Calculating & evaluating nutrient intakes of populations

Question 1

What are some sources of error when using a bomb calorimetry?

Answer 1

• food sample is destroyed in the process
• metabolism is less efficient than this process

Question 2

What are possible sources of error in measuring food composition?

Answer 2

• instrument error
• method error
• personal errors
• natural variations in samples

Question 3

What are some natural variations ins samples that can be sourced of error in lab analysis?

Answer 3

• species/ variety
• processing - cooking, storage time
• environment - harvest time, region
• ripeness

Question 4

What are the different quantitative standards and who is it used for?

Answer 4

Estimated Average Requirement (EAR) - used in groups
Recommended Dietary Intake (RDI)
- used only for individuals
Estimated energy requirement (EER)
- for individuals
Adequate Intake (AI)
- used when an EAR (RDI) can’t be set
Upper Level (UL)
- used for both individual and groups

Question 5

EAR is a nutrient reference value that

Answer 5

is the basis for the calculation of the Recommended Dietary Intake