A nutritional supplement contains 60 % of dextrose, 5 % fat, and 8 % of protein. What will be it

Step 1: Calculate the calories from each macronutrient per gram of the supplement. Given that de

A nutritional supplement contains 60 % of dextrose, 5 % fat,...

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Key Concepts

Protein Nitrogen Content

Proteins are unique among macronutrients because they contain nitrogen. Approximately 16% of a protein’s weight is due to its nitrogen content, which is typically converted using the factor of 6.25 (since 1 divided by 0.16 equals 6.25). This conversion is essential for quantifying the nitrogen provided by protein, especially in clinical nutritional assessments.

Calorie:Nitrogen Ratio

The calorie:nitrogen ratio is a critical parameter in nutritional analysis that reflects the balance between caloric energy and the amount of nitrogen (from protein) in a diet or supplement. This ratio is calculated by dividing the total caloric content by the total nitrogen content, making it a valuable tool in managing dietary needs, particularly in clinical nutrition where protein balance is crucial.

Caloric Contribution of Macronutrients

Different macronutrients (carbohydrates, fats, and proteins) provide specific amounts of energy per gram—commonly 4 kcal/g for carbohydrates and proteins, and 9 kcal/g for fats. This concept is fundamental in nutritional science as it allows for the calculation of the total energy provided by a food source by applying these conversion factors to each macronutrient’s weight.

A nutritional supplement contains $60 \%$ of dextrose, $5 \%$ fat, and $8 \%$ of protein. What will be its calorie:nitrogen ratio?

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