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| Author | : M.B. King |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 335 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9401121389 |
Download Extraction of Natural Products Using Near-Critical Solvents Book in PDF, ePub and Kindle
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.
| Author | : Mamata Mukhopadhyay |
| Publisher | : CRC Press |
| Total Pages | : 362 |
| Release | : 2000-06-27 |
| Genre | : Medical |
| ISBN | : 142004169X |
Download Natural Extracts Using Supercritical Carbon Dioxide Book in PDF, ePub and Kindle
Synthesizing research from a wide variety of sources, this work offers a convenient guide to a clean, safe, inexpensive, non-toxic, non-polluting solvent that performs better than most conventional solvents. Natural Extracts Using Supercritical Carbon Dioxide reviews recent developments in the technology and its applications to the food, flavor, fragrance, and pharmaceutical industries. It outlines the many advantages that this method has over traditional methods like steam distillation, solvent extraction, and molecular distillation, and it supports the popular trend toward the use of natural products in these industries.
| Author | : Rajeshwar P. Sinha |
| Publisher | : Academic Press |
| Total Pages | : 502 |
| Release | : 2020-10-06 |
| Genre | : Science |
| ISBN | : 0128206594 |
Download Natural Bioactive Compounds Book in PDF, ePub and Kindle
Natural Bioactive Compounds: Technological Advancements deals with the latest breakthroughs in the field of screening, characterization and novel applications of natural bioactive compounds from diverse group of organisms ranging from bacteria, viruses, cyanobacteria, algae, fungi, bryophytes, higher plants, sponges, corals and fishes. Written by some of the most reputed scientists in the field, this book introduces the reader to strategies and methods in the search for bioactive natural products. It is an essential read for researchers and students interested in bioactive natural products, their biological and pharmacological properties, their possible use as chemopreventive or chemotherapeutic agents, and other future potential applications. Explores natural sources of bioactive compounds, including cyanobacteria, bacteria, viruses, fungi and higher plants Discusses the potential applications of biological products, such as their use in medicine (antibiotics, cancer research, immunology), as food additives, supplements and technological substances Analyzes the contributions of emerging or developing technologies for the study of bioactive natural compounds (characterization and purification)
| Author | : Mohd. Marsin Sanagi (supervisor.) |
| Publisher | : |
| Total Pages | : |
| Release | : 1993 |
| Genre | : Extraction (Chemistry) |
| ISBN | : |
Download Carbon Dioxide Supercritical Fluid Extraction of Natural Products Book in PDF, ePub and Kindle
| Author | : Evie P. Hayden |
| Publisher | : |
| Total Pages | : 226 |
| Release | : 2020-02-14 |
| Genre | : Science |
| ISBN | : 9781536174151 |
Download Supercritical Carbon Dioxide Book in PDF, ePub and Kindle
"Supercritical Carbon Dioxide: Functions and Applications presents a constructive overview on the use of supercritical carbon dioxide as an alternative solvent to obtain natural products, instead of using conventional organic solvents. The overview includes the fundamentals, industrial applications, and main experimental findings based on recent studies about supercritical extraction using carbon dioxide. Next, the impregnation of polymer materials with two different ketones with known activity against the main pests of stored products (thymoquinone and R-( )-pulegone) is presented, and the effect of the process variables on ketone loading and the final activity of the impregnated materials is discussed. The authors go on to evaluate the effect of temperature (T: 41-69°C) and CO2 density (D: 843-957 kg/m3) on the extraction yield of oil and bioactive compounds of N. gaditana using supercritical CO2, a technology that allows for the selective extraction of compounds of interest by varying the pressure and temperature conditions, producing natural extracts without the use of liquid organic solvents. Hydrophobic modifying coatings on textile materials made of polyethylene terephthalate were obtained by precipitating a low molecular weight fraction of ultrafine polytetrafluoroethylene. The modifier application conditions are also defined. The closing chapter provides an overview on the principal applications related to the supercritical fluid extraction of active compounds from tobacco and tobacco waste, emphasizing the influence of the most important processing parameters on the extraction yield"--
| Author | : Farid Chemat |
| Publisher | : John Wiley & Sons |
| Total Pages | : 384 |
| Release | : 2016-03-11 |
| Genre | : Science |
| ISBN | : 3527676813 |
Download Green Extraction of Natural Products Book in PDF, ePub and Kindle
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.
