Analytical Techniques for Studying the Physical Properties of Lipid Emulsions
Analytical Techniques for Studying the Physical Properties of Lipid Emulsions

Author: Maria Herrera

Publisher: Springer Science & Business Media

Published: 2012-03-07

Total Pages: 68

ISBN-13: 1461432553

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This book will review old and new methods to study emulsion stability and structure. Examples of emulsion-based foods include ice cream, yoghurt, and mayonnaise. The physicochemical properties of emulsions play an important role in food systems, as they directly contribute to the texture, sensory and nutritional properties of foods. One of the main properties is stability, which refers to the ability of an emulsion to resist physical changes over time. The development of an effective strategy to prevent undesirable changes in the properties of a particular food emulsion depends on the dominant physicochemical mechanism(s) responsible for the changes. In practice, two or more of these mechanisms may operate in concert. It is therefore important for food scientists to identify the relative importance of each mechanism, the relationship between them, and the factors that influence them, so that effective means of controlling the stability and physicochemical properties of emulsions can be established. Several techniques are used to study the physical behavior and structure of emulsions. Each technique has its advantages and disadvantages and provides different insights into the destabilization mechanisms. Among the oldest methods used to study emulsion stability is visual observation and small deformation rheometry. More recently, other techniques, such as ultrasound profiling, microscopy, droplet size distribution, and measurement of surface concentration to characterize adsorbed protein at the interface, have also been employed. Some of these techniques, such as droplet size distribution, involve some form of dilution. However, dilution disrupts some structures that play an important role in stability. The ability to study the stability of food emulsions in their undiluted form may reveal subtle nuances about their stability. Diffusing wave spectroscopy (DWS), laser scanning confocal microscopy (LSCM), nuclear magnetic resonance (NMR), and Turbiscan are among the more powerful, non-perturbing techniques used to characterized emulsions.

Analytical Techniques for Studying the Physical Properties of Lipid Emulsions
Analytical Techniques for Studying the Physical Properties of Lipid Emulsions

Author: Maria Herrera

Publisher: Springer

Published: 2012-03-07

Total Pages: 66

ISBN-13: 9781461432579

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This book will review old and new methods to study emulsion stability and structure. Examples of emulsion-based foods include ice cream, yoghurt, and mayonnaise. The physicochemical properties of emulsions play an important role in food systems, as they directly contribute to the texture, sensory and nutritional properties of foods. One of the main properties is stability, which refers to the ability of an emulsion to resist physical changes over time. The development of an effective strategy to prevent undesirable changes in the properties of a particular food emulsion depends on the dominant physicochemical mechanism(s) responsible for the changes. In practice, two or more of these mechanisms may operate in concert. It is therefore important for food scientists to identify the relative importance of each mechanism, the relationship between them, and the factors that influence them, so that effective means of controlling the stability and physicochemical properties of emulsions can be established. Several techniques are used to study the physical behavior and structure of emulsions. Each technique has its advantages and disadvantages and provides different insights into the destabilization mechanisms. Among the oldest methods used to study emulsion stability is visual observation and small deformation rheometry. More recently, other techniques, such as ultrasound profiling, microscopy, droplet size distribution, and measurement of surface concentration to characterize adsorbed protein at the interface, have also been employed. Some of these techniques, such as droplet size distribution, involve some form of dilution. However, dilution disrupts some structures that play an important role in stability. The ability to study the stability of food emulsions in their undiluted form may reveal subtle nuances about their stability. Diffusing wave spectroscopy (DWS), laser scanning confocal microscopy (LSCM), nuclear magnetic resonance (NMR), and Turbiscan are among the more powerful, non-perturbing techniques used to characterized emulsions.

Dietary Lipids: Nutritional and Technological Aspects
Dietary Lipids: Nutritional and Technological Aspects

Author:

Publisher: Elsevier

Published: 2023-07-27

Total Pages: 412

ISBN-13: 0443185913

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Dietary Lipids: Nutritional and Technological Aspects, Volume 105 focuses on major dietary lipids and their minor bioactive compounds, also covering the role of these lipids in metabolic diseases and covering oil processing with clean technologies and lipidomic characterization by mass spectrometry. Specific chapters in this new release include Major Dietary Lipids in Nutrition and Health, Minor bioactive lipids, Cleaner Processing for Lipids: Supercritical Fluid Extraction and Short Path Distillation, Nutritional Lipidomics for the Characterization of Lipids in Food, We are what we eat? The Role of Lipids in Metabolic Disease, Lipid Emulsions in Clinical Nutrition: Enteral and Parenteral Nutrition, and much more. - Presents the latest information on dietary lipids - Covers lipids and their critical role in nutrition - Updates on mass spectrometry and clean technologies

