Journal
MEAT SCIENCE
Volume 111, Issue -, Pages 60-66Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2015.08.017
Keywords
Porcine longissimus muscle; Clove extract; Protein structure; Rhealogical property; Hydroxyl radical-generating system
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Funding
- National Natural Science Foundation of China [31471599]
- Research Item of Department of Education in Heilongjiang [12541574]
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Oxidation is a major cause of protein quality deterioration during the storage and processing of food. This study investigated the effects of clove extract (CE) on structural and rheological changes in porcine longissimus myofibrillar proteins (MP) and the effects of oxidizing radicals produced by a Fenton reaction system (FRS). Increased oxidation time was accompanied by increased carbonyl content, reduced Ca-ATPase activity, decreased enthalpy of denaturation, decreased thermal transition temperatures (P < 0.05), and increased protein susceptibility to thermal aggregation. The addition of CE significantly inhibited carbonyl formation (P < 0.05), enhanced solubility and thermal stability, and improved the gel formation ability (storage modulus, loss modulus) of MP. The protective effect of CE on protein denaturation was demonstrated by its efficacy in maintaining Ca-ATPase activity and decreasing the degree of protein aggregation. Overall, the hydroxyl radical-induced loss of the structural and functional properties of MP was significantly reduced by the presence of CE. (C) 2015 Elsevier Ltd. All rights reserved.
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