Search results for: natural-polyphenols-from-wood

Natural Polyphenols from Wood

Author : Kun Cheng
File Size : 60.5 MB
Format : PDF, ePub, Mobi
Download : 662
Read : 914
Download »
Natural Polyphenols from Wood: Tannin and Lignin – An Industrial Perspective is a detailed guide to the sourcing and processing of tannin and lignin for valuable advanced applications across areas such as fuels, chemicals, drugs, and food. Drawing on the latest academic research and patent literature, this book provides strong practical understanding of the use of these valuable materials in novel industrial applications. This book introduces natural polyphenols from wood and the fundamental aspects of carbon management within the tree. In-depth presentation of extraction and characterization methods is followed by an extensive coverage of practical and industrial applications of wood polyphenols. This is an essential resource for researchers and advanced students working with lignin or tannin, and across biopolymer science, biomass, wood chemistry, paper, wood adhesives, polymer materials, renewable resources, and biotechnology. It also supports industrial R&D and scientists working with wood polyphenols or bio-based polymers. This book re-evaluates wood polyphenols from an industrial perspective, revealing the latest techniques and drawing on patent literature. It addresses fundamental issues of wood polyphenols, such as carbon cycle, wood fractionation, structure, and properties. It offers a comprehensive review of practical applications, including lignin depolymerization, wood reconstruction, fuels, chemicals, drugs, and food.

Utilization of Natural Polyphenols for the Production of Wood Adhesives

Author : G. Weissmann
File Size : 25.77 MB
Format : PDF, Kindle
Download : 158
Read : 455
Download »

Plant Polyphenols

Author : Richard W. Hemingway
File Size : 73.58 MB
Format : PDF, Docs
Download : 535
Read : 180
Download »
This book was developed from the proceedings of the 2nd North American Tan nin Conference held in Houghton, Michigan, June, 1991. The objective of this con ference was to bring together people with a common interest in plant polyphenols and to promote interdisciplinary interactions that will lead to a bet ter understand ing of the importance of these substances. Another objective of this conference was to extend the 'tannin family' by making special efforts to encourage participation by scientists outside the United States, obtain more coverage of the hydrolyzable tannins, and further broaden the scope of coverage from the initial concentration on forestry and forest products. Com parison of the contents of this book with 'Chemistry and Significance of Condensed Tannins' that resulted from the proceedings of the 1st North American Tannin Conference shows the degree that these objectives were met. In developing the second conference, care was taken to assure that this book extends rather than duplicates the coverage of the first conference. Therefore, the two books should be taken together to obtain an up to date coverage of the broad area of chemistry and significance of plant polyphenols. Our thanks go to the authors who so kindly contributed chapters and so pa tiently responded to our requests. We thank the Conference Assistance Staff of Michigan Technological University for their help in planning and conducting the conference.

Adhesives for Wood and Lignocellulosic Materials

Author : R. N. Kumar
File Size : 65.74 MB
Format : PDF, Mobi
Download : 349
Read : 696
Download »
The book is a comprehensive treatment of the subject covering a wide range of subjects uniquely available in a single source for the first time. A material science approach has been adopted in dealing with wood adhesion and adhesives. The approach of the authors was to bring out hierarchical cellular and porous characteristics of wood with polymeric cell wall structure, along with the associated non-cell wall extractives, which greatly influence the interaction of wood substrate with polymeric adhesives in a very unique manner not existent in the case of other adherends. Environmental aspects, in particular formaldehyde emission from adhesive bonded wood products, has been included. A significant feature of the book is the inclusion of polymeric matrix materials for wood polymer composites.

Wood Production Wood Technology and Biotechnological Impacts

Author : Ursula Kües
File Size : 35.36 MB
Format : PDF, ePub, Mobi
Download : 124
Read : 771
Download »

Plants for Medicines

Author : DJ Collins
File Size : 49.40 MB
Format : PDF, Kindle
Download : 864
Read : 1084
Download »
This book gives details of alkaloid and anti-tumour screening by the CSIRO of nearly 2000 species, the pharmacological testing of the alkaloids of selected species, and the chemical fractionation of those species which had reproducible tumour-inhibiting properties. The book includes 64 colour plates and over 400 line illustrations of chemical structures.