Nutrient Delivery
Nutrient Delivery

Author: Alexandru Grumezescu

Publisher: Academic Press

Published: 2016-08-12

Total Pages: 852

ISBN-13: 012804375X

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Nutrient Delivery: Nanotechnology in the Agri-Food Industry, Volume Five, discusses the fabrication, merits, demerits, applications, and bioavailability enhancement mechanisms of various nanodelivery systems. Recent developments in various nanodelivery systems are also highlighted. Volume 5 contains twenty chapters, prepared by outstanding international researchers from Argentina, Brazil, Canada, China, Croatia, India, Iran, Ireland, México, Pakistan, Portugal, Serbia, Sri Lanka, and the United States. In recent years, the delivery of micronutrients at nanoscale has been widely studied as these systems have the potential to improve bioavailability, enable controlled release and enhance stability of food bioactives to a greater extent. The nanodelivery systems typically consist of the food bioactive compound encapsulated and stabilized in food grade ingredients such as lipids, proteins or polysaccharides with diameters ranging from 10 nm to 1000 nm. Among these, the lipid based delivery systems such as nanoemulsions, solid lipid nanoparticles, nanoliposomes and micelles are widely studied for the delivery of lipophilic bioactive compounds. These delivery vehicles improve the solubility, permeability, stability and bioavailability of the lipophilic compounds thereby enhancing their potential for oral delivery and functional food development. On the other hand, the hydrophilic bioactives are delivered through protein, polysaccharide or biopolymer based colloidal nanosystems such as hydrogels, nanogels and polymer nanoparticles. The major concern other than solubility is the intestinal permeability of the micronutrients. For instance, the delivery system for compounds with poor intestinal permeability and low solubility need to be carefully designed using suitable lipids and surfactants. - Offers updated material for undergraduate and postgraduate students in food science, biotechnology, and related engineering fields - Provides a valuable resource of recent scientific progress, along with most known applications of nanomaterials in the food industry for researchers, engineers, and academics - Includes novel opportunities and ideas for developing or improving technologies in the food industry

Handbook of Food Analytical Chemistry, Volume 1
Handbook of Food Analytical Chemistry, Volume 1

Author: Ronald E. Wrolstad

Publisher: John Wiley & Sons

Published: 2005-09-02

Total Pages: 1397

ISBN-13: 0471709093

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Emphasizing effective, state-of-the art methodology and written by recognized experts in the field, the Handbook of Food Analytical Chemistry is an indispensable reference for food scientists and technologists to enable successful analysis. * Provides detailed reports on experimental procedures * Includes sections on background theory and troubleshooting * Emphasizes effective, state-of-the art methodology, written by recognized experts in the field * Includes detailed instructions with annotated advisory comments, key references with annotation, time considerations and anticipated results

Applications of NMR Spectroscopy: Volume 1
Applications of NMR Spectroscopy: Volume 1

Author: Atta-ur Rahman

Publisher: Elsevier

Published: 2015-12-11

Total Pages: 238

ISBN-13: 1608059626

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Applications of NMR Spectroscopy, Volume 1, originally published by Bentham and now distributed by Elsevier, presents the latest developments in the field of NMR spectroscopy, including the analysis of edible oils and lipid content in foods, the role of NMR spectroscopy in the human metabolomics and the diagnosis of autism-related disorders, protein-protein interactions, and NMR spectroscopy of chiral molecules. The fully illustrated chapters contain comprehensive references to the recent literature. The applications presented cover a wide range of the field, such as drug development, medical imaging and diagnostics, food science, mining, petrochemical, process control, materials science, and chemical engineering, making this resource a multi-disciplinary reference with broad applications. The content is ideal for readers who are seeking reviews and updates, as it consolidates scientific articles of a diverse nature into a single volume. Sections are organized based on disciplines, such as food science and medical diagnostics. Each chapter is written by eminent experts in the field. - Consolidates the latest developments in NMR spectroscopy into a single volume - Authored and edited by world-leading experts in spectroscopy - Features comprehensive references to the most recent related literature - More than 75 illustrations aid in the retention of key concepts

Physical Properties of Lipids
Physical Properties of Lipids

Author: Alejandro G. Marangoni

Publisher: CRC Press

Published: 2002-03-04

Total Pages: 565

ISBN-13: 0203909178

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Provides in-depth coverage of the physical properties of fats and oils. Includes surface and theological characteristics as well as crystallization and phase behavior for improved nutrition and functionality in the design of new food products.

Intravenous Lipid Emulsions
Intravenous Lipid Emulsions

Author: P.C. Calder

Publisher: Karger Medical and Scientific Publishers

Published: 2014-11-26

Total Pages: 188

ISBN-13: 3318027537

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Lipids have been in clinical use as components of intravenous nutrition for over 50 years. Over the last 15 years, new and improved lipids that include olive oil and/or fish oil have replaced the more traditional ones. These new lipids offer the opportunity to deliver high amounts of fatty acids and possess different functional properties: in particular, they can influence inflammatory processes, immune responses and hepatic metabolism. This book brings together articles written by leading international authorities in the area of intravenous lipids. Contributions discuss the latest findings in the field, ranging from pre-clinical research to the most recent clinical trials. Lipid functionality and utility in pediatric, adult surgical and critically ill patients are covered, as is the use of lipids in long-term home parenteral nutrition. Addressing a broad spectrum of topics, this publication provides a wealth of information for basic scientists, clinical researchers and clinical practitioners alike.