, carbon fiber manufactured from PAN is expensive and therefore its application is limited to high-performance structural materials. Lignin is the second most abundant biopolymer in nature after cellulose and offers a carbon-rich, renewable resource. As a byproduct of the pulp and paper industry and the production of cellulosic ethanol, lignin is also available at low cost, making it an economically attractive alternative to PAN for the production of carbon fibers, as highlighted in this book. The information presented will be of interest to all those involved in the investigation of carbon fiber materials, carbon fiber manufacturers and carbon fiber users.
Download or read book Microbial and Enzymatic Degradation of Wood and Wood Components written by Karl-Erik L. Eriksson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oil crisis during the 1970s turned interest towards the utilization of renewable resources and towards lignocellulosics in particular. The 1970s were also the cradle period of biotechnology, and the years when biotechnical utilization of lignocellulosic waste from agriculture and forestry gained priori ty. This was a logical conclusion since one of nature's most important biologi cal reactions is the conversion of wood and other lignocellulosic materials to carbon dioxide, water and humic substances. However, while biotechnology in other areas like medicine and pharmacology concerned production of expen sive products on a small scale, biotechnical utilization and conversion of ligno cellulosics meant production of inexpensive products on a large scale. Biotechnical utilization of lignocellulosic materials is therefore a very difficult task, and the commercial utilization of this technology has not progressed as rapidly as one would have desired. One reason for this was the lack of basic knowledge of enzyme mechanisms involved in the degradation and conversion of wood, other lignocellulosics and their individual components. There are also risks associated with initiating a technical development before a stable platform of knowledge is available. Several of the projects started with en thusiasm have therefore suffered some loss of interest. Also contributing to this failing interest is the fact that the oil crisis at the time was not a real one. At present, nobody predicts a rapid exhaustion of the oil resources and fuel production from lignocellulosics is no longer a high priority.
Download or read book Natural Products of Woody Plants written by John W. Rowe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood as found in trees and bushes was of primary importance to ancient humans in their struggle to control their environment. Subsequent evolution through the Bronze and Iron Ages up to our present technologically advanced society has hardly diminished the importance of wood. Today, its role as a source of paper products, furniture, building materials, and fuel is still of major significance. Wood consists of a mixture of polymers, often referred to as lignocellulose. The cellulose micro fibrils consist of an immensely strong, linear polymer of glucose. They are associated with smaller, more complex polymers composed of various sugars called hemicelluloses. These polysaccharides are embedded in an amorphous phenylpropane polymer, lignin, creating a remarkably strong com posite structure, the lignocellulosic cell wall. Wood also contains materials that are largely extraneous to this lignocellulosic cell wall. These extracellular substances can range from less than 1070 to about 35% of the dry weight of the wood, but the usual range is 2% -10%. Among these components are the mineral constituents, salts of calcium, potassium, sodium, and other metals, particularly those present in the soil where the tree is growing. Some of the extraneous components of wood are too insoluble to be ex tracted by inert solvents and remain to give extractive-free wood its color; very often these are high-molecular-weight polyphenolics.
Download or read book Valorization of Biomass to Bioproducts written by Vijai Kumar Gupta and published by Elsevier. This book was released on 2023-02-21 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valorization of Biomass to Bioproducts: Biochemicals and Biomaterials discusses the-innovation and blueprint of biochemical extraction processes and the ideal utilization of biochemicals that help form the basis of green extraction to produce biochemicals from biomass. The book comprises a rising arena of research focused on designing novel, environmentally-friendly, naturally-derived and tenable biochemicals from biomass that serve several biosustainable purposes. Due to increasing demand in chemical and biochemical products, and to minimize industrial space, there is an increased need to recycle wastes and design cost-effective chemical and biochemical units. As such, knowledge on the recovery of biochemicals, bioconversions and extraction technologies is essential. Highlights biotechnologies, concepts and commercial developments in the area of biomass to biochemicals production Covers numerous bioprocessing technologies Includes process optimization and recent challenges Provides applications of biobased/natural biochemicals Consolidates the most recent research surrounding the disciplines of biochemistry, biotechnology, biochemical engineering and microbiology