Polyphenols in Plants

Author : Ronald Ross Watson
File Size : 36.10 MB
Format : PDF, ePub, Docs
Download : 198
Read : 1215
Download »
Polyphenols in Plants: Isolation, Purification and Extract Preparation, 2nd edition, provides a detailed insight into polyphenols that occur naturally in plants and how they can be affected during growth and development, then effectively removed and optimized for various applications in food production. Historically, plants have been the major sources for drugs and health promotion. While there are a small number of nutrients contained, the growing focus is on the very diverse, complex ring structures: polyphenols that are not nutritious. In order to study or use them in patient treatment, the polyphenols need to be isolated, identified, and purified for application and study. This book brings together experts in the field who share their ongoing examination of isolation and purification of polyphenols as well as determination of their structures and composition. Polyphenols in Plants covers a range of new topics including polyphenols in vegetable waste and agricultural byproducts, extraction methods and characterization of polyphenols, and isolation techniques in the development of new compounds and their use in cancer therapy. This book will be useful to plant scientists and dietary supplement producers, as well as scientists in the food industry and alternative medicine who are interested in the specific health benefits of various dietary extracts and other polyphenol resources. Fully revised and updated to present the latest developments in the field Advances understanding of isolation, characterization, and identification of critical polyphenols vital to industrial development as therapies Defines conditions of growth affecting polyphenol levels Describes techniques critical to identifying and defining polyphenols

Studies in Natural Products Chemistry

Author : Atta-ur Rahman
File Size : 27.70 MB
Format : PDF, ePub
Download : 978
Read : 968
Download »
Studies in Natural Products Chemistry covers the synthesis, testing, and recording of the medicinal properties of natural products, providing cutting-edge accounts of the fascinating developments in the isolation, structure elucidation, synthesis, biosynthesis, and pharmacology of a diverse array of bioactive natural products. Natural products in the plant and animal kingdom offer a huge diversity of chemical structures that are the result of biosynthetic processes that have been modulated over the millennia through genetic effects. With the rapid developments in spectroscopic techniques and accompanying advances in high-throughput screening techniques, it has become possible to isolate and then rapidly determine the structures and biological activity of natural products, thus opening up exciting opportunities in the field of new drug development in the pharmaceutical industry. Focuses on the chemistry of bioactive natural products Contains contributions by leading authorities in the field Presents sources of new pharmacophores


Author : Xiaosu Yi
File Size : 46.25 MB
Format : PDF, Docs
Download : 276
Read : 687
Download »
Today, mainly man-made materials, such as carbon and glass fibers, are used to produce composite parts in aviation. Renewable materials, such as natural fibers or bio-sourced resin systems, have not yet found their way into aviation. The project ECO-COMPASS aims to evaluate the potential applications of ecologically improved composite materials in the aviation sector in an international collaboration of Chinese and European partners. Natural fibers such as flax and ramie will be used for different types of reinforcements and sandwich cores. Furthermore, bio-based epoxy resins to substitute bisphenol-A based epoxy resins in secondary structures are under investigation. Adapted material protection technologies to reduce environmental influence and to improve fire resistance are needed to fulfil the demanding safety requirements in aviation. Modelling and simulation of chosen eco-composites aims for an optimized use of materials while a Life Cycle Assessment aims to prove the ecological advantages compared to synthetic state-of-the-art materials. This Special Issue provides selected papers from the project consortium partners.

Wood Microbiology

Author : Robert A. Zabel
File Size : 42.88 MB
Format : PDF, ePub
Download : 886
Read : 934
Download »
Wood Microbiology, Second Edition, presents the latest advances in wood decay and its prevention. Coverage includes classification of fungi and bacteria, factors affecting growth and survival, fungal metabolism, and wood chemistry. There are also chapters that focus on the anatomical aspects, chemical changes, and ultrastructural effects of wood decay. Additionally, this book discusses major issues associated with wood decay, detecting decay, and how to take protective action against it. This is a one-stop reference resource for wood scientists, wood processing and preserving professionals, foresters and forest pathologists, as well as students of forestry, and wood science and technology courses. It is authored by two leading experts with over 80 years of experience working with timber durability. Provides updated taxonomy and classification of decay groups Presents detailed descriptions of anatomical, chemical, and ultrastructural aspects of wood decay Includes discussions on major issues associated with decay, how to detect decay and preventative measures

