Regor Mortis As Stiffness Of Death And The Cold Shorting In Meat

Studienarbeit aus dem Jahr 2020 im Fachbereich Tiermedizin / Veterinärmedizin, , Sprache: Deutsch, Abstract: Rigor mortis is Latin for "stiffness of death". It is used medically to describe the stiffness of skeletal muscles that appears soon after death. Fully developed rigor mortis in muscle is characterized by maximum loss of extensibility. Regor mortis can be classified in to three phases, the first phase, when a well-marked rigidity was established in the muscles, the second phase, when the complete rigidity was established and the third phase, where the rigor begin to pass off. Cold-shortening occurs when muscles are exposed to low temperatures (below 10 °C to 15 °C) early post mortem, when ATP and pH levels are still high (pH above 6.2). On the other hand, rigor tension occurs much later and at any temperature between 0 oC and 37 oC, reaching maximum values when ATP levels have been depleted and pH is at a minimum value. Cold shortening decreases tenderness which is due to muscle fiber contractions that occur before the onset of rigor. Different carcasses in the same chiller can undergo cold shortening that deteriorate the tenderness of meat. Toughening due to cold shortening cannot be eliminated by aging of meat. A thumb rule to avoid cold shortening is that the temperature of the muscle should be kept high i-e above 10oC till the pH of meat which is initially 7.0-7.2 at the time of death falls below 6.0.

Written as a textbook with an online laboratory manual for students and adopting faculties, this work is intended for non-science majors / liberal studies science courses and will cover a range of scientific principles of food, cooking and the science of taste and smell. Chapters include: The Science of Food and Nutrition of Macromolecules; Science of Taste and Smell; Milk, Cream, and Ice Cream, Metabolism and Fermentation; Cheese, Yogurt, and Sour Cream; Browning; Fruits and Vegetables; Meat, Fish, and Eggs; Dough, Cakes, and Pastry; Chilies, Herbs, and Spices; Beer and Wine; and Chocolate, Candy and Other Treats. Each chapters begins with biological, chemical, and /or physical principles underlying food topics, and a discussion of what is happening at the molecular level. This unique approach is unique should be attractive to chemistry, biology or biochemistry departments looking for a new way to bring students into their classroom. There are no pre-requisites for the course and the work is appropriate for all college levels and majors.

The book provides comprehensive coverage of the processing and preservation aspects of food science that include chemical, microbiological and technological processes on the one hand, and assessment of food quality and safety, new and modified foods by fermentation, food-boene diseases and food spoilage on the other. The preservation operations involving the use of high and low temperatures and radiation have also been discussed in detail. Intended as a textbook for undergraduate students of science and engineering, this study would also be of great help to postgraduate students offering courses in food science, and to professionals as well as academicians.

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.

Culinology: The Intersection of Culinary Art and Food Science will demonstrate how the disciplines of culinary arts and food science work hand in hand in the research and development of new manufactured food products for the commercial, retail, and foodservice industries. It will be the authoritative source that will add value and relevance to this growing discipline and its practitioners. Integrating culinary arts with food science and technology, this book provides the best strategy for developing successful food products on a large scale. Real-world applications and business models ground the book and clearly illustrate how the concepts and theories work in business and industry.

This textbook is intended for students of dietetics and applied home economics, for use in teacher training, higher hotel schools and for students of human nutrition in agricultural departments of universities. Students and others with a professional or personal interest who want to know more about foodstuffs and related products can also use it as a reference work. The first four chapters give a general introduction and deal with, in this order, production, distribution and legislation (Chapter 1), potential forms of quality deterioration and spoilage (Chapter 2), methods of preservation (Chapter 3), and the presence of additives and contaminants in foodstuffs (Chapter 4). The main part of the book (see the scheme on page 11) describes the various product groups and, group by group, deals with technology, composition, potential use and storage advice. Where appropriate, a description of typical and special products follows, including those that are not essential dietary items. We are indebted to the Board of Directors of the Hogeschool Nijmegen Akademie Dietetiek. We were allowed to use as the basis for this book a thesis written previously. We also thank our colleagues, especially those from the subject department of Food, and students from the Akademie Dietetiek for remarks and marginal notes, which they made in the aforementioned thesis.

The Encyclopedia of Meat Sciences, Second Edition, Three Volume Set prepared by an international team of experts, is a reference work that covers all important aspects of meat science from stable to table. Its topics range from muscle physiology, biochemistry (including post mortem biochemistry), and processing procedures to the processes of tenderization and flavor development, various processed meat products, animal production, microbiology and food safety, and carcass composition. It also considers animal welfare, animal genetics, genomics, consumer issues, ethnic meat products, nutrition, the history of each species, cooking procedures, human health and nutrition, and waste management. Fully up-to-date, this important reference work provides an invaluable source of information for both researchers and professional food scientists. It appeals to all those wanting a one-stop guide to the meat sciences. More than 200 articles covering all areas of meat sciences Substantially revised and updated since the previous edition was published in 2004 Full color throughout