Green Extraction of Natural Products

Theory and Practice

Author: Farid Chemat,Jochen Strube

Publisher: John Wiley & Sons

ISBN: 3527676813

Category: Science

Page: 384

View: 9002

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Extraction processes are essential steps in numerous industrial applications from perfume over pharmaceutical to fine chemical industry. Nowadays, there are three key aspects in industrial extraction processes: economy and quality, as well as environmental considerations. This book presents a complete picture of current knowledge on green extraction in terms of innovative processes, original methods, alternative solvents and safe products, and provides the necessary theoretical background as well as industrial application examples and environmental impacts. Each chapter is written by experts in the field and the strong focus on green chemistry throughout the book makes this book a unique reference source. This book is intended to be a first step towards a future cooperation in a new extraction of natural products, built to improve both fundamental and green parameters of the techniques and to increase the amount of extracts obtained from renewable resources with a minimum consumption of energy and solvents, and the maximum safety for operators and the environment.

Essential Oils as Reagents in Green Chemistry

Author: Ying Li,Anne-Sylvie Fabiano-Tixier,Farid Chemat

Publisher: Springer

ISBN: 3319084496

Category: Science

Page: 71

View: 6977

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This brief provides a valuable reference for the contribution of essential oils in the green chemistry, mainly in terms of their characteristics corresponding to their compositions, the development of their extraction technologies including both conventional and green process (e.g. microwave, ultrasound), and their sustainable applications as antioxidants, antimicrobials, insecticides, green solvents and synthons for the green synthesis.

Alternative Solvents for Natural Products Extraction

Author: Farid Chemat,Maryline Abert Vian

Publisher: Springer

ISBN: 3662436280

Category: Science

Page: 315

View: 429

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This book presents a complete picture of the current state-of-the-art in alternative and green solvents used for laboratory and industrial natural product extraction in terms of the latest innovations, original methods and safe products. It provides the necessary theoretical background and details on extraction, techniques, mechanisms, protocols, industrial applications, safety precautions and environmental impacts. This book is aimed at professionals from industry, academicians engaged in extraction engineering or natural product chemistry research, and graduate level students. The individual chapters complement one another, were written by respected international researchers and recognized professionals from the industry, and address the latest efforts in the field. It is also the first sourcebook to focus on the rapid developments in this field.

Natural Product Extraction

Principles and Applications

Author: Mauricio A. Rostagno,Juliana M. Prado

Publisher: Royal Society of Chemistry

ISBN: 1849736065

Category: Science

Page: 500

View: 3109

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Natural products are used by food, pharmaceutical and cosmetics industries, so that extraction technologies and potential applications for plant extracts are of interest for many research areas and industrial areas. This book is intended to give a holistic, in-depth view of the techniques available for the extraction of natural products. Besides of conventional techniques, the use of ultrasounds, microwaves, pressurized liquids and supercritical fluids will be discussed in detail. Their fundaments, process parameters and applications will be explored. Examples and case studies will be used to give a balanced outline of recent applications and potential uses of each technique. Furthermore, the most recent trends for the extraction of natural products will also be discussed, including the use of combinatory and hyphenated techniques.

Proceedings of 19th International Conference on Food Processing & Technology 2017

Journal of Food Processing & Technology : Volume 8

Author: ConferenceSeries

Publisher: ConferenceSeries

ISBN: N.A

Category:

Page: 159

View: 3348

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October 23-25, 2017 Paris, France Key Topics: Food Science & Technology: Tools, Techniques and Instrumentation, Food Processing, Preservation and Packaging, Food and Nutrition, Food Microbes: Probiotics and Functional Foods, The Chemistry of Food Ingredients, Food Security: The Rising Crisis and Its Manangement, Food Public Health & Hygene, Food Industry and Health Hazard, Medical Foods: Enteral Nutrient Solution, Food Safety: Prevention and Control, Diary Food and its Commercial Future, Food Waste Management, Food Adultration: Laws policy and governance, Food Marketing and Economics, Baby Food and its Future Potential, Food Farming and Machinery, Food Psychology,

