Moisture absorption early postmortem predicts ultimate drip loss in fresh pork

Area of Science:

• Meat Science
• Postmortem Muscle Physiology

Background:

• Water-holding capacity is crucial for meat quality and is influenced by postmortem metabolism.
• Understanding moisture dynamics postmortem is key to predicting meat quality traits like drip loss.

Purpose of the Study:

• To characterize postmortem moisture loss in pork muscle.
• To determine if early moisture losses can predict ultimate drip loss in fresh pork.

Main Methods:

• Cotton-rayon absorptive devices were used to measure moisture absorption in pork longissimus dorsi muscles over 24 hours postmortem.
• Moisture absorption was measured at various intervals post-exsanguination.
• Correlation analysis was performed between early absorption values and final drip loss.

Main Results:

• Greatest moisture absorption occurred at 105 minutes post-exsanguination.
• Drip loss varied significantly (0.6-15.3%) among pork carcasses.
• Early individual and accumulated moisture absorption values showed moderate correlations with final drip loss (r=0.33-0.48).

Conclusions:

• Significant moisture is lost from pork muscle tissue early postmortem.
• Measuring early postmortem moisture capture shows potential for predicting final drip loss in fresh meat.
• This method could aid in managing meat quality and reducing economic losses due to excessive drip loss.