Download or read book Phospholipid Reverse Micelles written by Bruce John Balcom and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrafast Dynamics of Phospholipid Water Interfaces written by René Costard and published by Springer. This book was released on 2015-08-08 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a highly innovative study of the ultrafast structural and vibrational dynamics of hydrated phospholipids, the basic constituents of cell membranes. As a novel approach to the water-phospholipid interface, the author studies phosphate vibrations using the most advanced methods of nonlinear vibrational spectroscopy, including femtosecond two-dimensional infrared spectroscopy. He shows for the first time that the structure of interfacial water undergoes very limited fluctuations on a 300 fs time scale and that the lifetimes of hydrogen bonds with the phospholipid are typically longer than 10 ps. Such properties originate from the steric hindrance of water fluctuations at the interface and the orienting action of strong electric fields from the phospholipid head group dipoles. In an extensive series of additional experiments, the vibrational lifetimes of the different vibrations and the processes of energy dissipation are elucidated in detail.
Download or read book Reverse Micelles written by European Science Foundation. Workshop and published by Springer. This book was released on 1984 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomolecules in Organic Solvents written by Armando Gomez-Puyou and published by CRC Press. This book was released on 1992-01-27 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomolecules and Organic Solvents discusses the behavior of enzymes and multi-enzyme complexes in organic solvents, in addition to the problem of water-protein interactions and the characteristics of water at interphases. It attempts to bridge the gap between the all water and the organic solvents systems from the point of view of enzyme structure and function. The mechanism of action of enzymes dispersed in anhydrous organic solvents and the biotechnological perspectives of the field are evaluated, and new information regarding the function and characteristics of complex multi-enzymatic systems and whole cells in organic solvents are examined. New developments regarding the nature of the water pool and interphases of reverse micelles and their enzyme kinetics are also explored. The characteristics and properties of enzymes trapped in reverse micelles are discussed throughout the book. Biomolecules in Organic Solvents is essential reading for biochemists, molecular biologists, and others working in related fields.
Download or read book Phospholipids Handbook written by Gregor Cevc and published by CRC Press. This book was released on 2018-04-27 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: Employing a multidisciplinary approach to phospholipid research, this work catalogues the current knowledge of this class of molecules and details the general, chemical, physical and structural properties of phospholipid monolayers and bilayers. Phospholipid applications are also covered.
Download or read book Nanocosmetics written by Jean Cornier and published by Springer. This book was released on 2019-06-14 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the application of nanotechnology to cosmetics. Edited by three respected experts in the field, the book begins with a general overview of the science behind cosmetics and skin care today, and of the status quo of nanotechnology in cosmetics. Subsequent chapters provide detailed information on the different nanoparticles currently used in cosmetics; the production and characterization of nanoparticles and nanocosmetics; and regulatory, safety and commercialization aspects. Given its scope, the book offers an indispensable guide for scientists in academia and industry, technicians and students, as well as a useful resource for decision-makers in the field and consumer organizations. Chapter 6 of this book is available open access under a CC BY 4.0 licence at link.springer.com.
Download or read book Minor Components and Their Roles on Lipid Oxidation in Bulk Oil that Contains Association Colloids written by Bingcan Chen and published by . This book was released on 2012 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combination of water and surface active compounds found naturally in commercially refined vegetable oils have been postulated to form physical structures known as association colloids. This research studied the ability of 1,2-dioleoyl-sn-glycerol-3-phosphocholine (DOPC) and water to form physical structures in stripped soybean oil. Interfacial tension and fluorescence spectrometry results showed the critical micelle concentration (CMC) of DOPC in stripped soybean oil was 650 and 950 microM, respectively. Light scattering attenuation results indicated that the structure formed by DOPC was reverse micelles. The physical properties of DOPC reverse micelles were determined using small-angle X-ray scattering (SAXS) and fluorescence probes. These studies showed that increasing the water concentration altered the size and shape of the reverse micelles formed by DOPC. The impact of DOPC reverse micelles on the lipid oxidation of stripped soybean oil was investigated by following the formation of primary and secondary lipid oxidation products. DOPC reverse micelles had a prooxidant effect, shortening the oxidation lag phase of SSO at 55 °C. It also was not able to change the lipid oxidation of stripped soybean oil compared with DOPC reverse micelles at same concemtration (i.e., 950 microM). 