Wood Extractives and Their Significance to the Pulp and Paper Industries

Author : W. E. Hillis
File Size : 46.90 MB
Format : PDF, Kindle
Download : 821
Read : 468
Download »
Wood Extractives and their Significance to the Pulp and Paper Industries focuses on the promotion of the study of the biochemistry of wood extractives and to elaborate on the effects these materials may pose to the manufacture of pulp and paper. The publication first elaborates on wood, distribution and formation of polyphenols within the tree, and the simple polyphenolic constituents of plants. Discussions focus on the factors affecting the amounts of polyphenols present in living tissues, glycosidic combination, flavonols, anthocyanins, and leucoanthocyanins, formation of carbohydrates in the tree, types of polyphenols in different tissues of uninjured trees, and variation in structure and properties of wood. The text then examines lignans and condensed and hydrolyzable tannins. The manuscript takes a look at the alicyclic acid precursors of polyphenols, biosynthesis of polyphenols, and tropolones. Topics include tropolones occurring in wood, polymeric polyphenols, synthesis of pre-aromatic compounds, shikimic acid, and quinic acid. The book then ponders on the influence of extractives on the pulping of wood and the influence of extractives on the color of ground wood and newsprint. The publication is a valuable reference for researchers interested in the processes and methodologies involved in the manufacture of pulp and paper.

Fundamental and Applied Nano Electromagnetics

Author : Antonio Maffucci
File Size : 75.59 MB
Format : PDF, ePub, Mobi
Download : 559
Read : 1222
Download »
This book presents the most relevant and recent results in the study of “Nanoelectromagnetics”, a recently born fascinating research discipline, whose popularity is fast arising with the intensive penetration of nanotechnology in the world of electronics applications. Studying nanoelectromagnetics means describing the interaction between electromagnetic radiation and quantum mechanical low-dimensional systems: this requires a full interdisciplinary approach, the reason why this book hosts contributions from the fields of fundamental and applied electromagnetics, of chemistry and technology of nanostructures and nanocomposites, of physics of nano-structures systems, etc. The book is aimed at providing the reader with the state of the art in Nanoelectromagnetics, from theoretical modelling to experimental characterization, from design to synthesis, from DC to microwave and terahertz applications, from the study of fundamental material properties to the analysis of complex systems and devices, from commercial thin-film coatings to metamaterials to circuit components and nanodevices. The book is intended as a reference in advanced courses for graduate students and as a guide for researchers and industrial professionals involved in nanoelectronics and nanophotonics applications.

Biorelated Polymers

Author : Emo Chiellini
File Size : 67.86 MB
Format : PDF, ePub, Docs
Download : 724
Read : 913
Download »
This book includes papers on polymeric materials from renewable resources known as `Biorelated Polymers and Plastics', and issues are bound to their utilization and environmental impact in their production, conversions to manufacts and ultimate disposal of post-costume manufacts. Modern industrial developments inspired by the new concepts of sustainability and ecocompatibility require a deeper attention to renewable resources as a new-old source of raw material and feedback. This new trend, occurring not only in industrialized countries but also in emerging countries and countries in transition, thoroughly permeates the polymer and plastic industry, due to the big impact that those materials have on the modern way of life. Plastic waste, specifically that stemming from segments of packaging, containers for solids and liquids and single use items, is attracting much effort from municipality officers, producers and converters, aimed at finding a harmonized solution among the various options available for their appropriate management. In this respect, polymeric materials of natural origin (biopolymers), as well as materials from renewable resources useable for the production of monomeric precursors, or semi-synthetic polymeric materials, constitute a focal point for future industrial development in the production of polymers and plastics. The present book contains much valuable information and scientific hints on a modern approach aimed at designing processes and products with minimal negative environmental impact.

