Download or read book Dietary Reference Intakes for Vitamin C Vitamin E Selenium and Carotenoids written by Institute of Medicine and published by National Academies Press. This book was released on 2000-08-27 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the newest release in the authoritative series of quantitative estimates of nutrient intakes to be used for planning and assessing diets for healthy people. Dietary Reference Intakes (DRIs) is the newest framework for an expanded approach developed by U.S. and Canadian scientists. This book discusses in detail the role of vitamin C, vitamin E, selenium, and the carotenoids in human physiology and health. For each nutrient the committee presents what is known about how it functions in the human body, which factors may affect how it works, and how the nutrient may be related to chronic disease. Dietary Reference Intakes provides reference intakes, such as Recommended Dietary Allowances (RDAs), for use in planning nutritionally adequate diets for different groups based on age and gender, along with a new reference intake, the Tolerable Upper Intake Level (UL), designed to assist an individual in knowing how much is "too much" of a nutrient.
Download or read book Ascorbic Acid in Plant Growth Development and Stress Tolerance written by Mohammad Anwar Hossain and published by Springer. This book was released on 2018-03-19 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ascorbic acid (AsA), vitamin C, is one of the most abundant water-soluble antioxidant in plants and animals. In plants AsA serves as a major redox buffer and regulates various physiological processes controlling growth, development, and stress tolerance. Recent studies on AsA homeostasis have broadened our understanding of these physiological events. At the mechanistic level, AsA has been shown to participate in numerous metabolic and cell signaling processes, and the dynamic relationship between AsA and reactive oxygen species (ROS) has been well documented. Being a major component of the ascorbate-glutathione (AsA-GSH) cycle, AsA helps to modulate oxidative stress in plants by controlling ROS detoxification alone and in co-operation with glutathione. In contrast to the single pathway responsible for AsA biosynthesis in animals, plants utilize multiple pathways to synthesize AsA, perhaps reflecting the importance of this molecule to plant health. Any fluctuations, increases or decreases, in cellular AsA levels can have profound effects on plant growth and development, as AsA is associated with the regulation of the cell cycle, redox signaling, enzyme function and defense gene expression. Although there has been significant progress made investigating the multiple roles AsA plays in stress tolerance, many aspects of AsA-mediated physiological responses require additional research if AsA metabolism is to be manipulated to enhance stress-tolerance. This book summarizes the roles of AsA that are directly or indirectly involved in the metabolic processes and physiological functions of plants. Key topics include AsA biosynthesis and metabolism, compartmentation and transport, AsA-mediated ROS detoxification, as well as AsA signaling functions in plant growth, development and responses to environmental stresses. The main objective of this volume is therefore to supply comprehensive and up-to-date information for students, scholars and scientists interested in or currently engaged in AsA research.
Download or read book Nutritional Biochemistry of the Vitamins written by David A. Bender and published by Cambridge University Press. This book was released on 2003-09-18 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative and comprehensive review of our current knowledge of the vitamins, their metabolic functions and the scientific basis for setting recommended intakes for the prevention of deficiency and promotion of optimum health. This publication will be a valuable reference for students and specialists alike in the field of nutritional biochemistry.
Download or read book Vitamin C written by Alan B. Clemetson and published by CRC Press. This book was released on 2018-01-10 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The factors affecting blood vitamin C levels are described in detail in this series. Many factors such as aging, smoking, infection, trauma, surgery, hemolysis, hormone administration, heavy metals, pregnancy, alcohol, ionizing radiation and several medicines have been found to cause a disturbance of ascorbic acid metabolism and to reduce blood vitamin C levels. Indeed, abnormalities of ascorbic acid metabolism, due to factors such as smoking, occur much more frequently than does dietary vitamin C deficiency today.It is now known that low blood vitamin C levels are associated with histaminemia (high blood histamine levels), and also that ascorbate-responsive histaminemia is common in apparently healthy people. High blood histamine levels are believed to cause small hemorrhages within the inner walls of the blood vessels and these may lead to the deposition of cholesterol, as an aberrant form of wound healing. Ascorbic acid not only reduces blood histamine levels, but also aids the conversion of cholesterol to bile acids in the liver. The clinical pathological and chemical changes observed in ascorbic acid deficiency are discussed in detail. Several diseases and disorders associated with low blood vitamin C levels are also described. Possible toxic effects resulting from the oxidation of ascorbic acid are noted, and reasons for the use of D-catechin or other chelating fiber to prevent or minimize the release of ascorbate-free radical are detailed. An excellent reference for physicians, nutritionists and other scientists
Download or read book Vitamin C written by S. Nobile and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parents and ancestors are always important: they endow us with a genetic inheritance for better or for worse, for the balanced diet, for overfeeding or for starvation. Some of us die young, some succumb in middle age to chronic disease, others join the gero cracy - the healthy, happy people in their 70s, 80s or even 90s. Genetic inheritance, nurture and nutrition, all play their part. The nurture and nutrition are our own responsibility; we make our choices and live with the consequences. This book is dedicated to the students of nutrition who may be interested in the subject for themselves alone, for their families, for teaching and counselling others and for research and investi gations. We found it necessary to include basic information in order to support some of the statements we make or advice we give; this material appears either in the main body of the text or as footnotes. If the student of nutrition is familiar with the basic con cepts, these sections can be skipped. At the end of the book we have included appendices, with examples of daily menus pro viding adequate vitamin C, an extensive bibliography, a glossary and an index. We have drawn up a food table of the vitamin C content of specific foods and described the point-system which is a ready-reckoner for approximate calculation of the vitamin C content of foods and diets.
