Nutritional Analysis (AQA GCSE Food Preparation & Nutrition)
Revision Note
Written by: Cara Head
Reviewed by: Lára Marie McIvor
How to carry out nutritional analysis
A nutritional analysis is used to find out the nutrient values of a recipe, meal or diet
Each ingredient has a nutrient value which can be sourced from food tables or nutritional analysis software
Nutritional analysis can be used to plan and modify recipes, meals and diets to reflect the nutritional guidelines for a healthy diet
In the UK, the Eatwell Plate should be referred to when planning meals, thus recipes and diets should be modified to reflect this
Ingredients and cooking methods can be changed to ensure meals are nutritionally balanced, e.g.:
Salt and sugar can be replaced with a variety of herbs and spices, or natural sweeteners such as dates or honey
Wholegrain carbohydrates can be used instead of white rice and pasta which will increase fibre intake
Leaner cuts of meat can be used instead of high-fat choices such as sausages
Portion size can be controlled to follow recommended daily energy intakes
Overall diet can be modified to suit a person's needs e.g.
Someone who is obese may need a diet with lower fat intake
A diabetic person will need to manage and modify the sugars and carbohydrates consumed
A vegan diet will need careful consideration to replace proteins found in meat and ensure daily requirements are met
Using food tables for nutritional analysis
Food tables list ingredients alphabetically or by group to show the amount of nutrients per 100 g of food
The nutrient value may need to be converted into the quantity required for a specific recipe (which may not be 100 g)
Food table example
Food per 100 g | Energy (kcal) | Protein (g) | Fat (g) | Carbohydrate (g) |
---|---|---|---|---|
Lamb | 294 | 25 | 19 | 0 |
Lemon | 29 | 1 | 0 | 9 |
Lettuce | 14 | 1 | 0 | 3 |
Lentils | 116 | 9 | 0.5 | 20 |
Worked Example
A recipe requires 85 g of lentils.
Calculate the amount of carbohydrate contained in the lentils for this recipe.
Step 1 Use a food table (above) to determine the amount of carbohydrate in 100 g of lentils
Lentils contain 20 g carbohydrate per 100 g
Step 2 Divide by 100 g to determine grams of carbohydrate per 1 g
20 / 100 = 0.2 g carbohydrate per 1 g
Step 3 Multiply by 85 g
0.2 x 85 = 17 g carbohydrate in 85 g of lentils
Using nutritional analysis software
Many online nutritional software are available to determine the nutritional analysis of food
The food ingredient is searched for
The mass or volume required for recipes or diets can be adjusted
Portions per person can also be calculated
The nutrients and energy for the specific portions and weights required will be shown
Some programs allow comparisons of nutritional values to recommended guidelines
Examiner Tips and Tricks
You can easily convert between millilitres and grams for different recipes or nutritional analysis data e.g. 100 g milk = 100 ml of milk
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