Download or read book Advances in NMR Spectroscopy for Lipid Oxidation Assessment written by Hong-Sik Hwang and published by Springer. This book was released on 2017-02-16 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief provides a comprehensive overview of NMR spectroscopy, covering techniques such as 1H, 13C, and 31P NMR, which are reliable tools to determine lipid oxidation level, to identify oxidation products, and to elucidate oxidation mechanism. The Brief shows that 1H NMR spectroscopy continually demonstrates reliability, accuracy, convenience, and advantages over conventional analytical methods in determination of the level of oxidation of edible oil during frying and storage through monitoring changes in several proton signals of oil, including olefinic, bisallylic and allylic protons. This modern analytical method is shown within this text to be used to identify oxidation products, including primary oxidation products such as hydroperoxides and conjugated dienes and secondary products such as aldehydes, ketones, epoxides and their derivatives. By identifying intermediates and final oxidation products, many oxidation mechanisms could be elucidated. A relatively newer method, the text demonstrates that 13C NMR and 31P NMR spectroscopy can also provide additional information on the molecular structure of an oxidation product. Backgrounds, principles, and advantages over conventional methods, most recent advances, and future prospects of these methods are discussed. Advances in NMR Spectroscopy for Lipid Oxidation Assessment begins by covering the various mechanisms of lipid oxidation, including various methods to determine oxidation products. NMR spectroscopy is then covered, including its applications in foods. The next section focuses on 1H NMR Spectroscopy, including its use for assessment of lipid oxidation during oil storage and frying. The following section focuses on 13C NMR spectroscopy, including its use in determining and identifying oxidation products and mechanisms. A final section focuses on sup31“/p>

Download or read book Analysis of Lipid Oxidation written by Afaf Kamal-Eldin and published by AOCS Publishing. This book was released on 2008-08-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lipid oxidation, though researched since the beginning of the 20th century, still gives no complete and satisfactory information on the composition of oxidized lipids. One important factor contributing to these gaps in our knowledge about lipid oxidation relates to the shortages in analytical methodology. Analytical methods suitable for oxidized lipids were often reviewed in the last decade, but mostly from the aspect of determination of individual oxidized lipid classes, such as peroxides, aldehydes, polar lipids, or polymers. In this book, they are treated from the standpoint of types of analytical methods used, including different volumetric methods, UV-visible spectrometric methods, high performance size-exclusion chromatography, nuclear magnetic resonance spectroscopy, electron spin resonance spectroscopy, and differential scanning calorimetry. Analysis of Lipid Oxidation is essential for further developments in analytical methodology and hyphenated techniques, with which more understanding of the reaction kinetics, mechanism, and implications will take place.

Download or read book Applications in Food Sciences written by Atta-ur-Rahman and published by Bentham Science Publishers. This book was released on 2016-04-12 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of NMR Spectroscopy is a book series devoted to publishing the latest advances in the applications of nuclear magnetic resonance (NMR) spectroscopy in various fields of organic chemistry, biochemistry, health and agriculture. The fourth volume of the series features several reviews focusing on NMR spectroscopic techniques in food sciences. Readers will find references on methods used to test food quality, food color analysis, the role of Tannins in wine taste as well as NMR studies on lipid oxidation and large protein complexes.

Download or read book IMPROVING LIPID OXIDATION MEASUREMENTS written by Emily Harris and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commonly used measures of lipid oxidation, such as the peroxide value (PV), conjugated diene value (CDV), and p-anisidine value (pAV) tests, are labourious and reagent-intensive. The objective of this thesis was to improve upon these methods. To assess the suitability of proton nuclear magnetic resonance (1H NMR) as an alternative method of measuring lipid oxidation, correlations between 1H NMR spectra and the PV, CDV, and pAV were evaluated by determining these parameters in soybean and canola oils oxidized to different extents. At high levels of oxidation, relationships were found between the measured PV and CDV and the 1H NMR signal responses of hydroperoxidic and conjugated dienic signals, respectively. A relationship was observed between the measured pAV and aldehydic signal responses only over a limited range. All relationships were hindered by poor sensitivity of the 1H NMR method. In the case of the pAV, sensitivity issues were compounded by deviation of the test from linearity at high levels of oxidation. These findings suggest that without additional time spent on sample preparation, instrument optimizations, or other sensitivity enhancements, 1H NMR cannot be applied to the quantitative assessment of oxidation in edible plant oils at low levels of oxidation. The pAV test can also be inaccurate due to contributions from aldehydic flavour compounds. For this reason, the Global Organization for EPA and DHA Omega-3s (GOED) recommends a modified method to measure the pAV of flavoured marine oils that is predicated on the assumption that the flavour compounds themselves do not oxidize or degrade as the oil oxidizes. To test the null hypothesis that flavour oxidation and/or degradation is not occurring, I performed stability studies to compare the pAV of fish oil samples to which flavour had been added before and after oxidation, respectively. The pAV and the 1H NMR signal responses of the aldehydic flavour signals in these oils were evaluated to determine the extent of flavour degradation over the course of oxidation. For several sampling points in both chocolate-vanilla and lemon flavoured oils, the pAV of oils to which flavour was added before oxidation were significantly lower than those of oils to which flavour was added after oxidation, suggesting that these flavours degrade during oxidation. These findings suggest that the GOED recommendation may not consistently provide accurate estimates of the pAV in all flavoured marine oils.