Download or read book Vitamin C ascorbic Acid written by J. N. Counsell and published by Elsevier Science & Technology. This book was released on 1981 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A detailed version of 19 papers briefly presented at a 1981 international symposium offers overviews of the marginal relevant literature on various aspects of the role of vitamin C in human nutrition for nutrition and health professionals and vitamin researchers. Topics concerning vitamin C include: its function, metabolism, safe requirements, and recommended allowances; its status in various population groups; its effect on iron bioavailability; its use or presence in breadmaking, meat processing, oil and fat antioxidants, fruit juices, and beverages; its analytical measurement; its effect on nitrosamine formation and cancer states; its role in human immune function; the effect of drugs (especially, aspirin) on its bioavailability; its effects in surgical patients and on lipid metabolism; and its margional deficiency in human health status. Relevant literature references are appended to each of the 19 papers. (wz).
Download or read book Subcellular Biochemistry written by J. Robin Harris and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Volume 25, leading experts present studies on the value of increased ascorbic acid intake and explore its specific contributions to human and animal health.
Download or read book Vitamin C written by Alan B. Clemetson and published by CRC Press. This book was released on 2018-01-10 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The factors affecting blood vitamin C levels are described in detail in this series. Many factors such as aging, smoking, infection, trauma, surgery, hemolysis, hormone administration, heavy metals, pregnancy, alcohol, ionizing radiation and several medicines have been found to cause a disturbance of ascorbic acid metabolism and to reduce blood vitamin C levels. Indeed, abnormalities of ascorbic acid metabolism, due to factors such as smoking, occur much more frequently than does dietary vitamin C deficiency today.It is now known that low blood vitamin C levels are associated with histaminemia (high blood histamine levels), and also that ascorbate-responsive histaminemia is common in apparently healthy people. High blood histamine levels are believed to cause small hemorrhages within the inner walls of the blood vessels and these may lead to the deposition of cholesterol, as an aberrant form of wound healing. Ascorbic acid not only reduces blood histamine levels, but also aids the conversion of cholesterol to bile acids in the liver. The clinical pathological and chemical changes observed in ascorbic acid deficiency are discussed in detail. Several diseases and disorders associated with low blood vitamin C levels are also described. Possible toxic effects resulting from the oxidation of ascorbic acid are noted, and reasons for the use of D-catechin or other chelating fiber to prevent or minimize the release of ascorbate-free radical are detailed. An excellent reference for physicians, nutritionists and other scientists
Download or read book Vitamin C written by J. N. Counsell and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxygen Media presents information about vitamin C or ascorbic acid from the "Complete Guide to Pediatric Symptoms, Illness and Medications." The guide lists the brand and generic names of vitamin C, which is used to treat and prevent scurvy and other vitamin C deficiencies. The vitamin is also used in the treatment of anemia and the maintenance of acid urine. The resource discusses dosage, side effects, and possible interactions of the drug.