1,2-dibutyl-sn-glycerol-3-phosphocholine (DC4PC) which has the shorter fatty acid than DOPC was not able to form association colloids and did not impact lipid oxidation rates. This indicated that the choline group of the phospholipid was not responsible for the increased oxidation rates and suggested that the physical structure formed by DOPC was responsible for the prooxidant effect. The impact of the DOPC reverse micelles on the effectiveness and physical location of the antioxidants, alpha-tocopherol and Trolox was also studied. Both non-polar (alpha-tocopherol) and polar (Trolox) were able to inhibit lipid oxidation in stripped soybean oil in the presence of DOPC reverse micelles. Trolox was a more effective antioxidant than alpha-tocopherol. Fluorescence steady state and lifetime decay studies suggested that both alpha-tocopherol and Trolox were associated with DOPC reverse micelle in bulk oil. Trolox primarily concentrated in the water pool of reverse micelle since it quenched NBD-PE fluorescence intensity with increasing concentrations. A portion of alpha-tocopherol was also associated with the aqueous phase of the DOPC reverse micelles but this was likely at the oil-water interface since alpha-tocopherol is not water soluble. The addition of ferric chelator, deferoxamine (DFO) to stripped soybean oil significantly prevented the lipid oxidation caused by DOPC reverse micelles as the lag phase was extended from 2 to 7 days. DFO was also found to increase the antioxidant activity of both Trolox and alpha-tocopherol. Trolox and alpha-tocopherol were found to be rapidly decomposed by high-valence Fe(III) while low-valence-state (Fe (II) was much less reactive. Fe(III) was also consumed by both hydrophilic Trolox and lipophilic alpha-tocopherol presumably though reduction to Fe (II). DOPC reverse micelles were able to decrease antioxidants-iron interactions as evidence by a decrease in antioxidant depletion by iron and a decrease in iron reduction by the antioxidants. These results suggested that the ability of DFO to increase the antioxidant activity of alpha-tocopherol and Trolox was due to its ability to decrease free radical production and not its ability to decrease direct iron-antioxidant interactions. Overall, the results presented in this dissertation show phospholipids and water can form reverse micelles in edible oils. These reverse micelles increase lipid oxidation rates by increasing the prooxidant activity of iron. Free radical scavenging antioxidants can inhibit oxidation promoted by the reverse micelles with polar Trolox being more effective than non-polar alpha-tocopherol presumably because Trolox is more highly associated with the reverse micelle. The reverse micelles produced by DOPC protected alpha-tocopherol and Trolox from direct degradation by iron. The knowledge gained from this study will improve our understanding of the mechanism of lipid oxidation in bulk oils which will hopefully provide new technologies to improve the oxidation stability of edible oils. For example, it may be able to use oil refining technologies to remove prooxidative minor components that for physical structure in bulk oils.
Download or read book Water in Biological and Chemical Processes written by Biman Bagchi and published by Cambridge University Press. This book was released on 2013-11-14 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unified overview of the dynamical properties of water and its unique and diverse role in biological and chemical processes.
Download or read book Handbook of Encapsulation and Controlled Release written by Munmaya Mishra and published by CRC Press. This book was released on 2015-12-01 with total page 1516 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of encapsulation, especially microencapsulation, is a rapidly growing area of research and product development. The Handbook of Encapsulation and Controlled Release covers the entire field, presenting the fundamental processes involved and exploring how to use those processes for different applications in industry. Written at a level comp
Download or read book Lipid Oxidation in Food and Biological Systems written by Carlos Bravo-Diaz and published by Springer Nature. This book was released on 2022-02-06 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a new physical chemistry perspective on the control of lipid oxidation reactions by antioxidants, and it further explores the application of several oxidation inhibition strategies on food and biological systems. Divided in 3 parts, the book reviews the latest methods to control lipid oxidation, it examines lipid oxidation and inhibition in different food systems, and it finishes with an overview of the biological, health and nutritional effects of lipid oxidation. Chapters from expert contributors cover topics such as the use of magnetic methods to monitor lipid and protein oxidation, the kinetics and mechanisms of lipid oxidation and antioxidant inhibition reactions, interfacial chemistry, oxidative stress and its impact in human health, nutritional, sensory and physiological aspects of lipid oxidation, and new applications of plant and marine antioxidants. While focused on lipid peroxidation in food and biological systems, the chemistry elucidated in this book is applicable also to toxicology, medicine, plant physiology and pathology, and cosmetic industry. The book will therefore appeal to researchers in the lipid oxidation field covering food, biological and medical areas.
