Question

How much max calories will be your intake while eating 100g specially designed food having 1% Total Fat, 45% Total Protein, and 53% Total Carbohydrates?

• A. 661 Cal.
• B. 621 Cal.
• C. 401 Cal.
• D. 396 Cal.

Hint:

Remember the 4-4-9 rule of thumb for quick calculations:
- Protein: 4 Cal/g
- Carbs: 4 Cal/g
- Fat: 9 Cal/g
For 100g: \((45 \times 4) + (53 \times 4) + (1 \times 9) = 180 + 212 + 9 = 401\text{ Cal}\).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
To calculate the total caloric value of a food product, we use the standard physiological energy values of its macronutrients (proteins, carbohydrates, and fats).
These values are defined by the Atwater system:
- 1 gram of Carbohydrates provides 4 Calories (kcal).
- 1 gram of Protein provides 4 Calories (kcal).
- 1 gram of Fat provides 9 Calories (kcal).
Key Formula or Approach:
1. Determine the weight of each macronutrient in 100g of food:
\[ \text{Weight of nutrient (g)} = \text{Percentage} \times 100\text{g} \]
2. Calculate the total energy:
\[ \text{Total Calories} = (\text{g of Protein} \times 4) + (\text{g of Carbohydrates} \times 4) + (\text{g of Fat} \times 9) \]

Step 2: Detailed Explanation:
Let us identify the macronutrient composition of 100g of this food:
- Total Fat = 1% of 100g = 1g
- Total Protein = 45% of 100g = 45g
- Total Carbohydrates = 53% of 100g = 53g
Now, calculate the energy contribution of each macronutrient:
- Energy from Fat:
\[ 1\text{g} \times 9\text{ Cal/g} = 9\text{ Cal} \]
- Energy from Protein:
\[ 45\text{g} \times 4\text{ Cal/g} = 180\text{ Cal} \]
- Energy from Carbohydrates:
\[ 53\text{g} \times 4\text{ Cal/g} = 212\text{ Cal} \]
Sum these values to find the total caloric intake:
\[ \text{Total Calories} = 9 + 180 + 212 = 401\text{ Cal} \]
Therefore, the maximum caloric intake is 401 Cal.
This matches Option (C).

Step 3: Final Answer:
The correct option is (C).