Estimating the Textural Properties of Bromelain-Tenderized Beef by Impedance Measurement

Area of Science:

• Food Science
• Biotechnology
• Materials Science

Background:

• Meat hardness is a key textural attribute influencing consumer acceptance.
• Bromelain, a pineapple enzyme, effectively tenderizes meat by degrading collagen.
• Traditional methods for evaluating meat texture, such as shear strength, are destructive.

Purpose of the Study:

• To develop a nondestructive method for assessing beef tenderness using impedance measurements.
• To investigate the relationship between electrical impedance and textural properties of bromelain-treated beef.
• To establish a non-destructive technique for estimating the hardness and water-holding capacity of tenderized beef.

Main Methods:

• Beef muscles were treated with bromelain solution to induce artificial tenderization.
• Electrical impedance measurements were performed using touch-type electrodes.
• Correlations between impedance values and textural properties (maximum load, total loss) were analyzed.

Main Results:

• Bromelain treatment significantly reduced the maximum load (hardness) of beef (p < 0.01).
• Significant positive correlations were observed between total loss and impedance across all frequencies (p < 0.01).
• Significant negative correlations were found between maximum load and impedance at specific frequencies (120 Hz, 20 kHz, 100 kHz).

Conclusions:

• Electrical impedance measurement offers a viable nondestructive method for evaluating bromelain-induced beef tenderization.
• This technique can accurately estimate the water-holding capacity and hardness of tenderized beef.
• Impedance analysis provides a promising alternative to destructive testing methods in meat quality assessment.