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Effects of heat on meat proteins - Implications on structure and quality of meat products

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Author

Summary, in English

Globular and fibrous proteins are compared with regard to structural behaviour on heating, where the former expands and the latter contracts. The meat protein composition and structure is briefly described. The behaviour of the different meat proteins on heating is discussed. Most of the sarcoplasmic proteins aggregate between 40 and 60 ° C, but for some of them the coagulation can extend up to 90 ° C. For myofibrillar proteins in solution unfolding starts at 30-32 ° C, followed by protein-protein association at 36-40 ° C and subsequent gelation at 45-50 ° C (cone. > 0.5% by weight). At temperatures between 53 and 63 ° C the collagen denaturation occurs, followed by collagen fibre shrinkage. If the collagen fibres are not stabilised by heat-resistant intermolecular bonds, it dissolves and forms gelatine on further heating. The structural changes on cooking in whole meat and comminuted meat products, and the alterations in water-holding and texture of the meat product that it leads to, are then discussed. © 2005 Elsevier Ltd. All rights reserved.

Department/s

  • Department of Food Technology, Engineering and Nutrition

Publishing year

2005

Language

English

Pages

493-508

Publication/Series

Meat Science

Volume

70

Issue

3

Document type

Journal article

Publisher

Elsevier

Topic

  • Food Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 1873-4138