Download or read book Vitamin C written by Alan B. Clemetson and published by CRC Press. This book was released on 2018-01-10 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The factors affecting blood vitamin C levels are described in detail in this series. Many factors such as aging, smoking, infection, trauma, surgery, hemolysis, hormone administration, heavy metals, pregnancy, alcohol, ionizing radiation and several medicines have been found to cause a disturbance of ascorbic acid metabolism and to reduce blood vitamin C levels. Indeed, abnormalities of ascorbic acid metabolism, due to factors such as smoking, occur much more frequently than does dietary vitamin C deficiency today.It is now known that low blood vitamin C levels are associated with histaminemia (high blood histamine levels), and also that ascorbate-responsive histaminemia is common in apparently healthy people. High blood histamine levels are believed to cause small hemorrhages within the inner walls of the blood vessels and these may lead to the deposition of cholesterol, as an aberrant form of wound healing. Ascorbic acid not only reduces blood histamine levels, but also aids the conversion of cholesterol to bile acids in the liver. The clinical pathological and chemical changes observed in ascorbic acid deficiency are discussed in detail. Several diseases and disorders associated with low blood vitamin C levels are also described. Possible toxic effects resulting from the oxidation of ascorbic acid are noted, and reasons for the use of D-catechin or other chelating fiber to prevent or minimize the release of ascorbate-free radical are detailed. An excellent reference for physicians, nutritionists and other scientists
Download or read book Ascorbic Acid in Plants written by Yuyang Zhang and published by Springer Science & Business Media. This book was released on 2012-08-04 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ascorbate acid (AsA) is an important antioxidant in plants, playing important roles in various physiological processes. Humans have lost the ability to synthesize AsA because of the lack of L-gulono-1,4-lactone oxidoreductase, and thus have to absorb ascorbate from diet including fresh fruits and vegetables, as they are the major sources of ascorbate. Several pathways for AsA biosynthesis and metabolism have been identified in plants since 1998. More attention has been paid to improving ascorbate content in plants especially in fruits and vegetables. Significant progresses have been made on key enzymes and genes involved in the AsA biosynthesis and metabolism. Recently, more interests have arised in the regulation of AsA biosynthesis, as it is constantly regulated by the plant development and the environmental factors, e.g. light. Ascorbic acid is also frequently reported to affect plant growth and development e.g. flowering time and fruit ripening. The scope of the book is to cover the biological role, biosynthesis and metabolism, regulation, and metabolic modification of ascorbate in plants.
Download or read book The History of Scurvy and Vitamin C written by Kenneth J. Carpenter and published by Cambridge University Press. This book was released on 1988-04-29 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a survey of the fascinating history of the various ideas and theories causing scurvy.
Download or read book Ascorbic Acid In Aquatic Organisms written by Konrad Dabrowski and published by CRC Press. This book was released on 2000-12-20 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are just beginning to discover the importance of vitamin C in the health of natural and man-made ecosystems. Synthesis of ascorbic acid is well understood, but algae as the only source of ascorbate in the aquatic food pyramid has not been explored. There is an expanding field of the culture of aquatic organisms that demand formulated feeds to be
Download or read book Vitamin C written by Han Asard and published by Taylor & Francis. This book was released on 2004-08-02 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vitamin C (ascorbic acid) is a key vitamin to animals and plants. This book looks at all aspects of vitamin C; its chemical and biochemical properties, its role in various plants and animals and its effect on our health. Written by an international team of experts, together they represent much of the expertise on vitamin C throughout the world.
Download or read book Vitamin C Current Concepts in Human Physiology written by Anitra C. Carr and published by MDPI. This book was released on 2018-11-05 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Vitamin C: Current Concepts in Human Physiology" that was published in Antioxidants
Download or read book Vitamin C and Human Health written by Anitra C. Carr and published by MDPI. This book was released on 2018-10-09 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Printed Edition of the Special Issue Published in Nutrients
Download or read book Vitamin C written by Rodolfo Paoletti and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vitamin C, or ascorbic acid, has a long and multifaceted scientific history. In 1937, the Nobel Prize for Physiology and Medicine was awarded to Albert Szent-Gyorgyi'in recognition of his discoveries concerning the biological oxida tion processes with special reference to vitamin C', and the Nobel Prize for Chemistry was shared by Sir Norman W. Haworth, who was the first to synthesize the vitamin. Vitamin C is a potent antioxidant, and this action represented the theoretical basis for various lines of investigation on this molecule in which the potential role of ascorbic acid in the prevention and treatment of a series of dis eases, whose pathogenesis is linked to an excess of free radicals such as athero sclerosis and cancer, have been examined. These data have been analyzed in detail by experts in biochemistry, epidemi ology, and preventive and clinical medicine in the International Symposium Vitamin C, the state of the art in disease prevention sixty years after the Nobel Prize, held in Monte Carlo from October 31 to November 1, 1997, under the aus pices and the scientific endorsement of the Nutrition Foundation of Italy and with the financial support of Bracco SpA and Merck.