Wood Chemistry

Author : Eero Sjostrom
File Size : 32.9 MB
Format : PDF, ePub, Mobi
Download : 250
Read : 954
Download »
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.

Energy from Biomass

Author : International Conference on Biomass
File Size : 73.14 MB
Format : PDF, ePub
Download : 941
Read : 250
Download »
Verzameling conferentieverslagen (188 stuks) van afgevaardigden uit de vijf werelddelen ingedeeld naar: huidige stand en toekomstige ontwikkelingen van biomassa-hulpbronnen (biomassa voor energie, verbeteren van biomassa-produktiviteit, algen voor biomassa en produkten met hoge energiewaarde), technologie in geindustrialiseerde landen, diverse aspekten van produktie in ontwikkelingslanden

Polyphenols in Human Health and Disease

Author : Ronald Ross Watson
File Size : 56.73 MB
Format : PDF, ePub, Docs
Download : 149
Read : 458
Download »
Polyphenols in Prevention and Treatment of Human Disease, Second Edition authoritatively covers evidence of the powerful health benefits of polyphenols, touching on cardiovascular disease, cancer, obesity, diabetes and osteoporosis. This collection represents the contributions of an international group of experts in polyphenol research who share their expertise in endocrinology, public health, cardiology, pharmacology, agriculture and veterinary science. Researchers from diverse backgrounds will gain insight into how clinical observations and practices can feed back into the research cycle, thus allowing them to develop more targeted insights into the mechanisms of disease. This reference fills a void in research where nutritionists and alternative therapies may be applicable. Describes polyphenol modulation of blood flow and oxygenation as a potential mechanism of protection against vascular atherosclerosis Describes how polyphenols and antioxidants frequently change immune defenses and actions Focuses on the most important areas of research and provides insights into their relationships and translational opportunities

Phenolic Compounds in Fruit Beverages

Author : António Manuel Jordão
File Size : 88.41 MB
Format : PDF, Docs
Download : 608
Read : 1019
Download »
This book is a printed edition of the Special Issue "Phenolic Compounds in Fruit Beverages" that was published in Beverages

Natural Products of Woody Plants

Author : John W. Rowe
File Size : 43.18 MB
Format : PDF, ePub, Docs
Download : 296
Read : 193
Download »
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.

Plant Polyphenols 2

Author : Georg G. Gross
File Size : 50.99 MB
Format : PDF, Mobi
Download : 420
Read : 854
Download »
This volume summarizes current research on the influence of plant polyphenols on human health, promoting collaboration between chemists and biologists to improve our understanding of their biological significance, and expanding the possibilities for their use.

Recent Advances in Polyphenol Research

Author : Celestino Santos-Buelga
File Size : 83.81 MB
Format : PDF, Docs
Download : 687
Read : 921
Download »
Recent Advances in Polyphenol Research Volume 2 Edited by Santos-Buelga, Escribano-Bailon and Lattanzio Plant phenolics are secondary metabolites that constitute one of the most common and widespread groups of substances in plants. Polyphenols have a large and diverse array of beneficial effects on both plants and animals. For example they are famous as antioxidants, hormones, constituents of essential oils and natural neurotransmitters. Sponsored by Groupe Polyphenols, this publication, which is the second volume in this ground-breaking series, is edited by Celestino Santos-Buelga, Maria Teresa Escribano-Bailon, and Vincenzo Lattanzio, who have drawn together an impressive list of internationally respected authors, each providing cutting edge chapters covering some of the major topics of recent research and interest. Information included in this important new addition to the series include the following areas: • Flavonoid chemistry of the leguminosae • Chemistry and biological activity of ellagitannins • Chemistry and function of anthocyanins in plants • An update of chemical pathways leading to new phenolic pigments during wine ageing • Metabolic engineering of the flavonoid pathway • The translation of chemical properties of polyphenols into biological activity with impacts in human health • Plant phenolic compounds controlling leaf movement • Biological activity of phenolics in plants Chemists, biochemists, plant scientists, pharmacognosists and pharmacologists, food scientists and nutritionists will all find this book an invaluable resource. Libraries in all universities and research establishments where these subjects are studied and taught should have copies on their shelves.