Where x is the content of a nutrient in 100g food; RNI is the recommended daily intake of food nutrients; NRV is 100g, which is the ratio of the nutrient content in food to the daily intake of the nutrient.

Example: Take the food nutrient "energy" in chocolate food as the calculation object;

Where X=230 1 kJ, that is, every 100g of chocolate contains 230 1 kJ of energy; RNI =8400 kilojoules, which means that the recommended daily intake of energy for adults is 8400 kilojoules; NRV was calculated as 27%.

Nutrient reference values (NRV) is a reference standard for comparing the contents of food nutrients on food nutrition labels, and it is also a reference standard for consumers to choose foods. Nutrient reference values (NRV) can help consumers avoid excessive intake of nutrients.

Extended data

Scope of application and purpose of NRV

1, scope of application

NRV is only applicable to nutrition labels in prepackaged foods, except food for children under 4 years old and special food for pregnant women.

2. Purpose of use

Used to compare and describe the content of energy or nutrients, and used as a standard reference value when nutrition claims and zero values are used.

Detailed description of the nutrient composition table (see the figure below)

Baidu encyclopedia -nrv