Seafood Proteins

Fish and marine invertebrates are important sources of nutrients for the world's population, and many species have exceptionally high market value because of their exquisite sensory properties. Both the utilization of the available catch in different forms and the market price are affected by the quality of the fish. Proteins and nonprotein nitroge­ nous compounds playa crucial role in the nutritional value and sensory quality of seafoods as well as in the suitability of different species to various forms of processing, preservation, and use in other branches of the food industry. This role of proteins results from their basic chemical and biochemical properties and functions in different tissues. A presenta­ tion of the actual state of knowledge on seafood nitrogenous compounds in one volume may contribute to a better understanding of the involve­ ment of these components in all stages of handling and processing fish. It has been possible to prepare this text thanks to the cooperative effort of an international group of specialists. The editors of the book are greatly indebted to all colleagues who have willingly contributed to this volume, sharing their knowledge and experience, as well as to all persons who have granted permission to use their previously published materials. viii Preface ix A large part of the book has been prepared during my sabbatical in the Department of Marine Food Science, National Taiwan Ocean University (NTOU) in Keelung, Taiwan. Front Matter....Pages i-xi Introduction....Pages 1-5 The Contents of Proteins and Other Nitrogenous Compounds in Marine Animals....Pages 6-12 Sarcoplasmic Proteins and Other Nitrogenous Compounds....Pages 13-39 The Myofibrillar Proteins in Seafoods....Pages 40-57 Collagen in the Muscles and Skin of Marine Animals....Pages 58-70 The Involvement of Proteins and Nonprotein Nitrogen in Postmortem Changes in Seafoods....Pages 71-83 The Effect of Heat-Induced Changes in Nitrogenous Constituents on the Properties of Seafoods....Pages 84-98 Changes in Proteins in Frozen Stored Fish....Pages 99-112 Changes in proteins and nonprotein Nitrogen Compounds in Cured, Fermented, and Dried Seafoods....Pages 113-126 Functional Food Protein Ingredients from Fish....Pages 127-159 Seafood Protein in Human and Animal Nutrition....Pages 160-170 Proteins from Seafood Processing Discards....Pages 171-193 Biotechnological Applications of Seafood Proteins and Other Nitrogenous Compounds....Pages 194-216 Concluding Remarks....Pages 217-222 Back Matter....Pages 223-234 1 Introduction.- 2 The Contents of Proteins and Other Nitrogenous Compounds in Marine Animals.- 3 Sarcoplasmic Proteins and Other Nitrogenous Compounds.- 4 The Myofibrillar Proteins in Seafoods.- 5 Collagen in the Muscles and Skin of Marine Animals.- 6 The Involvement of Proteins and Nonprotein Nitrogen in Postmortem Changes in Seafoods.- 7 The Effect of Heat-Induced Changes in Nitrogenous Constituents on the Properties of Seafoods.- 8 Changes in Proteins in Frozen Stored Fish.- 9 Changes in Proteins and Nonprotein Nitrogen in Cured, Fermented, and Dried Seafoods.- 10 Functional Food Protein I