Diet and Health

Diet and Health PDF

Author: National Research Council

Publisher: National Academies Press

Published: 1989-01-01

Total Pages: 765

ISBN-13: 0309039940

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Diet and Health examines the many complex issues concerning diet and its role in increasing or decreasing the risk of chronic disease. It proposes dietary recommendations for reducing the risk of the major diseases and causes of death today: atherosclerotic cardiovascular diseases (including heart attack and stroke), cancer, high blood pressure, obesity, osteoporosis, diabetes mellitus, liver disease, and dental caries.

Fatty Acids and Glycerides

Fatty Acids and Glycerides PDF

Author: A. Kuksis

Publisher: Springer

Published: 1978-04-01

Total Pages: 469

ISBN-13: 9780306335815

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The advances in lipid biochemistry over the past 25 to 30 years have been dramatic and exciting. The elucidation of the pathways of fatty acid biosynthesis and oxidation, the delineation of the biogenesis of cholesterol from small-molecular weight precursors, the structure proof of simple and complex lipids from plants, animals, and microorganisms, are excellent examples of the spectacular advances made during the golden era of lipid biochemistry. The multifaceted discoveries in these diverse areas of study could be attributed to development of highly sophisticated column chromatographic techniques for separation and purification of simple and complex lipids. The advent of thin-layer chromatography as well as gas liquid chromatography provided an explosive impetus to research developments in this field. Concomitant advances in mass spectrometry allowed an interface with gas-liquid chromatography which spawned even greater insight into the structure of lipids. These eventful days of lipid chemistry nearly 25 years ago led to a relatively quiescent period wherein scientists applied these newly available techniques to investigation of the behavior of isolated (lipid) enzyme systems and to unraveling the intricacies of the metabolic behavior of lipids in the intact cell or whole organisms. Then, in the early 1960s, a decided change in research emphasis developed with the advent of a simple, reproducible procedure for the isolation of cell membranes.

Fatty Acids and Glycerides

Fatty Acids and Glycerides PDF

Author: A. Kuksis

Publisher: Springer Science & Business Media

Published: 2012-11-28

Total Pages: 482

ISBN-13: 146842565X

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The advances in lipid biochemistry over the past 25 to 30 years have been dramatic and exciting. The elucidation of the pathways of fatty acid biosynthesis and oxidation, the delineation of the biogenesis of cholesterol from small-molecular weight precursors, the structure proof of simple and complex lipids from plants, animals, and microorganisms, are excellent examples of the spectacular advances made during the golden era of lipid biochemistry. The multifaceted discoveries in these diverse areas of study could be attributed to development of highly sophisticated column chromatographic techniques for separation and purification of simple and complex lipids. The advent of thin-layer chromatography as well as gas liquid chromatography provided an explosive impetus to research developments in this field. Concomitant advances in mass spectrometry allowed an interface with gas-liquid chromatography which spawned even greater insight into the structure of lipids. These eventful days of lipid chemistry nearly 25 years ago led to a relatively quiescent period wherein scientists applied these newly available techniques to investigation of the behavior of isolated (lipid) enzyme systems and to unraveling the intricacies of the metabolic behavior of lipids in the intact cell or whole organisms. Then, in the early 1960s, a decided change in research emphasis developed with the advent of a simple, reproducible procedure for the isolation of cell membranes.

Fatty Acid and Lipid Chemistry

Fatty Acid and Lipid Chemistry PDF

Author: F.D. Gunstone

Publisher: Taylor & Francis US

Published: 1996-06-30

Total Pages: 272

ISBN-13: 9780834213425

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This book has pedigree. It has developed from experience over 50 years in reading, writing, thinking, and working with lipids and fatty acids. The study of lipids now involves many disciplines, all of which require a basic knowledge of the chemical nature and properties of these molecules. The book is written particularly for those who, with some knowledge of chemistry or biochemistry, need to know more about the mature of lipids and of fatty acids. It covers the materials they handle; their origin and chemical nature, the effects of processing, and their physical, chemical, biochemical, and nutritional properties. Another group of readers will be employed in the oleochemical industry modifying the material produced by nature for the benefit of human kind. They will have to understand the constraints of production and of chemistry within which they work and to be aware of the present state of knowledge about these materials. Yet another group may consider themselves to be academic researchers; however there is no escape from the real world of market place availability and they will need to know something about sourcing, about the changes which occur when oils and fat are refined and how these materials can be modified on a commercial scale.

