Nutritive value of some common Egyptian meals

Area of Science:

• Nutritional Science
• Biochemistry
• Animal Nutrition

Background:

• Evaluating dietary protein quality is crucial for ensuring adequate nutrition.
• Common Egyptian meals like lentils and Koshari are staples, but their comparative protein value requires scientific assessment.
• Understanding protein quality aids in formulating balanced diets.

Purpose of the Study:

• To assess and compare the protein quality of lentils and Koshari using rat models.
• To investigate the reliability of serum urea content as a biomarker for protein quality evaluation.
• To explore the impact of cereal-legume combinations on protein bioavailability.

Main Methods:

• Protein quality was assessed in rats using Net Protein Ratio (NPR) and Relative Protein Value (RPV) methods.
• Serum urea content was measured as an indicator of protein metabolism.
• Casein served as the reference protein for comparative analysis.

Main Results:

• Koshari exhibited a higher Relative Protein Value (RPV) compared to lentils.
• Lower serum urea levels were observed in rats fed Koshari, indicating better protein utilization.
• The study found a negative correlation between serum urea levels and dietary protein biological value.

Conclusions:

• Koshari possesses superior protein quality over lentils, likely due to amino acid synergy between its cereal and legume components.
• The serum urea content method is a simple, reliable, and cost-effective approach for assessing dietary protein quality.
• Further research is recommended to validate the serum urea method for human dietary protein quality assessment.