Download or read book Applications of NMR Spectroscopy written by Atta-ur-Rahman and published by . This book was released on 2016-01-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of NMR Spectroscopy is a book series devoted to publishing the latest advances in the applications of nuclear magnetic resonance (NMR) spectroscopy in various fields of organic chemistry, biochemistry, health and agriculture. The fourth volume of the series features several reviews focusing on NMR spectroscopic techniques in food sciences. Readers will find references on methods used to test food quality, food color analysis, the role of Tannins in wine taste as well as NMR studies on lipid oxidation and large protein complexes.

Download or read book Measuring Oxidants and Oxidative Stress in Biological Systems written by Lawrence J. Berliner and published by Springer Nature. This book was released on 2020-08-08 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the methods of analysis and determination of oxidants and oxidative stress in biological systems. Reviews and protocols on select methods of analysis of ROS, RNS, oxygen, redox status, and oxidative stress in biological systems are described in detail. It is an essential resource for both novices and experts in the field of oxidant and oxidative stress biology.

Download or read book Modern Magnetic Resonance written by Graham A. Webb and published by Springer Science & Business Media. This book was released on 2007-05-26 with total page 1889 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive collection of the applications of Nuclear Magnetic Resonance (NMR), Magnetic Resonance Imaging (MRI) and Electron-Spin Resonance (ESR). Covers the wide ranging disciplines in which these techniques are used: * Chemistry; * Biological Sciences; * Pharmaceutical Sciences; * Medical uses; * Marine Science; * Materials Science; * Food Science. Illustrates many techniques through the applications described, e.g.: * High resolution solid and liquid state NMR; * Low resolution NMR, especially important in food science; * Solution State NMR, especially important in pharmaceutical sciences; * Magnetic Resonance Imaging, especially important for medical uses; * Electron Spin Resonance, especially important for spin-labelling in food, marine and medical studies.

Download or read book In cell NMR Spectroscopy written by Yutaka Ito and published by Royal Society of Chemistry. This book was released on 2019-12-09 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-cell NMR spectroscopy is a relatively new field. Despite its short history, recent in-cell NMR-related publications in major journals indicate that this method is receiving significant general attention. This book provides the first informative work specifically focused on in-cell NMR. It details the historical background of in-cell NMR, host cells for in-cell NMR studies, methods for in-cell biological techniques and NMR spectroscopy, applications, and future perspectives. Researchers in biochemistry, biophysics, molecular biology, cell biology, structural biology as well as NMR analysts interested in biological applications will all find this book valuable reading.

