Related Experiment Videos
Summary
This study assessed the biological value of PSE (pale, soft, exudative) pork. Thermal treatment altered its nutritional value, but raw PSE meat showed comparable protein quality to normal meat.
Area of Science:
- Animal Nutrition
- Meat Science
- Biochemistry
Context:
- Assessing the nutritional quality of meat is crucial for understanding its impact on animal health and human diets.
- PSE meat, characterized by low pH, color, and water content, is a common issue in pork production.
- Bioassays using animal models provide a controlled environment to evaluate protein quality.
Purpose:
- To determine the biological value of PSE (pale, soft, exudative) meat protein in male Wistar rats.
- To compare the protein quality of raw and thermally treated PSE meat against normal pork.
- To evaluate the effects of thermal processing on the nutritional properties of PSE meat.
Summary:
- A ten-day bioassay was conducted on Wistar rats using PSE pork from the m. longissimus dorsi.
- Rats were fed either raw or thermally treated (75°C for 60 min) PSE meat.
- Protein quality was assessed using Protein Efficiency Ratio (PER), Net Protein Utilization (NPU), and Length of Protein Utilization (LPU) values.
Impact:
- Thermal treatment significantly altered the biological value of PSE meat, differentiating it from normal meat.
- Raw PSE meat exhibited a biological value similar to normal meat, suggesting processing impacts protein quality.
- Findings indicate that the processing method is a key factor in the nutritional outcome of PSE meat utilization.