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Targeted Extraction Of Select Natural Products Using Supercritical Carbon Dioxide
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Book Synopsis Targeted Extraction of Select Natural Products Using Supercritical Carbon Dioxide by : Kari Kramp
Download or read book Targeted Extraction of Select Natural Products Using Supercritical Carbon Dioxide written by Kari Kramp and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis examined the supercritical carbon dioxide (CO2) extraction (SFE) of targeted secondary metabolites from selected natural products. Phytochemical characterization and determination of biological efficacy was completed using advanced analytical methods and in-vivo bio-assays. More than 500 SFE extracts were generated and characterized. Sample preparation (particle size, moisture content) and extraction parameters (pressure, temperature and flow rate) were investigated and the ability of SFE to extract specific biosynthetic classes of compounds was evaluated. Where warranted, pilot scale studies were conducted for larger scale biological trials. SFE of the neotropical vine, Souroubea sympetala, a traditional medicine used for a culture bound syndrome related to anxiety, resulted in an extract rich in betulinic acid (5.54 +/- 0.24 mg/g) determined by HPLC-APCI/MS. When subjected to validated rodent anxiety behavioral assays (e.g. elevated plus maze (EPM)) the SFE extract demonstrated significant anxiolysis (anti-anxiety) compared to the vehicle control, with a 50% increase in time spent in open arms and a 73% increase in unprotected head dips observed. The significant in-vivo anxiolysis observed provides scientific support for the ethnobotanical use of this traditional medicine and a promising lead for a natural health product (NHP) to treat anxiety. Systematic variation of SFE parameters (pressure and temperature) on pyrethrum (Chrysanthemum cinerariifolium) oleoresin, a natural insecticide, resulted in a residue free pyrethrin concentrate, suitable for organic agricultural applications. The highest pyrethrin concentration (0.531 g/g) and highest ratio of pyrethrins I (pyrethrin I, cinerin I, jasmolin I) to pyrethrins II (pyrethrin II, cinerin II, jasmolin I) (PI:PII = 1.95) was obtained at 40 °C; 10 MPa while 40°C; 30 MPa produced the lowest pyrethrin concentration (0.436 g/g) and lowest ratio of PI:PII (1.87). Total pyrethrin recovery was highest at 40°C; 30 MPa (8.39 g pyrethrins) vs. 40°C; 10 MPa (6.96 g pyrethrins). The insecticidal activity of the SFE extracts of the pyrethrum oleoresin was confirmed (>70% mortality at 48 h) using the Colorado potato beetle (CPB) a major pest of agriculture. SFE of piperamides from black pepper (Piper nigrum), a promising botanical insecticide and synergist, was successful at pressures above 30 MPa and temperatures greater than 50C with total yields greater than 7.87% (CV
Book Synopsis Targeted Extraction of Select Natural Products Using Supercritical Carbon Dioxide by : Kari Kramp
Download or read book Targeted Extraction of Select Natural Products Using Supercritical Carbon Dioxide written by Kari Kramp and published by . This book was released on 2010 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Bioactive Compounds by : Rajeshwar P. Sinha
Download or read book Natural Bioactive Compounds written by Rajeshwar P. Sinha and published by Academic Press. This book was released on 2020-10-06 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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)
Book Synopsis Extraction of Natural Products Using Near-Critical Solvents by : M.B. King
Download or read book Extraction of Natural Products Using Near-Critical Solvents written by M.B. King and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Green Extraction of Natural Products by : Farid Chemat
Download or read book Green Extraction of Natural Products written by Farid Chemat and published by John Wiley & Sons. This book was released on 2016-03-11 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Natural Extracts Using Supercritical Carbon Dioxide by : Mamata Mukhopadhyay
Download or read book Natural Extracts Using Supercritical Carbon Dioxide written by Mamata Mukhopadhyay and published by CRC Press. This book was released on 2000-06-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 development in the technology and its applications to the food, flavor, fragrance, and pharmaceutical industries. It outlines the many advantages the 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.