Download or read book Advances in Noninvasive Food Analysis written by Muhammad Kashif Iqbal Khan and published by CRC Press. This book was released on 2019-10-16 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: To ensure food quality and safety food, professionals need a knowledge of food composition and characteristics. The analysis of food product is required for quality management throughout the developmental process including the raw materials and ingredients, but food analysis adds processing cost for food industry and consumes time for government agencies. Advances in Noninvasive Food Analysis explores the potential and recent advances in non-invasive food analysis techniques used to ensure food quality and safety. Such cost-reducing and time-saving non-destructive food analysis techniques covered include, Infrared, Raman Spectroscopy, and Nuclear Magnetic Resonance. The book also covers data processing and modelling. Features: Covers the advent of non-invasive, non-destructive methods of food analysis Presents such techniques as near and mid infrared, Raman Spectroscopy, and Nuclear Magnetic Resonance Describes the growing role of nanotechnology in non-invasive food analysis Includes image analysis and data processing and modelling required to sort out the data The prime for this book are food professionals working in industry, control authorities and research organizations that ensure food quality and safety as well as libraries of universities with substantial food science programs, food companies and food producers with research and development departments. Also available in the Contemporary Food Engineering series: Advances in Food Bioproducts, Fermentation Engineering and Bioprocessing Technologies , edited by Monica Lizeth Chavez Gonzalez, Nagamani Balagurusamy, Christobal N. Aguilar (ISBN 9781138544222) Advances in Vinegar Production, edited by Argyro Bekatorou (ISBN 9780815365990) Innovative Technologies in Seafood Processing, edited by Yesim Ozogul (ISBN 9780815366447)

Download or read book Experimental Approaches of NMR Spectroscopy written by The Nuclear Magnetic Resonance Society of Japan and published by Springer. This book was released on 2017-11-23 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the advanced developments in methodology and applications of NMR spectroscopy to life science and materials science. Experts who are leaders in the development of new methods and applications of life and material sciences have contributed an exciting range of topics that cover recent advances in structural determination of biological and material molecules, dynamic aspects of biological and material molecules, and development of novel NMR techniques, including resolution and sensitivity enhancement. First, this book particularly emphasizes the experimental details for new researchers to use NMR spectroscopy and pick up the potentials of NMR spectroscopy. Second, the book is designed for those who are involved in either developing the technique or expanding the NMR application fields by applying them to specific samples. Third, the Nuclear Magnetic Resonance Society of Japan has organized this book not only for NMR members of Japan but also for readers worldwide who are interested in using NMR spectroscopy extensively.

Download or read book Food Lipids written by Casimir C. Akoh and published by CRC Press. This book was released on 2008-03-17 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining the high standards that made the previous editions such well-respected and widely used references, Food Lipids: Chemistry, Nutrition, and Biotechnology, Third Edition tightens its focus to emphasize lipids from the point of entry into the food supply and highlights recent findings regarding antioxidants and lipid oxidation. Always representative of the current state of lipid science, this edition provides four new chapters reflecting the latest advances in antioxidant research. New chapters include: Polyunsaturated Lipid Oxidation in Aqueous Systems, Tocopherol Stability and the Prooxidant Mechanisms of Oxidized Tocopherols in Lipids, Effects and Mechanisms of Minor Compounds in Oil on Lipid Oxidation, and Total Antioxidant Evaluation and Synergism. The most comprehensive and relevant treatment of food lipids available, this book highlights the role of dietary fats in foods, human health, and disease. Divided into five parts, it begins with the chemistry and properties of food lipids covering nomenclature and classification, extraction and analysis, and chemistry and function. Part II addresses processing techniques including recovery, refining, converting, and stabilizing, as well as chemical interesterification. The third Part has been renamed and expanded to honor the growing data on oxidation and antioxidants. Part IV explores the myriad interactions of lipids in nutrition and health with information on heart disease, obesity, and cancer, and Part V continues with contributions on biotechnology and biochemistry including a chapter on the genetic engineering of crops that produce vegetable oil. Revised and updated with new information and references throughout the text, this third edition of a bestselling industry standard once again draws on the contributions of leading international experts to establish the latest benchmark in the field and provide the platform from which to further advance lipid science.

Download or read book Advances in Food Diagnostics written by Leo M. L. Nollet and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food diagnostics is a relatively new and emerging area fuelled inlarge part by the ever-increasing demand for food safety.Advances in Food Diagnostics provides the most updated,comprehensive professional reference source available, coveringsophisticated diagnostic technology for the food industry. EditorsNollet, Toldrá, and Hui and their broad team of internationalcontributors address the most recent advances in food diagnosticsthrough multiple approaches: reviewing novel technologies toevaluate fresh products; describing and analyzing in depth severalspecific modern diagnostics; providing an analysis of dataprocessing; and discussing global marketing with an insight intofuture trends. While covering conventional (typically lab-based) methods ofanalysis, the book focuses on leading-edge technologies that arebeing or about to be introduced. The book looks at areas such asfood quality assurance, safety and traceability. Issues such asimproved quality control, monitoring pesticide and herbicideresidues in food, determining the nutritional content of food anddistinguishing between GM and "conventional" foodstuffs arecovered. Advances in Food Diagnostics offers the foodprofessional what its title promises – the latest advances infood diagnostics and analysis.