Download or read book Phosphatidylcholine Metabolism written by Dennis E. Vance and published by CRC Press. This book was released on 1989-08-31 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to be published as a single source reference on phosphatidylcholine metabolism. It provides a cogent and timely summary of research in this topic. Beginning with a chapter by Eugene Kennedy providing an historical perspective; the book proceeds to describe the latest developments in enzymes involved in phosphatidylcholine biosynthesis. Biological chemists, students, and investigators in the field of lipid metabolism will find this book of great benefit in their research.
Download or read book Multiphase Bioreactor Design written by Joaquim M.S. Cabral and published by CRC Press. This book was released on 2001-09-20 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioreaction engineering is fundamental to the optimization of biotechnological processes and the production of biochemicals by enzymes, microbial, plant and animal cells and higher organisms. A reference text for postgraduate students and researchers in biochemical engineering and bioreactor design, Multiphase Bioreactor Design describes the
Download or read book Cancer Therapy written by Surendra Nimesh and published by Elsevier. This book was released on 2024-05-31 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: While there have been a large number of ongoing research projects and publications on the treatment of cancer, there is a limited number of books related to nanotechnology with emphasis on polymeric nanoparticles in cancer therapy. The book, covering all of the recent research work done on this basis, enlightens researchers and students with the benefits of polymeric nanomaterials in cancer. This book provides exhaustive knowledge on polymeric nanoparticles and cancer. Provides a complete overview of the application of different polymeric nanoparticles in cancer therapeutics: from characterization of nanoparticles to in vitro and in vivo studies. Contains a detailed description of the delivery of therapeutic molecules with different polymers realized with nanomedicine in cancer therapeutics. Discusses newly developed promising polymers in cancer. Describes polymeric nanoparticle and their role in theranostics pertaining to cancer. Reviews clinical relevance of different polymeric formulations in the field of cancer
Download or read book Handbook of Antioxidants for Food Preservation written by Fereidoon Shahidi and published by Woodhead Publishing. This book was released on 2015-02-25 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lipid oxidation in food leads to rancidity, which compromises the sensory properties of food and makes it unappealing to consumers. The growing trend towards natural additives and preservatives means that new antioxidants are emerging for use in foods. This book provides an overview of the food antioxidants currently available and their applications in different food products. Part one provides background information on a comprehensive list of the main natural and synthetic antioxidants used in food. Part two looks at methodologies for using antioxidants in food, focusing on the efficacy of antioxidants. Part three covers the main food commodities in which antioxidants are used. Reviews the various types of antioxidants used in food preservation, including chapters on tea extracts, natural plant extracts and synthetic phenolics Analyses the performance of antixoxidants in different food systems Compiles significant international research and advancements
Download or read book Magnetic Resonance in Colloid and Interface Science written by J. Fraissard and published by Springer Science & Business Media. This book was released on 2002 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, 26-30 June 2001, St.Petersburg, Russia
Download or read book Encyclopedia of Interfacial Chemistry written by and published by Elsevier. This book was released on 2018-03-29 with total page 5276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions
Download or read book Handbook of Nanotechnology in Nutraceuticals written by Shakeel Ahmed and published by CRC Press. This book was released on 2022-11-21 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology has been emerging as an important tool in the nutraceutical and food industries to improve the overall quality of life. Nanotechnology has established a new horizon by bestowing modified properties on nanomaterials and applying them to the production of nanoformulations, nutritional supplements, and the food industry. The Handbook of Nanotechnology in Nutraceuticals highlights the impact of nanotechnology on the food industries. The book focuses on the application of nanotechnology in nutraceuticals and the food industry to improve the overall quality of life. The book also addresses some important applications of nano-nutraceuticals in the treatment of different diseases, such as oxidative stress, cancer, neurodegenerative disorders, cardiovascular diseases, and so on. Features • Presents a scientometric approach to analyze the emergence of nano-nutraceuticals in cancer prevention and treatment • Examines various strategies employed to prepare nanocarrier systems, such as nanoparticles, nanostructure lipids, phospholipid-based nanocarriers, polysaccharide-based nanostructures, and metal nanoparticles • Discusses various regulatory issues related to nanotechnology and their application in different fields This book is a valuable reference for nanotechnologists, scientists, and researchers working in the field of food technology, food science, pharmaceuticals, and nutraceuticals.