Book Synopsis Supercritical Carbon Dioxide by : Evie P. Hayden
Download or read book Supercritical Carbon Dioxide written by Evie P. Hayden and published by . This book was released on 2020-02-14 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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"--
Book Synopsis Feasibilities and Limitations of Carbon Dioxide Supercritical Fluid Extraction in the Extraction of Natural Products by : Marsin Sanagi M.
Download or read book Feasibilities and Limitations of Carbon Dioxide Supercritical Fluid Extraction in the Extraction of Natural Products written by Marsin Sanagi M. and published by . This book was released on 1993 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Supercritical Fluid Extraction of Nutraceuticals and Bioactive Compounds by : Jose L. Martinez
Download or read book Supercritical Fluid Extraction of Nutraceuticals and Bioactive Compounds written by Jose L. Martinez and published by CRC Press. This book was released on 2007-11-28 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Supercritical Fluid Extraction and Pretreatment Processes for Natural Products Using Carbon Dioxide by : Kyoung-Heon Kim
Download or read book Supercritical Fluid Extraction and Pretreatment Processes for Natural Products Using Carbon Dioxide written by Kyoung-Heon Kim and published by . This book was released on 1998 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Maria D. Luque de Castro Publisher :Springer Science & Business Media ISBN 13 :3642786731 Total Pages :332 pages Book Rating :4.6/5 (427 download)
Book Synopsis Analytical Supercritical Fluid Extraction by : Maria D. Luque de Castro
Download or read book Analytical Supercritical Fluid Extraction written by Maria D. Luque de Castro and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in analytical chemistry have turned it into a virtually unrecognizable science compared to a few decades ago, when it lagged behind other sciences and techniques. However, advances in analytical science have been far from universal: while innovations in instrumentation and data acquisition and processing systems have reached unprecedented levels thanks to parallel breakthroughs in computer science and chemo metrics, progress in preliminary operations has been much slower despite their importance to analytical results. Thus, such clear trends in analytical process development as automation and miniaturization have not reached preliminary operations to the same extent, even though this area is pro bably in the greatest need. Improvement in preliminary operations is thus an urgent goal of analytical chemistry on the verge of the twenty first century. Increased R&D endeavours and manufacture of commercially available automatic equipment for implementation of the wide variety of operations that separate the uncollected, unmeasured, untreated sample from the signal measuring step are thus crucial on account of the wide variability of such operations, which precludes development of all-purpose equipment, and the complexity of some, particularly relating to solid samples. Supercritical fluid extraction opens up interesting prospects in this context and is no doubt an effective approach to automatioI1 and mini aturization in the preliminary steps of the analytical process. The dramatic developments achieved in its short life are atypical in many respects.
Book Synopsis The Properties of Gases and Liquids 5E by : Bruce E. Poling
Download or read book The Properties of Gases and Liquids 5E written by Bruce E. Poling and published by McGraw Hill Professional. This book was released on 2000-11-27 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Valorization of Agri-Food Wastes and By-Products by : Rajeev Bhat
Download or read book Valorization of Agri-Food Wastes and By-Products written by Rajeev Bhat and published by Academic Press. This book was released on 2021-08-25 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valorization of Agri-Food Wastes and By-Products: Recent Trends, Innovations and Sustainability Challenges addresses the waste and by-product valorization of fruits and vegetables, beverages, nuts and seeds, dairy and seafood. The book focuses its coverage on bioactive recovery, health benefits, biofuel production and environment issues, as well as recent technological developments surrounding state of the art of food waste management and innovation. The book also presents tools for value chain analysis and explores future sustainability challenges. In addition, the book offers theoretical and experimental information used to investigate different aspects of the valorization of agri-food wastes and by-products. Valorization of Agri-Food Wastes and By-Products: Recent Trends, Innovations and Sustainability Challenges will be a great resource for food researchers, including those working in food loss or waste, agricultural processing, and engineering, food scientists, technologists, agricultural engineers, and students and professionals working on sustainable food production and effective management of food loss, wastes and by-products. Covers recent trends, innovations, and sustainability challenges related to food wastes and by-products valorization Explores various recovery processes, the functionality of targeted bioactive compounds, and green processing technologies Presents emerging technologies for the valorization of agri-food wastes and by-products Highlights potential industrial applications of food wastes and by-products to support circular economy concepts
Book Synopsis Natural Product Extraction by : Mauricio A Rostagno
Download or read book Natural Product Extraction written by Mauricio A Rostagno and published by Royal Society of Chemistry. This book was released on 2015-10-09 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural products are sought after by the food, pharmaceutical and cosmetics industries, and research continues into their potential for new applications. Extraction of natural products in an economic and environmentally-friendly way is of high importance to all industries involved. This book presents a holistic and in-depth view of the techniques available for extracting natural products, with modern and more environmentally-benign methods, such as ultrasound and supercritical fluids discussed alongside conventional methods. Examples and case studies are presented, along with the decision-making process needed to determine the most appropriate method. Where appropriate, scale-up and process integration is discussed. Relevant to researchers in academia and industry, and students aiming for either career path, Natural Product Extraction presents a handy digest of the current trends and latest developments in the field with concepts of Green Chemistry in mind.
