April 11: Calories - The Energy Basis of Nutrition Flashcards
Why is protein necessary in the diet?
Because it is a source of nitrogen and the 9 essential amino acids.
Recommended Daily Allowance (RDA)
Value designed to meet the needs of nearly all healthy people in the population
What is the best way to measure protein loss?
Through nitrogen
What is the RDA of protein for adults?
0.8 grams of protein per kilogram of body weight
What the factors that change relative protein requirements?
Growth, pregnancy, injury & illness, exercise
What is the order of relative protein requirement needs at varying life stages from greatest to least?
Infant > child > adult
Daily value (DV)
Meant to be a one-size-fits-all, for if a person was consuming a 2,000 calorie diet.
What is the daily value for protein and what does it mean?
It is 50 grams, considering you are consuming a 2,000 calorie diet.
How to calculate the percent daily value for protein
G of protein/50 g * 100% = percent daily value protein
50g is the daily value
What is a complete protein?
A complete protein contains all 9 essential amino acids in amounts proportional to need and is digestible
What is an incomplete protein?
An incomplete protein is low in one or more of the 9 essential amino acids in amounts proportional to need
Protein efficiency ratio
An indirect measurement of protein quality
Could be a value like 1.1, 2, or 4.5. A higher value means a higher protein efficiency ratio
What does EAA stand for?
Essential amino acid
What does NEAA stand for?
Non-essential amino acid
Limiting amino acid
The EAA in a food protein that is in the lowest amount relative to need. All incomplete proteins have a LAA