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 Characterization of Nanoencapsulated Food Ingredients written by and published by Academic Press. This book was released on 2020-03-07 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterization of Nanoencapsulated Food Ingredients, Volume Four in the Nanoencapsulation in the Food Industry series, introduces some of the common instrumental analysis and characterization methods for the evaluation of nanocarriers and nanoencapsulated ingredients in terms of their morphology, size distribution, surface charge and composition, appearance, physicochemical and rheological properties, and antioxidant activity. Divided in five sections, the book covers the qualitative and quantitative properties of nanoencapsulated food ingredients by different characterization techniques, besides correlating nanocarrier behavior to their physicochemical and functional properties. Authored by a team of global experts in the fields of nano- and microencapsulation of food, nutraceutical, and pharmaceutical ingredients, this title is of great value to those engaged in the various fields of nanoencapsulation and nanodelivery systems. - Shows how different properties of nanoencapsulated food ingredients can be analyzed - Presents the mechanism of each characterization technique - Investigates how the analytical results can be understood with nanoencapsulated ingredients

Download or read book Advances in Food Biochemistry written by Fatih Yildiz and published by CRC Press. This book was released on 2009-12-16 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the biochemistry of food is basic to all other research and development in the fields of food science, technology, and nutrition, and the past decade has seen accelerated progress in these areas. Advances in Food Biochemistry provides a unified exploration of foods from a biochemical perspective. Featuring illustrations to elucidate m

Download or read book Lipid Oxidation written by Edwin N. Frankel and published by Elsevier. This book was released on 2014-01-23 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this second edition, Edwin Frankel has updated and extended his now well-known book Lipid oxidation which has come to be regarded as the standard work on the subject since the publication of the first edition seven years previously. His main objective is to develop the background necessary for a better understanding of what factors should be considered, and what methods and lipid systems should be employed, to achieve suitable evaluation and control of lipid oxidation in complex foods and biological systems. The oxidation of unsaturated fatty acids is one of the most fundamental reactions in lipid chemistry. When unsaturated lipids are exposed to air, the complex, volatile oxidation compounds that are formed cause rancidity. This decreases the quality of foods that contain natural lipid components as well as foods in which oils are used as ingredients. Furthermore, products of lipid oxidation have been implicated in many vital biological reactions, and evidence has accumulated to show that free radicals and reactive oxygen species participate in tissue injuries and in degenerative disease. Although there have been many significant advances in this challenging field, many important problems remain unsolved. This second edition of Lipid oxidation follows the example of the first edition in offering a summary of the many unsolved problems that need further research. The need to understand lipid oxidation is greater than ever with the increased interest in long-chain polyunsaturated fatty acids, the reformulation of oils to avoid hydrogenation and trans fatty acids, and the enormous attention given to natural phenolic antioxidants, including flavonoids and other phytochemicals.

Download or read book Food Authentication written by Contantinos A. Georgiou and published by John Wiley & Sons. This book was released on 2017-05-08 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of food authenticity is a vital component of quality control. Its importance has been highlighted in recent years by high-profile cases in the global supply chain such as the European horsemeat scandal and the Chinese melamine scandal which led to six fatalities and the hospitalisation of thousands of infants. As well as being a safety concern, authenticity is also a quality criterion for food and food ingredients. Consumers and retailers demand that the products they purchase and sell are what they purport to be. This book covers the most advanced techniques used for the authentication of a vast number of products around the world. The reader will be informed about the latest pertinent analytical techniques. Chapters focus on the novel techniques & markers that have emerged in recent years. An introductory section presents the concepts of food authentication while the second section examines in detail the analytical techniques for the detection of fraud relating to geographical, botanical, species and processing origin and production methods of food materials and ingredients. Finally, the third section looks at consumer attitudes towards food authenticity, the application of bioinformatics to this field, and the Editor’s conclusions and future outlook. Beyond being a reference to researchers working in food authentication it will serve as an essential source to analytical scientists interested in the field and food scientists to appreciate analytical approaches. This book will be a companion to under- and postgraduate students in their wander in food authentication and aims to be useful to researchers in universities and research institutions.