Enhancing Extraction Processes in the Food Industry

Author: Nikolai Lebovka,Eugene Vorobiev,Farid Chemat

Publisher: CRC Press

ISBN: 1439845956

Category: Science

Page: 570

View: 1306

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Extraction is an important operation in food engineering, enabling the recovery of valuable soluble components from raw materials. With increasing energy costs and environmental concerns, industry specialists are looking for improved techniques requiring less solvents and energy consumption. Enhancing Extraction Processes in the Food Industry is a comprehensive resource providing clear descriptions of the latest extraction methods and instruments used in food laboratories. The book begins with an overview of solvent extraction technology. It examines pulsed electric fields and their effect on food engineering, and the potential and limitations of microwave-assisted extraction. It explores diffusion processes and reviews what is known about electrical discharge processes in the extraction of biocompounds. Next, the book summarizes current knowledge on conventional and innovative techniques for the intensification of extractions from food and natural products, focusing on environmental impacts. It reviews recent developments in supercritical CO2 extraction of food and food products, describes the pressurized hot water extraction (PHWE) process, and examines future trends for PHWE. The book also examines essential oil extraction, and the tools and techniques of high pressure-assisted extraction. The authors demonstrate its application using litchi and longan fruits as examples. The final chapters focus on extrusion-assisted extraction, gas-assisted mechanical expression, mechanochemically assisted extraction, reverse micellar extraction, and aqueous two-phase extraction. The book concludes with a chapter on the treatment of soybeans through enzyme-assisted aqueous processing, examining the economics involved as well as the development of the process. A solid review of modern approaches that enhance extraction processes, this volume is destined to pave the way for future research and development in the field.

Modern Techniques and Solvents for the Extraction of Microbial Oils

Author: Alice Meullemiestre,Cassandra Breil,Maryline Abert-Vian,Farid Chemat

Publisher: Springer

ISBN: 3319227173

Category: Science

Page: 52

View: 5225

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A valuable reference presenting many processes that facilitate lipid extraction from micro-organisms. Amongst the techniques included are Folch, Bligh and Dyer methods, and the Soxhlet technique as well as intensified green processes (ultrasound, microwave, supercritical fluid extraction, agro-solvent, accelerated solvent extraction, enzyme-assisted extraction, instant controlled pressure drop, pulse electric field). In addition to a section featuring the analysis of fatty acids by Gas Chromatography and lipids by High-Performance Thin-Layer Chromatography (HPTLC), this brief contains a valuable bibliography on microorganisms (classes, structures) and their applications as a source of value added oils and compounds for food and non-food applications such as biojet fuel.

Natural Products Isolation

Author: Richard J. P. Cannell

Publisher: Springer Science & Business Media

ISBN: 0896033627

Category: Science

Page: 473

View: 9063

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Natural Products Isolation provides a comprehensive introduction to techniques for the extraction and purification of natural products from all biological sources. Geared to scientists with little experience of natural products extraction, but offering even skilled researchers valuable advice and insight, Natural Products Isolation lays the foundation for the potential extractor to isolate natural substances efficiently. Its methods and guidance will almost certainly play a major role in today's natural product discovery and development.

Natural Products Isolation

Author: Satyajit D. Sarker,Zahid Latif,Alexander I. Gray

Publisher: Springer Science & Business Media

ISBN: 1592599559

Category: Medical

Page: 515

View: 5928

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Natural Products Isolation: Second Edition presents a practical overview of just how natural products can be extracted, prepared, and isolated from the source material. Maintaining the main theme and philosophy of the first edition, this second edition incorporates all the new significant developments in this field of research. The chapters are divided into four distinct sections: introduction, extraction, chromatography, and special topics. This second edition provides substantial backround information for natural product researchers and will prove a useful reference guide to all of the available techniques.

Extraction of Natural Products Using Near-Critical Solvents

Author: M.B. King,T.R. Bott

Publisher: Springer Science & Business Media

ISBN: 9780751400694

Category: Science

Page: 325

View: 2106

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The aim of this book is to present the current state of the art of extracting natural products with near-critical solvents and to view the possibilities of further extensions of the technique. Relevant background theory is given but does not dominate the book. Carbon dioxide is the near-critical solvent used in most recent applications and inevitably receives prominence. In addition to general descriptions and reviews, the book contains three chapters by indus trial practitioners who describe in detail the operation of their processes and discuss the market for their products. Sections on the design of the pressure vessels and pumps required in these processes and on the acquisition of the data required for design are included. The costing of the processes is also discussed. There is good scope for combining a near-critical extraction step with other process steps in which the properties of near-critical solvents are utilised, for example as a reaction or crystallisation medium and a chapter is devoted to these important aspects. It is hoped that the work will be found to contain a great deal of specific information of use to those already familiar with this field. However the style of presentation and content is such that it will also be useful as an introduction. In particular it will be helpful to those wondering if this form of separation method has anything to offer for them, whether they are engineers, chemists or managers in industry, or in academic or research institutions.

