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Long-chain polyunsaturated fatty acids (PUFAs) of the omega-3 family, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are physiologically important for many animals and humans. Moreover, fatty acids play an important roles in numerous contexts reflecting various levels: from their producers in natural ecosystems, microalgae, through to invertebrates and fish, and to culinary treatments of fish products for human consumption. Environmental threats such as anthropogenic pollution and its effects on PUFA yield in aquatic ecosystems as well as their transfer to terrestrial ecosystems are highlighted. Assumptions and challenges that are important for the study of PUFA in trophic webs of aquatic ecosystems as well as in human nutrition are discussed.
Over the last several years developing human research suggests that a component of omega-3 fatty acids, long chain ones, contribute particularly to health benefits. Omega-6/3 Fatty Acids: Functions, Sustainability Strategies and Perspectives focuses on developing information on this newly recognized key component. This volume uniquely, and for the first time, focuses on sustainability of natural sources of omega-3 fatty acids variants including long chain ones, and on ways to increase their use and availability to reduce major diseases. The authors review cardiovascular disease, neurological changes and mental health and other diseases like diabetes where long chain omega-3 fatty acids play protective roles from recent human trials. Each chapter evaluates developing information on the possible mechanistic role of long chain omega-3 fatty acids. After showing their requirement and involvement in health promotion there are reviews of various sources and ways to protect and promote them. Authors provide support for the benefits and sources of long chain omega-3 fatty acids and their increased dietary intake that reduce various physical and mental illnesses. Omega-6/3 Fatty Acids: Functions, Sustainability and Perspectives is a unique and important new volume that provides the latest data and reviews to physicians who need to assess serum omega-6/3 and fatty acids to help diagnose risks and change diets and to inform industry and the scientific community with reviews of research for actions including new studies and therapies.
The FAO and the WHO have been assigned the task to provide science-based guidance on food and nutrition to national governments and the international community. Regularly hosting expert meetings to review available scientific evidence, they translate this newly gained knowledge into the definitions of requirements, nutritional requirement values and corresponding nutrient-based recommendations. Due to major developments since the last expert meeting on Fats and Fatty Acids in 1993, an update of the 1996 publication and recommendations was urgently needed: today we have a better understanding of how particular fatty acids are metabolized in the body, how they control gene transcription and expression, and how they interact with each other. Fats and fatty acids are now considered key nutrients affecting both early growth and development, as well as nutrition-related chronic diseases later in life. This publication contains the background papers which have been prepared by a panel of carefully selected experts and have served as the basis for the updated dietary recommendations of FAO and WHO. They provide an excellent overview of recent developments in the field of fats and fatty acids and offer a wealth of information for nutritionists and other the clinicians.
Basado en el 28 Seminario Néstle Nutrition celebrado en Mexico, 27-30 de noviembre de 1990.
Essential fatty acids are fatty acids that humans must ingest because the body requires them for good health, but it cannot synthesize itself. Therefore, such nutrients need to be supplied from either diet or dietary supplements. Recent studies raised scientific and medical interest in the beneficial effects of these fatty acids on brain and retina function, as well as reducing ill health effects, such as cardio-metabolic diseases. Thus, there is an interest in developing requirements and dietary recommendations. Essential Fatty Acids: Sources, Processing Effects, and Health Benefits provides a systematic introduction and comprehensive information about the essentiality of diets rich in omega fatty acids for successful human growth, development and disease prevention. This book presents detailed knowledge about essential fatty acids, their different food sources, biochemistry, and metabolism. It provides a comprehensive assessment of current knowledge about the effects of various processing and storage conditions on essential fatty acids, their bioavailability and supplementation in foods and diet. Chapters highlight the contribution of essential fatty acids in prevention and improvement of various conditions such as heart problems, arthritis, cancer, brain and bone health, especially in developing fetuses and children. Key Features: Presents comprehensive information on nutritional and health aspects of fats and essential fatty acids Contains a wealth of information on the structure, sources, biochemistry and nutritional properties of essential fatty acids Provides the latest information about the changes in essential fatty acids during various processing and storage conditions Highlights the bioavailability, supplementation and dietary requirements of these fatty acids By bringing together diverse areas of biochemistry, storage, as well as processing behavior and dietary requirements, this book lays the groundwork for striking expansion in our understanding of these important biochemicals and their role in health and disease prevention. Essential Fatty Acids will be of interest to a large and varied audience of researchers in academia, industry, nutrition, dietetics, food science, agriculture, and regulators.
Evidence now suggests that the roles of essential fatty acids as growth promoters and as indices of health and nutrition are fundamentally similar in freshwater and marine ecosystems. Lipids in Aquatic Ecosystems integrates this divergent literature into a coordinated, digestible form. Chapters are organized so as to discuss and synthesize the flow of lipids from lower to higher trophic levels, up to and including humans. Linkages between the production, distribution and pathways of these essential compounds within the various levels of the aquatic food webs, and their ultimate uptake by humans and other terrestrial organisms, are highlighted throughout the book. This book will be of interest to researchers and resource managers working with aquatic ecosystems.
Over the past several years, extensive research has been done on the microbial production of polyunsaturated fatty acids (PUFA). Regardless, research on the oleaginous microalgae used as feedstock for biofuels production and the overall story about the production of nutraceutical fatty acids from oleaginous microalgae has been very limited. This volume provides an exclusive insight on the production of nutraceutical fatty acids from oleaginous microalgae and their role on human health. Some saturated and monounsaturated fatty acids can be synthesized by humans, whereas long-chain polyunsaturated fatty acids (PUFAs) such as α-linolenic acid and linoleic acid cannot and are deemed essential. The products of these acids, such as DHA, which is important for early visual and neurological development, are extremely important to human health. Replacing SFAs with omega-3 and omega-6 fatty acids in the diet reduce the risk of cardiovascular diseases and prevent Alzheimer's, bipolar disorder, and schizophrenia, among other benefits. The ever-rising global demand for omega-3 & 6 PUFAs, however, cannot be met solely by fish oil, due to diminishing fish stocks and pollution of marine ecosystems, which has led to increased interest in alternative sustainable sources. Vegetable oils from genetically engineered plant oilseeds and microorganisms are two potential alternatives to fish oil, even though omega-3 PUFAs are highest in the latter. Although transgenic plants present numerous advantages, their production is dependent on seasonal and climatic conditions and the availability of arable land. Moreover, there are public concerns regarding the cultivation of transgenic crops in open ecosystems. These, together with regulatory issues restrict the large-scale production of genetically modified crops. Microorganisms, however, are known natural producers of microbial oils similar to those obtained from plants and animals and a possible source of nutritionally important omega-3 & 6 PUFAs. This groundbreaking volume presents invaluable new research on essential fatty acids, their production from various oleaginous microorganisms, biochemical and metabolic engineering to improve PUFAs content in oil, extraction and purification of omega 3 fatty acids, and the current market scenario. Whether a veteran engineer or scientist using it as a reference or a professor using it as a textbook, this outstanding new volume is a must-have for any engineer or scientist working in food science.
Presents the State-of-the-Art in Fat Taste TransductionA bite of cheese, a few potato chips, a delectable piece of bacon - a small taste of high-fat foods often draws you back for more. But why are fatty foods so appealing? Why do we crave them? Fat Detection: Taste, Texture, and Post Ingestive Effects covers the many factors responsible for the se