Book Synopsis Natural Product Extraction 2nd edn by : Mauricio A. Rostagno
Download or read book Natural Product Extraction 2nd edn written by Mauricio A. Rostagno and published by Royal Society of Chemistry. This book was released on 2022-07-20 with total page 757 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Product Extraction presents an updated review of the more environmentally benign techniques available for the extraction of natural products.
Book Synopsis Fundamentals and Applications of Supercritical Carbon Dioxide (SCO2) Based Power Cycles by : Klaus Brun
Download or read book Fundamentals and Applications of Supercritical Carbon Dioxide (SCO2) Based Power Cycles written by Klaus Brun and published by Woodhead Publishing. This book was released on 2017-01-09 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals and Applications of Supercritical Carbon Dioxide (SCO2) Based Power Cycles aims to provide engineers and researchers with an authoritative overview of research and technology in this area. Part One introduces the technology and reviews the properties of SCO2 relevant to power cycles. Other sections of the book address components for SCO2 power cycles, such as turbomachinery expanders, compressors, recuperators, and design challenges, such as the need for high-temperature materials. Chapters on key applications, including waste heat, nuclear power, fossil energy, geothermal and concentrated solar power are also included. The final section addresses major international research programs. Readers will learn about the attractive features of SC02 power cycles, which include a lower capital cost potential than the traditional cycle, and the compounding performance benefits from a more efficient thermodynamic cycle on balance of plant requirements, fuel use, and emissions. Represents the first book to focus exclusively on SC02 power cycles Contains detailed coverage of cycle fundamentals, key components, and design challenges Addresses the wide range of applications of SC02 power cycles, from more efficient electricity generation, to ship propulsion
Book Synopsis Sample Preparation in Chromatography by : S.C. Moldoveanu
Download or read book Sample Preparation in Chromatography written by S.C. Moldoveanu and published by Elsevier. This book was released on 2002-05-08 with total page 949 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sample preparation is an essential step in many analyses. This book approaches the topic of sample preparation in chromatography in a methodical way, viewing it as a logical connection between sample collection and analytical chromatography. Providing a guide for choosing the appropriate sample preparation for a given analysis, this book describes various ways to process the sample, explaining the principle, discussing the advantages and disadvantages, describing the applicability to different types of samples, and showing the fitness to specific chromatographic determinations. The first part of the book contains an overview of sample preparation showing its relation to sample collection and to the core chromatographic analysis. The second part covers procedures that do not use chemical modifications of the analyte and includes methods for sample dissolution, concentration and cleanup designed mainly for modifying the initial matrix of the sample. This part starts with conventional separations such as filtration and distillation and finishes with more advanced techniques such as solid phase extraction and electroseparations. The third part gives a description of the chemical modifications that can be performed on a sample either for fractionation purposes or to improve a specific property of the analyte. This part includes derivatizations, polymer chemical degradations, and pyrolysis.
