Cis-Trans Isomeric Carotenoids, Vitamins A and Arylpolyenes PDF Download
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Author: L. Zechmeister
Publisher: Elsevier
ISBN: 1483264939
Category : Science
Languages : en
Pages : 266
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Book Description
Cis-Trans Isomeric Carotenoids, Vitamins A, and Arylpolyenes focuses on the reactions, characteristics, and properties of cis-trans isomeric carotenoids, vitamins A, and arylpolyenes. The publication first takes a look at carotenoids, number, types, and properties of cis carotenoids, and cis-trans isomerism and UV spectra. Discussions focus on simple theoretical interpretation of spectral phenomena, spectra at extremely low temperatures, relative stabilities, melting points, rotatory power, and historical remarks on the stereoisomerism of polyenes. The text then ponders on the preparation of cis carotenoids by direct rearrangement of the all-trans form and total synthesis and naturally occurring cis and polycis carotenoids. The manuscript examines some general remarks on configurational assignments, configurational assignments in certain stereoisomeric sets, and lower-molecular weight carotenoid-carboxylic acids. Topics include bixin set, stereoisomeric sets with two aromatic terminal groups, stereoisomeric sets with one hydroaromatic and one aliphatic terminal group, configuration and infrared spectrum, and stereoisomeric types. The manuscript also elaborates on vitamins A and retinenes, cumulenes with aromatic terminal groups, and polyene azines. The publication is a dependable source of information for researchers interested in cis-trans isomeric carotenoids, vitamins A, and arylpolyenes.
Author: L. Zechmeister
Publisher: Elsevier
ISBN: 1483264939
Category : Science
Languages : en
Pages : 266
Get Book Here
Book Description
Cis-Trans Isomeric Carotenoids, Vitamins A, and Arylpolyenes focuses on the reactions, characteristics, and properties of cis-trans isomeric carotenoids, vitamins A, and arylpolyenes. The publication first takes a look at carotenoids, number, types, and properties of cis carotenoids, and cis-trans isomerism and UV spectra. Discussions focus on simple theoretical interpretation of spectral phenomena, spectra at extremely low temperatures, relative stabilities, melting points, rotatory power, and historical remarks on the stereoisomerism of polyenes. The text then ponders on the preparation of cis carotenoids by direct rearrangement of the all-trans form and total synthesis and naturally occurring cis and polycis carotenoids. The manuscript examines some general remarks on configurational assignments, configurational assignments in certain stereoisomeric sets, and lower-molecular weight carotenoid-carboxylic acids. Topics include bixin set, stereoisomeric sets with two aromatic terminal groups, stereoisomeric sets with one hydroaromatic and one aliphatic terminal group, configuration and infrared spectrum, and stereoisomeric types. The manuscript also elaborates on vitamins A and retinenes, cumulenes with aromatic terminal groups, and polyene azines. The publication is a dependable source of information for researchers interested in cis-trans isomeric carotenoids, vitamins A, and arylpolyenes.
Author: W. H. Sebrell
Publisher: Academic Press
ISBN: 1483222071
Category : Science
Languages : en
Pages : 585
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Book Description
The Vitamins: Chemistry, Physiology, Pathology, Methods, Volume I, Second Edition covers the chemical, physiological, pathological, and methodological aspects of vitamin A, carotene, and ascorbic acid. This two-chapter volume concerns the chemistry, nomenclature, industrial production, biogenesis, biochemistry, deficiency effects, standardization of activity, requirements, pharmacology, and pathology of each of the vitamins. This book will be of value to practitioners, investigators, teachers, and students, who wants to better understand the role of the vitamins in biology.
Author: N.I. Krinsky
Publisher: Springer Science & Business Media
ISBN: 1461308496
Category : Science
Languages : en
Pages : 379
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Book Description
In the mid-1960's, scientists working on carotenoids throughout the World agreed to have periodic meetings for the purpose of discussing and disseminating scientific research results concerning all aspects of carotenoids. The meetings were also organized to act as teaching forums for students, and the major scientific results from each meeting were to result in a publication. Each meeting was planned to be International in scope, being held in different locations in the World, and organized by local, recognized carotenoid scientists. The first of the Carotenoid meetings was held in Trondheim, Norway in 1966. Meetings then followed in Las Cuces, New Mexico (1969); Cluj, Roumania (1972); Berne, Switzerland (1975); Madison, Wisconsin (1978); Liverpool; England (1981); and Munich, Federal Republic of Germany (1984). In all of these meetings, the original purposes which stimulated the first meeting were accomplished: scientific discussion, student education and resulting scientific publication.The meetings and the i~formation resulting from them have led to significant advances in carotenoid biochemistry, biology, and chemisty. This publication represents the contributions from a distinguished list of participants. We look forward to the future meetings in this series.
Author: Bennett
Publisher: CRC Press
ISBN: 1000110311
Category : Science
Languages : en
Pages : 495
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Book Description
The first source to unite secondary fungal metabolism and morphogenesis in one volume, Secondary Metabolism and Differentiation in Fungi treats biological systems as parts of a whole rather than as a series of individual elements, highlighting research in genetics, molecular biology, and ecology. Featuring the expertise of 19 international authorities, each chapter is a rich source of experimentation ideas. The book facilitates the application of novel techniques to existing problems in molecular mycology and explores potentials for major new research. This indispensable guide to a key scientific field benefits biologists, chemists, and other scientists.
