Process Factors Affecting the Separation of Omega-3 Fatty Acids from Marine Lipid Mixtures by Supercritical Fluid Extraction PDF Download
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Author: James Alan Daniels
Publisher:
ISBN:
Category : Fish oils
Languages : en
Pages : 740
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Book Description
Author: James Alan Daniels
Publisher:
ISBN:
Category : Fish oils
Languages : en
Pages : 740
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Book Description
Author: Nuria Rubio Rodr Guez
Publisher: LAP Lambert Academic Publishing
ISBN: 9783847343905
Category :
Languages : en
Pages : 472
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Book Description
Since the first epidemiological studies, carried out in the '80s, established the protective effect of fish oil against cardiovascular diseases, the interest for fish oil and omega-3 fatty acids has been highly increased as well as the demand of omega-3 enriched products and nutraceuticals. As consequence, the searching of new omega-3 natural sources, the design of competitive fish oil and omega-3 production processes and the development of different strategies for omega-3 incorporation in food products have become important fields of research all over the world. In the last years, the valorisation of fish by-products as a source of omega-3 rich oil has been considered an outstanding strategy to reduce the waste generation and increase the competitiveness in the fish industry. On the other hand, the development of green technologies based on the use of supercritical carbon dioxide has acquired an enormous interest to produce high value compounds such as omega-3 in a eco-friendly way. This book presents an application of supercritical fluids in extraction, concentration and formulation of omega-3 rich oil using fish by-products as a raw material.
Author: André B. de Haan
Publisher:
ISBN: 9789037000504
Category : Hydrocarbons
Languages : en
Pages : 148
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 796
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Book Description
Author: H Breivik
Publisher: Oily Press
ISBN: 9780955251214
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Unlike the many other books on omega-3 fatty acids, Long-Chain Omega-3 Specialty Oils is not concerned with nutrition but instead is aimed primarily at those people working to develop, manufacture and market long-chain omega-3 oils and the food, drink and pharmaceutical products containing them. It concentrates on the long-chain acids (C20 chain length and above), rather than alpha-linolenic acid. Although often thought of as 'fish oils', these omega-3 oils are also available from microbial fermentation and from other marine organisms such as krill. Furthermore, there is increasing interest in the development of higher plants with the ability to synthesise long-chain omega-3 fatty acids, with the ultimate objective of creating crop plants yielding oils containing EPA and DHA. Long-Chain Omega-3 Specialty Oils starts with an overview of omega-3 fatty acids, including a discussion of how they are formed in plants and animals, the physiological and medical effects of omega-3 acids, and the importance of chain length. This is followed by chapters discussing the wide variety of fish oil sources, as well as oils from fermentation of single-cell organisms. Separate chapters give information on state-of-the-art processing of fish oils, methods for making concentrates of omega-3 acids, and enzymatic processing and concentration strategies. The next two chapters cover the stabilization and utilization of omega-3 oils for various applications, followed by a chapter dealing with the challenging aspects of analysis of omega-3 acids and their decomposition products. The next chapter is dedicated to regulatory issues, and the final chapter gives an up-to-date survey of the various markets for long-chain omega-3 acids.
Author: Rajeshwar P. Sinha
Publisher: Academic Press
ISBN: 0128206594
Category : Science
Languages : en
Pages : 504
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Book Description
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: Ingibjörg Harðardóttir
Publisher:
ISBN:
Category : Extraction (Chemistry)
Languages : en
Pages : 372
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Book Description
Author: Ibraheem Adetunji Adeoti
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The fish processing industry generates a significant amount of fish byproducts that could either be an important source of energy, food, or industrial feedstock. Fish oils are made up of several lipid classes. These lipids contain long-chain omega-3 polyunsaturated fatty acids; PUFA, (mostly eicosapentaenoic acid (EPA: C20:5 n-3), and docosahexaenoic acid (DHA: C22:6 n-3)) and other lipid classes. The traditional market for the nutritional lipids in the fish oil has been the food industry. However, significant infrastructure for the strict quality control systems is required for food grade oils. Therefore, the process of extracting the high nutritional oils is energy intensive. Further, the location and infrastructure limit the feasibility due to processing requirement, storage and/or transportation issue. For biofuel implementation, the processes to extract and refine fish oil are less energy intensive than the processes for nutritional quality oils and do not require the stringent product specifications and approval process as in the food and pharmaceutical industry. There have been significant advances in developing inexpensive and robust methods for fuel extraction and upgrading