Impedance measurement for nondestructive venison pH estimation using touch-type electrodes
Akari Igarashi1, Takayuki Muramoto2
1Graduate School of Arts and Sciences, Iwate University, Morioka, Japan.
Animal Science Journal = Nihon Chikusan Gakkaiho
|January 8, 2025
Summary
Measuring venison
Area of Science:
- Food Science
- Meat Science
- Electrical Engineering
Background:
- Deer capture methods influence venison pH, impacting water-holding capacity (WHC) during heating.
- Accurate WHC assessment is crucial for venison processing and cooking.
- Current methods lack non-destructive ways to differentiate normal- and high-pH venison.
Purpose of the Study:
- To explore the relationship between venison pH and electrical impedance.
- To develop a non-destructive method for estimating venison pH.
Main Methods:
- Investigated the correlation between venison pH and impedance using touch-type electrodes.
- Measured impedance at 10 kHz before storage.
- Correlated impedance with pH after 24 hours of storage and drip loss.
Main Results:
- Found significant negative correlations between pre- and post-storage pH and drip loss (p < 0.05).
- Established a significant negative correlation between pre-storage impedance (10 kHz) and post-storage pH (p < 0.01).
- Developed an equation (y = -0.10x + 10.84) to estimate venison pH non-destructively.
Conclusions:
- Non-destructive estimation of venison pH is possible using impedance measurements.
- Touch-type electrodes at 10 kHz offer a viable method for assessing venison quality.
- This technique can aid in processing and quality control of venison.
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