"Protein-lipid complexes are known to result from complex molecular interactions which contribute to physiochemical and functional properties of foods. To identify the interactions of food proteins with lipids and the associated changes in properties, the following factors were investigated: incubation temperature, pH, type of lipids (phospholipid, triglyceride and fatty acids) and different proteins (ovalbumin and soybean glycinin). The effects of lipids on physiochemical and functional characteristics of ovalbumin and glycinin were investigated using polyacrylamide gel electrophoresis (PAGE), fluorescence, differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectroscopy, and emulsification and gelation properties." --

"Protein-lipid complexes are known to result from complex molecular interactions which contribute to physiochemical and functional properties of foods. To identify the interactions of food proteins with lipids and the associated changes in properties, the following factors were investigated: incubation temperature, pH, type of lipids (phospholipid, triglyceride and fatty acids) and different proteins (ovalbumin and soybean glycinin). The effects of lipids on physiochemical and functional characteristics of ovalbumin and glycinin were investigated using polyacrylamide gel electrophoresis (PAGE), fluorescence, differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectroscopy, and emulsification and gelation properties." --

The book is devoted to expanding current views on the phenomena of protein functionality in food systems. Protein functionalities in foods have been the object ofextensive research over the last thirty to forty years and significant progress has been made in understanding the mechanism and factors influencing the functionality of proteins. The functionality of proteins is one of the fastest developing fields in the studies of protein utilization in foods. Currently, a broad spectrum of data related to protein functionality in food systems has been collected, however, much more needs to be known. In this volume, the most important functional properties offood proteins are presented: Protein solubility, water holding capacity and fat binding, emulsifying, foaming, and gelling properties as affected by protein source, environmental factors (pH, temperature, ionic strength) and protein concentration; Relationships between protein conformation, physicochemical properties, and functional properties; Protein functional properties as influenced by various food processing conditions, particularly heat treatment, dehydration, freezing and storage when frozen, extraction and other processes; Effects ofprotein modification on the enhancementofprotein functionality; Utilization ofvarious proteins in improving functional properties in food systems. Those aspects of protein functionality are presented which the author believes to be interesting and most important for protein utilization in food systems. The book is recommended to students and food scientists engaged in food protein research and food industry research, and development scientists. Table ofContents Introduction 1 References 5 Chapter 1 Solubility ofProteins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1. 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1. 1. 1 Factors Affecting Solubility ofProteins. . . . . . . . . . . . . . . . . . . . . . . .

A multidisciplinary resource, Food Proteins and Peptides: Chemistry, Functionality, Interactions, and Commercialization enables researchers in biochemistry, biotechnology, food science and technology, nutrition, and medicine to understand the physicochemical and biochemical factors that govern the functionality of these food components. Following chapters on the structure and chemistry of amino acids, peptides, and proteins, the book describes modes of characterization and the functional relationships of food proteins. It examines protein solubility and insolubility and explores proteins and peptides as emulsifying and foaming agents. Specialized topics include: Factors affecting heat-induced casein–whey protein interactions in bovine milk systems The effects of protein–saccharide interactions on the properties of food components Ameliorative action of peptides on cholesterol and lipid metabolism Proteins and peptides with elements of sweetness, kokumi, umami, and bitterness A new approach for the large-scale fractionation of peptides based on their amphoteric nature The book examines the source of bioactive peptides and describes their bioavailability, including their absorption and occurrence in human blood. It also provides a database of biologically active proteins and peptides. Final chapters review current status, future industrial perspectives, and future trends of bioactive food proteins and peptides and explore the role of nanotechnology in protein research. With contributions from a panel of international scientists, this volume captures the state of the art in protein and peptide research, providing a launching pad for further inquiry and discovery.

Food proteins are of great interest, not only because of their nutritional importance and their functionality in foods, but also for their detrimental effects. Although proteins from milk, meats (including fish and poultry), eggs, cereals, legumes, and oilseeds have been the traditional sources of protein in the human diet, potentially any proteins from a biological source could serve as a food protein. The primary role of protein in the diet is to provide the building materials for the synthesis of muscle and other tissues, and they play a critical role in many biological processes. They are also responsible for food texture, color, and flavor. Today, food proteins are extracted, modified, and incorporated into processed foods to impart specific functional properties. They can also have adverse effects in the diet: proteins, such as walnuts, pecans, almonds, and cashews, soybean, wheat, milk, egg, crustacean, and fish proteins can be powerful allergens for some people. Applied Food Protein Chemistry is an applied reference which reviews the properties of food proteins and provides in-depth information on important plant and animal proteins consumed around the world. The book is grouped into three sections: (1) overview of food proteins, (2) plant proteins, and (3) animal proteins. Each chapter discusses world production, distribution, utilization, physicochemical properties, and the functional properties of each protein, as well as its food applications. The authors for each of the chapters are carefully selected experts in the field. This book will be a valuable reference tool for those who work on food proteins. It will also be an important text on applied food protein chemistry for upper-level students and graduate students of food science programs.

Chemical and Functional Properties of Food Proteins presents the current state of knowledge on the content of proteins in food structures, the chemical, functional, and nutritive properties of food proteins, the chemical and biochemical modification of proteins in foods during storage and processing, and the mutagenicity and carcinogenicity of nitrogenous compounds. It emphasizes the structure-function relationship as well as the effects of practical conditions applied in food processing on the biochemical and chemical reactions in food proteins and food product quality. The first ten chapters discuss structure-function relationships, methods of analysis of nitrogenous compounds, chemical and enzymatic modifications, nutritive roles, and mutagenicity and carcinogenicity of food proteins. The following six chapters describe the proteins of meat and fish, milk, eggs, cereals, legumes, oilseeds and single cell organisms, and present detailed information on the effects of conditions applied in storage and processing on the reactions in proteins and their impact on quality attributes of food products.

John E. Kinsella, Dean ofthe College of Agricultural and Environmental Sciences at the University of California-Davis, passed away on May 2, 1993, at the age of 55. In August 1995, fonner students and post-doctoral fellows of Dr. Kinsella met at the American Chemical Society National Meeting in Chicago to convene a Symposium on Food Proteins and Lipids to honor Dr. Kinsella's enonnous contribution to the field of food science and nutrition. This book is a collection of papers presented at that symposium. A native of Ireland, Dr. Kinsella received his bachelor's degree in agricultural sciences in 1961 from the University of Dublin. He received his master's degree in biology in 1965 and a doctorate in food chemistry in 1967 from Pennsylvania State University. He joined the Food Science faculty at Cornell University in 1967. While at Cornell, he served as Chair of the Department of Food Science from 1977-1985 and Director of the Institute of Food Science from 1980-1987. He was designated Liberty Hyde Bailey Professor of Food Biochemistry in 1981, a Fulbright Fellow in 1983, and was selected as the General Foods Distinguished Professor of Food Science in 1984. He was named a Leading Professor in the State University of New York, the highest professorial honor in the SUNY system. In 1990 he joined the University of California at Davis as Dean of the College of Agricultural and Environmental Sciences. Dr.