FOOD SCIENCE

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Changes in Functional Properties of Myofibrillar Proteins during Postmortem Aging of Dazu Black Goat Meat

WANG Xiaojun1, WANG Xiaoxiang1, LIN Jing1, LI Lin1, SHANG Yongbiao1,2,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;
    2. Quality and Safety Risk Assessment Laboratory of Products Preservation (Chongqing), Ministry of Agriculture, Chongqing Engineering Research Center of Regional Food, Chongqing 400715, China
  • Online:2015-11-15 Published:2015-12-03

Abstract:

In this study, we examined changes in functional properties of myofibrillar proteins (MP) from the hind leg
muscle of Dazu black goat during postmortem aging. Results showed that with the extension of postmortem time, the
solubility, emulsifying activity index and emulsion stability of MPs rose initially and then fell, reaching minimum values at
24 h postmortem. In contrast, the opposite trend was observed for surface hydrophobicity, gel hardness and elasticity and
cooking loss, with maximum values observed at 24 h postmortem. Based on these observations, the best postmortem aging
time for improved processing characteristics of Dazu black goat meat is 72 h.

Key words: Dazu black goat meat, postmortem aging, myofibrillar protein, functional properties

CLC Number: