Prediction of pork quality at the slaughter line using a portable Raman device
Rico Scheier1, Martin Scheeder2, Heinar Schmidt1
1Research Centre of Food Quality, University of Bayreuth, E.-C.-Baumannstraße 20, 95326 Kulmbach, Germany.
Meat Science
|February 4, 2015
Summary
Raman spectroscopy offers a new way to assess meat quality right after slaughter. This technology can measure early postmortem metabolism in pork muscles, predicting key traits like pH and drip loss.
Area of Science:
- Food Science
- Analytical Chemistry
- Spectroscopy
Background:
- Early postmortem meat quality assessment is crucial for the meat industry.
- Traditional methods are often time-consuming and destructive.
- Non-invasive techniques are needed for real-time quality evaluation at the abattoir.
Purpose of the Study:
- To investigate the potential of Raman spectroscopy for measuring early postmortem changes in intact porcine muscles.
- To predict key meat quality traits using Raman spectra obtained during the slaughtering process.
Main Methods:
- Intact porcine semimembranosus muscles (N=151) were analyzed 30-60 minutes postmortem using a handheld Raman device.
- Raman spectra were correlated with traditional quality measurements (pH35, pH24, drip loss) using Partial Least Squares Regression (PLSR).
Main Results:
- Raman spectroscopy successfully measured pH35 (R²=0.75) and predicted pH24 (R²=0.58) and drip loss (R²=0.83).
- High coefficients of determination and low errors in cross-validation demonstrate the predictive power of the technique.
Conclusions:
- Early postmortem Raman spectra can be used for on-line measurement of pH35 and prediction of pH24 and drip loss in pork.
- This non-invasive method shows significant potential for real-time quality control in the meat industry.
