Polysaccharides - Группа авторов

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       Library of Congress Cataloging-in-Publication Data

      ISBN 978-1-119-71138-4

      Cover image: Pixabay.Com Cover design by Russell Richardson

      Set in size of 11pt and Minion Pro by Manila Typesetting Company, Makati, Philippines

      Printed in the USA

      10 9 8 7 6 5 4 3 2 1

      Preface

      Polysaccharides are versatile and abundant biopolymers derived from natural resources which have emerged as a sustainable and eco-friendly alternative to conventional polymers or traditional plastics. Due to their unique properties, such as good stability, safety, low tox-icity, low cost, hydrophilicity, supramolecular structure, gelation ability, biodegradability and flexibility, polysaccharides have been the subject of multidisciplinary research in the fields of chemistry, physics, food science, materials science and biology. This book presents the entire spectrum of polysaccharide-related topics—from basic concepts to commercial market applications. The chapters cover various sources, classifications, properties, charac-terizations, processing methods, rheologies and fabrications of polysaccharide-based mate-rials and their composites and gels. Also covered are the applications of polysaccharides in cosmetics, food science, drug delivery, biomedicine, biofuel production, the applications, packaging, chromatography and environmental remediation. In addition to incorporating industrial applications and filling in the gap between exploratory works in the laboratory and viable applications in related ventures, this book also reviews the fabrication of inor-ganic and carbon nanomaterials from polysaccharides.

      Since recent developments in the field are highlighted and real examples of polysaccha-rides in practice are provided along with key references, this book is an invaluable resource for both industry professionals and entrepreneurs in the field. As can be seen from the range of topics covered in the chapters summarized below, the book is also essential read-ing for industrialists, scientists, university professors, lecturers, researchers, doctoral and master students working in the fields of polymer science and technology, material science, chemistry, biology, and medicine.

      Chapter 1 describes the composition of aloe vera mucilaginous gel, its major polysac-charides and their applications. The processes for obtaining the mucilaginous gel and its polysaccharide fractions, as well as the analytical methods applied for the quantification of total carbohydrates, oligosaccharides, acemannan, and free sugars are addressed.

      Chapter 2 provides details about the cell wall of plant, algae, fungi and bacteria as the best reservoir of polysaccharides. Different types of polysaccharides like cellulose, hemi-cellulose and pectin representing the most prominent component of the cell wall are dis-cussed. Furthermore, various applications of polysaccharides in living organisms ranging from their structure to biological signaling are described. Additionally, various commercial applications of polysaccharides in pharmaceutical, paper, cosmetic and food industries are highlighted.

      Chapter 3 primarily concentrates on the major marine polysaccharides, which in light of their diversity and complexity are addressed along with their underlying fundamental principles.

      Chapter 5 deals with all aspects of polysaccharide. It also discusses variable methods to alter agar characteristics according to the type of work, the heterogeneity, synergies, physico-chemical and chemical properties along with mass spectroscopic, NMR, and XRD analyses.

      Chapter 6 addresses the major properties and classifications of natural polysaccharides and deals with the applications of these green and sustainable resources in many different fields and industries, including biomedicine, food, cosmetics, textiles, wastewater treat-ment, and energy production.

      Chapter 7 discusses the properties of chitosan enhanced by the addition of various functional groups. The understanding of chitosan derivatives for various biomedical, envi-ronmental, and food applications which can help in the development of other novel appli-cations are also discussed.

      Chapter 8 discusses six different types of green seaweed containing a large amount of high-value polysaccharides (sulfated galactans, ulvan, sulfated arabinans, sulfated arab-inogalactans and mannans) in their biomass composition. Additionally, these extracted natural carbohydrates have important physiological and biological roles such as having anti-inflammatory, immunomodulation, antioxidant, anticoagulant, and anti-tumor effects in the human body.

      Chapter 9 reveals the specific functional properties and nutritional value in the food applications of salep powder produced from tubers of the Orchidaceae family, an important glucomannan source. The production, cultivation, purification, deacetylation and depo-lymerization of glucomannan show new functional properties, which are summarized in detail.

      Chapter 10 provides concise information on the properties and applications of exudate gums in different fields and industries, such as food, pharmaceutical, textile, paper, paint, cosmetic, nanobiotechnology, and non-food, due to their renewability, low cost, nontoxic-ity, biocompatibility and biodegradability. Also, minor tree gums and their applications are briefly covered.

      Chapter 11 deals with cellulose types and configurations. Plant- and animal-based sources are listed and explained. Also, mechanical and chemical methods for plant decon-struction are discussed. Moreover, different cellulosic derivatives are discussed in detail, encompassing their properties and applications.

      Chapter 12 provides a detailed discussion on starch structure, its physicochemical prop-erties and application of starch and its derivatives. Also, methods of starch modification are briefly discussed.

      Chapter 13 discusses the crystallization behavior of polysaccharides and techniques used in the determination of their crystallization. Applications of crystalline polysaccharides for packaging and biomedical needs are specifically outlined.

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