How does the food label express nutrient content in a relation to set of standard value?

The food label expresses nutrient content in relation to a set of standard values through the use of Percent Daily Value (%DV). The %DV is a measure that indicates how much of the recommended daily intake of a nutrient is provided by one serving of the food.

The %DV is based on the Reference Daily Intakes (RDIs) established by the Food and Drug Administration (FDA). The RDIs are a set of recommended daily intakes for essential nutrients that are based on age, gender, and activity level.

The %DV is calculated by dividing the amount of a nutrient in one serving of the food by the RDI for that nutrient and then multiplying by 100. For example, if a serving of food contains 10 grams of protein and the RDI for protein is 50 grams, then the %DV for protein in that serving of food would be 20% (%DV = 10 grams/50 grams * 100).

The %DV is a helpful tool for consumers to quickly and easily compare the nutrient content of different foods. By comparing the %DV of different foods, consumers can make informed choices about which foods to eat to meet their nutritional needs.