Naturstoffe der chemischen Industrie

Author: Bernd Schäfer

Publisher: Spektrum Akademischer Verlag

ISBN: 9783827416148

Category: Science

Page: 544

View: 8202

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Dieses Buch geht auf eine Vorlesung an der Universität Heidelberg zurück und richtet sich in erster Linie an Studenten, aber auch an Hochschuldozenten, Chemielehrer und Industriechemiker. Es vermittelt Einblicke in die moderne Naturstoffchemie und die Entwicklung komplexer Moleküle (asymmetrische und heterozyklische Verbindungen, polyzyklische Strukturen, makrozyklische und kleine Ringe) in der chemischen Industrie. Ein wichtiges Anliegen des Autors besteht darin, exemplarisch zu belegen, welche Aspekte eine Rolle spielen, wenn man im technischen Maßstab komplexe Verbindungen "auf elegantem Weg" herstellen will. So lernt der Leser die Grundlagen, die für einen jungen Chemiker in der chemischen Industrie unentbehrlich sind. Das Buch deckt ein breites Spektrum von Naturstoffen oder davon abgeleiteten Substanzen ab, darunter Farbstoffe wie etwa Indigo, in der Nahrungsmittelindustrie verwendete Verbindungen wie Coffein, Vanillin, Carotenoide und Aminosäuren, Arzneimittel wie Antibiotika, Opioide, Lipstatin und Steroide, Agrochemikalien wie Herbizide, Fungizide und Insektizide oder auch Duftstoffe wie Moschus und Damascon. Jedes Kapitel liefert auch historische und soziale Hintergrundinformationen zu dem jeweiligen Naturstoff und beschreibt seine biologische Aktivität, seine Entdeckung und seine wichtigsten Modifikationen durch die industrielle Chemie. In vielen Fällen wird die industrielle Synthese mit der Biosynthese verglichen. Überdies beleuchtet das Buch moderne Aspekte und zukünftige Entwicklungen in der Naturstoffsynthese. Ohne auf jeden industriell hergestellten Naturstoff einzugehen - was angesichts der Fülle der Substanzen in einem Lehrbuch auch gar nicht möglich ist -, bietet das verständlich geschriebene Werk einen guten Überblick über das gesamte Gebiet. Dabei kommt die "grüne Chemie" ebenso zur Sprache wie die Atomökonomie und "Eleganz" in der industriellen Naturstoffsynthese.

Green Solvents I

Properties and Applications in Chemistry

Author: Ali Mohammad,Inamuddin Dr.

Publisher: Springer Science & Business Media

ISBN: 9400717121

Category: Science

Page: 430

View: 1174

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The conventional solvents used in chemical, pharmaceutical, biomedical and separation processes represent a great challenge to green chemistry because of their toxicity and flammability. Since the beginning of “the 12 Principles of Green Chemistry” in 1998, a general effort has been made to replace conventional solvents with environmentally benign substitutes. Water has been the most popular choice so far, followed by ionic liquids, surfactant, supercritical fluids, fluorous solvents, liquid polymers, bio-solvents and switchable solvent systems. Green Solvents Volume I and II provides a throughout overview of the different types of solvents and discusses their extensive applications in fields such as extraction, organic synthesis, biocatalytic processes, production of fine chemicals, removal of hydrogen sulphide, biochemical transformations, composite material, energy storage devices and polymers. These volumes are written by leading international experts and cover all possible aspects of green solvents’ properties and applications available in today’s literature. Green Solvents Volume I and II is an invaluable guide to scientists, R&D industrial specialists, researchers, upper-level undergraduates and graduate students, Ph.D. scholars, college and university professors working in the field of chemistry and biochemistry.