| Author | : Marsin Sanagi M. |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 1993 |
| Genre | : |
| ISBN | : |
Download Feasibilities and Limitations of Carbon Dioxide Supercritical Fluid Extraction in the Extraction of Natural Products Book in PDF, ePub and Kindle
Supercritical fluid extraction (SFE) offers fast and easy separation of the solvent from the extracts and coupled with the ease of fractionation of the components makes it a potentially powerful alternative to conventional liquid extraction methods. This paper describes recent works on the use of SFE in the extraction of natural products. Studies of SFE carried out in our laboratories have been focused on the extraction of compounds from the rhizomes of selected species of the Zingiberaceae family including Zingiber offcinale, Curcuma longa Linne, Alpinia galanga, and Zingiber zerumbet Smith.
| Author | : Mark McHugh |
| Publisher | : Elsevier |
| Total Pages | : 523 |
| Release | : 2013-10-22 |
| Genre | : Technology & Engineering |
| ISBN | : 0080518176 |
Download Supercritical Fluid Extraction Book in PDF, ePub and Kindle
Supercritical Fluid Extraction is a technique in which CO2 is used under extremely high pressure to separate solution (e.g., removing caffeine from coffee). Separations is basic to all process industries and supercritical fluid extraction is a specific type which is receiving a high level of attention. The book will combine basic fundamentals with industrial applications. The second edition has been expanded and updated and includes new chapters on chromatography and food processing. "...this is an excellent book which is both instructive and amusing to read. Its true value is neatly summarised in one of the closing sentences: 'We have supplied you with the guidelines and criteria which you can now apply when considering supercritical fluids for your own needs.'' - Chemistry in Britain, February 1995
| Author | : Jose L. Martinez |
| Publisher | : CRC Press |
| Total Pages | : 424 |
| Release | : 2007-11-28 |
| Genre | : Science |
| ISBN | : 1420006517 |
Download Supercritical Fluid Extraction of Nutraceuticals and Bioactive Compounds Book in PDF, ePub and Kindle
Enhanced concern for the quality and safety of food products, increased preference for natural products, and stricter regulations on the residual level of solvents, all contribute to the growing use of supercritical fluid technology as a primary alternative for the extraction, fractionation, and isolation of active ingredients. As a solvent-free p
| Author | : Bruce E. Poling |
| Publisher | : McGraw Hill Professional |
| Total Pages | : 802 |
| Release | : 2000-11-27 |
| Genre | : Technology & Engineering |
| ISBN | : 0071499997 |
Download The Properties of Gases and Liquids 5E Book in PDF, ePub and Kindle
Must-have reference for processes involving liquids, gases, and mixtures Reap the time-saving, mistake-avoiding benefits enjoyed by thousands of chemical and process design engineers, research scientists, and educators. Properties of Gases and Liquids, Fifth Edition, is an all-inclusive, critical survey of the most reliable estimating methods in use today --now completely rewritten and reorganized by Bruce Poling, John Prausnitz, and John O’Connell to reflect every late-breaking development. You get on-the-spot information for estimating both physical and thermodynamic properties in the absence of experimental data with this property data bank of 600+ compound constants. Bridge the gap between theory and practice with this trusted, irreplaceable, and expert-authored expert guide -- the only book that includes a critical analysis of existing methods as well as hands-on practical recommendations. Areas covered include pure component constants; thermodynamic properties of ideal gases, pure components and mixtures; pressure-volume-temperature relationships; vapor pressures and enthalpies of vaporization of pure fluids; fluid phase equilibria in multicomponent systems; viscosity; thermal conductivity;diffusion coefficients; and surface tension.
