The level of heat shock protein 90 in pig Longissimus dorsi muscle and its relationship with meat pH and quality

作者：Zhang Muhan; Wang Daoying^*; Geng Zhiming; Bian Huan; Liu Fang; Zhu Yongzhi; Xu Weimin

来源：Food Chemistry, 2014, 165: 337-341.

DOI：10.1016/j.foodchem.2014.05.111

• pH
• HSP90
• Water holding capacity

The 90 kDa heat shock protein (HSP90) is a molecular chaperone that participates in various cellular processes, the role and significance of HSP90 in postmortem muscle though remains unclear. In the present study, pig Longissimus dorsi muscles, categorized into three pH groups, were tested for HSP90 levels and meat quality parameters (i.e. water holding capacity, colour, tenderness and lipid oxidation). The muscles with a high initial pH (pHi) group (pH > 6.4) possessing the greatest water holding capacity and lightness, contained the highest HSP90 level, followed by intermediate (6.0-6.4) and low pHi groups (pH < 6.0). Statistical analysis indicated HSP90 level was significantly and negatively correlated with cooking loss, drip loss, and lightness (r = -0.797, -0.785, -0.604, respectively, P < 0.01). The results suggest that HSP90 may play a crucial role in water retention of meat and may be involved in postmortem meat quality development.

• 出版日期2014-12-15
• 单位江苏省农业科学院