Chemistry and Chemical Technologies in Waste Valorization

Author: Carol Sze Ki Lin

Publisher: Springer

ISBN: 3319906534

Category: Science

Page: 283

View: 9306

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​The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field./div Chapters "Sonocatalysis: A Potential Sustainable Pathway for the Valorization of Lignocellulosic Biomass and Derivatives", "Valorisation of Biowastes for the Production of Green Materials Using Chemical Methods" and "Green and Sustainable Separation of Natural Products from Agro-Industrial Waste: Challenges, Potentialities, and Perspectives on Emerging Approaches" are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

Natural Products Isolation

Separation Methods for Antimicrobials, Antivirals and Enzyme Inhibitors

Author: G.H. Wagman,R. Cooper

Publisher: Elsevier

ISBN: 9780080858487

Category: Science

Page: 618

View: 5825

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This new book encompasses, in great detail, the most recent progress made in the isolation and separation of natural products. It covers antibiotics, marine and plant-derived substances, enzyme inhibitors and interferons. The most recent separation methodology is described. Although there is a bias toward antibiotics, it was done because this is still the largest natural products area of research. The fourteen chapters are written by experts in their respective fields. The first two chapters are largely devoted to new methodology applied to purification of a variety of compounds. They include an extensive review and new applications of counter-current chromatography and the newly emerging HPLC-photodiode array technology. Chapter 3 provides a review of affinity chromatography applied to the separation of antibiotics for the first time. Next are chapters on antimicrobials with an update on all the most recent &bgr;-lactam (after 1976) discoveries. A comprehensive review of a very important class of antiparasitic agents - the avermectins - follows. An update of isolation and purification of a variety of marine-derived compounds is next. The succeeding chapter is a comprehensive review of the most recent developments in isolation and purification of interferons. This is followed by a discussion of enzyme inhibitors and their isolation and purification and ties in with a chapter on plant-derived natural products, some of which are also in this same category. The final chapter is a futuristic essay indicating the isolation of minute amounts of natural products and the fascinating biological properties which they possess. The book has extensive isolation schemes, tables, figures and chemical structures. In many instances a short summary of the producing organism, brief chemical description and structure and biological activity of the compounds is presented. Detailed information of extraction, separation and purification techniques follow. Each chapter has an extensive bibliography and, where applicable, an appendix showing sources of materials and equipment. A detailed index to the subject matter is included at the end of the book. The book thus offers the reader: up-to-date reviews (including 1988) of specific topics in the natural products field not to be found elsewhere; information on new chromatographic methods and techniques described in sufficient detail to be utilized by investigators in this area of research; and extensive references to enable the serious researcher to pursue particular information. It will appeal to pharmaceutical and natural products researchers and is a valuable acquisition for university chemistry and biochemistry departments.

Green Extraction Techniques: Principles, Advances and Applications

Author: N.A

Publisher: Elsevier

ISBN: 0444638695

Category: Science

Page: 674

View: 576

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Green Extraction Techniques: Principles, Advances and Applications, Volume 76, the first work to compile all the multiple green extraction techniques and applications currently available, provides the most recent analytical advances in the main green extraction techniques. This new release includes a variety of comprehensively presented topics, including chapters on Green Analytical Chemistry: The Role of Green Extraction Techniques, Bioactives Obtained From Plants, Seaweeds, Microalgae and Food By-Products Using Pressurized Liquid Extraction and Supercritical Fluid Extraction, Pressurized Hot Water Extraction of Bioactives, and Pressurized Liquid Extraction of Organic Contaminants in Environmental and Food Samples. In this ongoing serial, in-depth, emerging green extraction approaches are discussed, together with their miniaturization and combination, showing the newest technologies that have been developed in the last few years for each case and providing a picture of the most innovative applications with further insights into future trends. Compiles all the multiple green extraction techniques currently available, along with their applications Includes the most recent analytical advances in the main green extraction techniques, along with their working principles Covers emerging green extraction approaches, their miniaturization and combination and an insight into future trends