Lipid Biochemistry: An Introduction

Lipid Biochemistry: An Introduction PDF

Author: M. I. Gurr

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 346

ISBN-13: 9400959079

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In the preface to the Second edition, we made a prediction that many exciting developments would take place in the coming years that would change the face of a new edition. This has indeed been the case and the current edition reflects these new advances. Our picture of the structure of the fatty acid synthetase has changed dramatically, bringing a new concept in enzymology - the multicatalytic polypeptide chain. This new knowledge owes much to the exploitation of genetic mutants, the use of which is undoubtedly going to extend into many other areas of lipid biochemistry. An understanding of the control of lipid metabolism has also advanced considerably during the last decade and we have tried to reflect that here, although it will be some years before a truly integrated picture can be obtained. For this reason we have continued to deal with the control of particular aspects of lipid metabolism - fatty acids, triacylglycerols, lipoprotein- in the specific chapters but we can foresee the time when a chapter on the overall integration of lipid metabolism will be appropriate and feasible. As a particular example, the exciting new concepts of the control of cholesterol metabolism in specific tissues via the interaction of low density lipoproteins with cell surface receptors have been described in Chapter 6.

The Chemistry and Technology of Edible Oils and Fats

The Chemistry and Technology of Edible Oils and Fats PDF

Author: J. Devine

Publisher: Elsevier

Published: 2016-06-23

Total Pages: 191

ISBN-13: 1483149536

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The Chemistry and Technology of Edible Oils and Fats contains the proceedings of a conference arranged by Unilever Limited and held at Port Sunlight in England on March 10-12, 1959. The papers explore the chemistry and technology of edible oils and fats, with emphasis on analytical procedures, the methods of industrial processing, and the pattern of dietary fat consumption seen from the viewpoint of the economist. This book is comprised of seven chapters and opens with a discussion on the physical and chemical properties of the constituents of edible oils and fats, with particular reference to the fatty acids, the glycerides, and those closely related compounds which are fatty in a general sense. The following chapters focus on the pattern of fatty food consumption in the United Kingdom; the methods used for the analysis of oils and fats; processing of oils and fats for edible purposes; the use of the isotopic dilution technique in the determination of linoleic acid; and the application of gas/liquid chromatography to the analysis of atheromatous plaques. The final chapter deals with the use of spectroscopic and X-ray techniques in the analysis of oils and fats. This monograph will be a useful resource for chemists and food technologists.

The Determination of Esterified Fatty Acids in Glycerides, Cholesterol Esters and Phosphatides

The Determination of Esterified Fatty Acids in Glycerides, Cholesterol Esters and Phosphatides PDF

Author: W. D. Skidmore

Publisher:

Published: 1962

Total Pages: 54

ISBN-13:

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The hydroxamic acid reaction conditions for the determination of esterified fatty acids were modified to the extent that the variable factors involved were controlled so that the molar absorptivities per ester group for triglycerides, cholesteryl esters of long-chain fatty acids, and phosphatides were equivalent through 8 microequivalent ester. The amount of water present during the formation of hydroxamates was the most important single factor in obtaining equivalent color values with these 3 types of esters. The accuracy and precision of the method were well defined by showing that the optical density values for 5 different ester standards were on the identical straight line curve. Spectral curves between the wavelengths of 410 and 700 millimicron with standard carboxylic acid esters and Folch extracts of rat serum, rat liver, and human serum were qualitatively and quantitatively identical. A long chain cholesteryl ester must be used as one of the standard esters because of its solubility characteristics and water sensitivity. Cholesteryl acetate can not be used as a reliable representative in place of a long chain cholesteryl ester. (Author).

Lipids in Foods

Lipids in Foods PDF

Author: Frank D Gunstone

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 185

ISBN-13: 148314884X

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Lipids in Foods: Chemistry, Biochemistry and Technology provides basic information on the biochemistry and technology of the fatty acids or lipids. This book notes that natural and processed fats and oils, whether of animal or vegetable origin, play a significant role in the economy of several countries including both oil-producers and oil-users. These materials are used extensively, but not exclusively, in the food industry. The first 10 chapters cover the basic chemistry and biochemistry of the fatty acids and their natural derivatives. These topics include an account of the chemical structure, separation, analysis, biochemistry, physical properties, chemical properties, and synthesis of these compounds. The remaining chapters include the recovery of fats and oils from their sources and the processes of refining, bleaching, hydrogenation, deodorization, fractionating, and interesterification. A segment is devoted to margarines and shortenings and to the problems of flavor stability and antioxidants. This text will be valuable to students wishing to know more about lipids and to those involved in this field of study.