processes. Supercritical fluid extraction process using carbon dioxide (SC-CO2) under moderate conditions is promising for quality fish oil production. This process produces oil with low impurities compared to other processes. The specific research objectives include: (1) Overview and background information on Atlantic Canada fish processing plants (2) Review of (state of art) fish oil extraction processes including physical, chemical and biological processes. (3) Fuel oil characterization of fish oil and fish oil blends with petroleum distillate. This section evaluates thermal stability, rheological, and heating values, of crude fish oil and blend with heavy petroleum distillate. (4) Solubility determination of fish oil in SC-CO2; the SFE extraction process (optimize the SFE process conditions to maximize fish oil yield under the least intensive conditions, pressures, temperatures and CO2 consumption); and mathematical model to predict oil extraction rate as a function of process conditions. (5) Fuel oil quality evaluation as a function of extraction methods. (6) Life cycle assessment (LCA) of different extraction processes (modified fishmeal process (MFM), SC-CO2, and soxhlet processes) of fish oil from salmon wastes. The environmental burdens and potential impacts by each extraction process were quantified through the LCA. In the characterization phase of this study, the thermal and rheological properties of unrefined salmon oil, bunker fuel oil and their blends have been analyzed. The feasibility of using unblended and/or blends of fish oil in conventional heaters/boilers/engines are determined by these properties. The MFM oils, the bunker fuel oil and their blends behaved as a shear thinning non-Newtonian fluid that can be described by the power-law model. The supercritical carbon dioxide extraction (SC-CO2) was effective at pressures of 15, 25, and 35 MPa, temperatures of 313, 333 and 353 K, and CO2 flow rates of 0.18-0.48 kg/hr. The process is solubility controlled and the yields at 35 MPa, temperatures of 313, 333 and 353 K, and CO2 flow rates of 0.18 kg/hr were approximately 39, 46 and 41 (wt.%). The mathematical model (Goto et al. 1993) using the best fit of theoretical extraction curve correlated the experimental data satisfactorily with average absolute deviation, AAD (%) ranged from 2.4 to 10.6 %. Unlike the MFM oil, the SC-CO2 oil is more viscous homogenous oil which behaved as a Newtonian fluid. Physco-chemical, compositional and thermal characterization indicated SC-CO2 oil contains fewer impurities than the MFM and soxhlet process oils. From the LCA results, the MFM method has the lowest overall environmental impact compared to the soxhlet and SC-CO2 methods. The soxhlet extraction method, due to the use of solvent (hexane), has the greatest impacts on all of the four damage categories (human health, ecosystem quality, climate change and resources). The SC-CO2 requires more energy to produce 1 kg fish oil (2 folds more than the MFM and 3 folds more than the soxhlet methods). However, the SC-CO2 produces higher quality oil than the other two processes and the process impact on the environment is moderate relative to the MFM and soxhlet processes.
Author: Corraldo Galli
Publisher: Springer
ISBN: 9780306432316
Category : Science
Languages : en
Pages : 452
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Book Description
On June 24-26, 1985, a major International Conference on the Hea1th Effects of P01yunsaturated Fatty Acids in Seafoods was held in Washington, D. C. The conference had two objectives: (1) to review the research data on the health effects of polyunsaturated fatty acids in seafoods in terms of the impact of omega-3 fatty acids on eicosanoid formation, thrombosis and inflammation, and the role of docosahexaenoic acid in membrane function and metabolism, and (2) to develop a research agenda to determine the spectrum of the health effects of polyunsaturated fatty acids of seafood origin in the American diet. The 1985 conference established the fact that omega-3 fatty acids of marine origin - eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) - play important roles in prostaglandin metabolism, thrombosis and atherosc1erosis, immunology and inflammation, and membrane function. In response to the conference recommendations, the Congress of the United States provided special funding for the establishment of a "test materials 1aboratory" within the US Department of Commerce to produce under documented quality contr01 the types and quanti ties of omega-3 te~3t materials required by biomedica1 researchers. The forms of test materials to be produced include refined fish oil, polyunsaturated fatty acid enhanced triglycerides, concentrates of esters of fatty acids, purified omega-3 fatty acids, and omega-3 mono-, di- and tri~lyceride mixtures.
Author: D. L. Luthria
Publisher: The American Oil Chemists Society
ISBN: 9781893997783
Category : Health & Fitness
Languages : en
Pages : 300
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Book Description
This book contains papers from the symposium "Critical Issues, Current and Emerging Technologies for Determination of Crude Fat Content in Food, Feed and Seeds," held in 2003 at the AOCS Annual Meeting in Kansas City, Missouri. The topics covered give a broad perspective of the challenges and issues of the value-added enhanced products. This book will be of interest to biotechnology professionals, processors, scientists, nutritionists, economists, new product development and business professionals, official agencies, and others actively engaged in the development and marketing of value-added products.