Author:
Publisher: Academic Press
ISBN: 0080567606
Category : Technology & Engineering
Languages : en
Pages : 377
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Book Description
Advances in Food Research
Author: Seyed Mohammad Nabavi
Publisher: Academic Press
ISBN: 0128190973
Category : Medical
Languages : en
Pages : 914
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Book Description
Antioxidants Effects in Health: The Bright and the Dark Side examines the role that antioxidants play in a variety of health and disease situations. The book discusses antioxidants' historical evolution, their oxidative stress, and contains a detailed approach of 1) endogenous antioxidants, including endogenous sources, mechanisms of action, beneficial and detrimental effects on health, in vitro evidence, animal studies and clinical studies; 2) synthetic antioxidants, including sources, chemistry, bioavailability, legal status, mechanisms of action, beneficial and detrimental effects on health, in vitro evidence, animal studies and clinical studies; and 3) natural antioxidants, including sources, chemistry, bioavailability, mechanisms of action, possible prooxidant activity; beneficial and detrimental effects on health, in vitro evidence, animal studies and clinical studies. Throughout the boo, the relationship of antioxidants with different beneficial and detrimental effects are examined, and the current controversies and future perspectives are addressed and explored. Antioxidants Effects in Health: The Bright and the Dark Side evaluates the current scientific evidence on antioxidant topics, focusing on endogenous antioxidants, naturally occurring antioxidants and synthetic antioxidants. It will be a helpful resource for pharmaceutical scientists, health professionals, those studying natural chemistry, phytochemistry, pharmacognosy, natural product synthesis, and experts in formulation of herbal and natural pharmaceuticals. - Introduces recent information on antioxidants in a systematic way - Provides an overview of the history and function of antioxidants - Contains discussion of antioxidants including their chemistry, sources and main effects
Author: Marcel Florkin
Publisher: Elsevier
ISBN: 1483222195
Category : Science
Languages : en
Pages : 401
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Book Description
Comprehensive Biochemisty, Volume 27: Photobiology, Ionizing Radiations deals with the aspects of bioenergetics, immunochemistry, photobiology, and molecular phenomena that underlie the evolution of organisms. This book discusses the types of phototropic response, action spectra in the further ultraviolet, and structure and light-absorbing properties of the photoreceptor cells. The preliminary remarks on visual pigment structure, synopsis of extracted systems, oxidation of proteins, and effects of ultraviolet radiation and photoreactivation are also elaborated. This text likewise covers the chemical nature of photoreactivable damage, reversibility of potentiated flowering response, and primary reactions in algae and higher plants. This volume is beneficial to biochemists and specialists researching on ionizing radiations.
Author: John P. Smol
Publisher: Springer Science & Business Media
ISBN: 0306476681
Category : Science
Languages : en
Pages : 383
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Book Description
This third volume in the Developments in Paleoenvironmental Research series deals with the major terrestrial, algal, and siliceous indicators used in paleolimnology. Other volumes deal with the acquisition and archiving of lake sediment cores, chronological techniques, and large-scale basin analysis methods (Volume 1), physical and geochemical parameters and methods (Volume 2), zoological techniques (Volume 4), and statistical and data handling methods (Volume 5). These monographs will provide sufficient detail and breadth to be useful handbooks for both seasoned practitioners as well as newcomers to the area of paleolimnology. Although the chapters in these volumes target mainly lacustrine settings, many of the techniques described can also be readily applied to fluvial, glacial, marine, estuarine, and peatland environments.
Author: Leroy G. Augenstein
Publisher: Academic Press
ISBN: 1483282392
Category : Science
Languages : en
Pages : 297
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Book Description
Advances in Radiation Biology, Volume 1, provides an overview of the state of knowledge in radiation biology. The book contains six chapters and opens with a review some of the recent work bearing on the nature of the radicals produced in water and on the rates of some of the reactions of the radicals. It also comments on some of the applications of the radical model which have been made. These are followed by a chapter on the process of photosynthesis, covering light absorption and emission by pigments, electromagnetic energy transfer among and between pigment molecules, and the (physical) transfer and migration of electronic charge. Subsequent chapters deal with the effects of tritium irradiation on cells; the effects of small doses of ionizing radiation; the radiation chemical reactions of the amino acids; and the nature of temperature effects on enzyme inactivation by various radiations.
Author: Gerald Oster
Publisher: Academic Press
ISBN: 148319180X
Category : Science
Languages : en
Pages : 445
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Book Description
Physical Techniques in Biological Research, Second Edition, Volume I, Part A: Optical Techniques focuses on the methods and theory applied to relatively pure preparations of biological substances that are derived from cells or other tissue elements. This book covers a wide variety of nonoptical techniques. Organized into five chapters, this edition begins with an overview of the fundamental principles of operation of optical instruments that can be explained in terms of the simple operations of lenses or light rays. This text then examines the limits imposed on direct observation, either through an optical instrument or with the unaided eye, by the nature of light itself. Other chapters consider the potential of certain other microprobe methods. This book discusses as well the process of molecular spectroscopy. The final chapter deals with optical rotation and its dependence on wavelength. This book is a valuable resource for biologists, scientists, physicists, physical chemists, and research workers.