Microwave-assisted Extraction for Bioactive Compounds

Theory and Practice

Author: Farid Chemat,Giancarlo Cravotto

Publisher: Springer Science & Business Media

ISBN: 1461448301

Category: Technology & Engineering

Page: 240

View: 8403

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With increasing energy prices and the drive to reduce CO2 emissions, food industries are challenged to find new technologies in order to reduce energy consumption, to meet legal requirements on emissions, product/process safety and control, and for cost reduction and increased quality as well as functionality. Extraction is one of the promising innovation themes that could contribute to sustainable growth in the chemical and food industries. For example, existing extraction technologies have considerable technological and scientific bottlenecks to overcome, such as often requiring up to 50% of investments in a new plant and more than 70% of total process energy used in food, fine chemicals and pharmaceutical industries. These shortcomings have led to the consideration of the use of new "green" techniques in extraction, which typically use less solvent and energy, such as microwave extraction. Extraction under extreme or non-classical conditions is currently a dynamically developing area in applied research and industry. Using microwaves, extraction and distillation can now be completed in minutes instead of hours with high reproducibility, reducing the consumption of solvent, simplifying manipulation and work-up, giving higher purity of the final product, eliminating post-treatment of waste water and consuming only a fraction of the energy normally needed for a conventional extraction method. Several classes of compounds such as essential oils, aromas, anti-oxidants, pigments, colours, fats and oils, carbohydrates, and other bioactive compounds have been extracted efficiently from a variety of matrices (mainly animal tissues, food, and plant materials). The advantages of using microwave energy, which is a non-contact heat source, includes more effective heating, faster energy transfer, reduced thermal gradients, selective heating, reduced equipment size, faster response to process heating control, faster start-up, increased production, and elimination of process steps. This book will present a complete picture of the current knowledge on microwave-assisted extraction (MAE) of bioactive compounds from food and natural products. It will provide the necessary theoretical background and details about extraction by microwaves, including information on the technique, the mechanism, protocols, industrial applications, safety precautions, and environmental impacts.

Alternative Solvents for Green Chemistry

Author: Francesca M. Kerton

Publisher: Royal Society of Chemistry

ISBN: 085404163X

Category: Science

Page: 226

View: 1195

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Conventional solvents can be hazardous in terms of toxicity, flammability and waste generation. Consequently, alternative solvents now form a substantial part of green chemistry. This book covers the latest developments in this growing field as well as some key areas that have been overlooked in previous literature.

Introduction to Natural Products Chemistry

Author: Rensheng Xu,Yang Ye,Weimin Zhao

Publisher: CRC Press

ISBN: 1439860769

Category: Medical

Page: 381

View: 9884

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Natural products chemistry—the chemistry of metabolite products of plants, animals and microorganisms—is involved in the investigation of biological phenomena ranging from drug mechanisms to gametophytes and receptors and drug metabolism in the human body to protein and enzyme chemistry. Introduction to Natural Products Chemistry has collected the most important research results of natural product chemistry in China. It overviews the basic principles of isolation, structure, and characteristics of natural products and illustrates current research techniques of structure elucidation with real-life examples of wet chemistry and spectroscopic analyses (UV, IR, MS, and NMR, especially 2d-NMR, HMBC, and HMQC), bioactivity, biosynthesis, and chemical synthesis. Specifically, this book covers: Extraction and isolation of natural products Chemistry of fungal products Alkaloids, sesquiterpenoids, diterpenes, and saponins Amino acids and peptides Flavonoids, anthraquinones, coumarins, and lignans Marine natural products Structural modification of active principles from traditional Chinese medicine Chemical synthesis of natural products Although natural products chemistry has produced enormous results and made great contributions to human health, industry, and agriculture, only a fraction of natural resources have been rigorously studied. Chinese natural products are a gold mine for further exploration with modern technology and methods. This book represents the continuing collaboration between the fields of natural products chemistry, medicine, biology, and agriculture which will continue to discover and implement novel chemical products from natural sources.

Analytical Techniques for Natural Product Research

Author: Satyanshu Kumar

Publisher: CABI

ISBN: 1780644736

Category: Science

Page: 204

View: 5807

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Plants are important source of lead molecules for drug discovery. These lead molecules serve as starting materials for laboratory synthesis of drug as well a model for production of biologically active compounds. Phytochemical processing of raw plant materials is essentially required to optimize the concentration of known constituents and also to maintain their activities. Extraction techniques and analytical techniques have played critical roles in phytochemical processing of raw materials. Extraction technologies from conventional extraction to green extraction as well as analytical techniques from single technique to hyphenated/coupled techniques most frequently used in phytochemistry laboratories are covered in the book.