Protein
Protein Protein is important in our food because it is the
largest part of the Body cells, Body tissues andBody fluids
Protein has multiple functionsBuild and repair body
tissueMaintain cell growthEnergy Aid in formation of enzymes
Hormones and antibodies
Must be supplied dailyConstantly needed to replace wear and tear
of tissue and keep up protein concentration in the blood serum
Protein provides energyCan take the place of some fat and
carbohydrateExcess protein converted to energyStored as fat
Fats and carbs cannot replace proteinNeeded to replace wear and
tear of tissue and keep up protein concentration in the bloodExcess
protein, once converted to energy, cannot convert back to
protein
The best animal sources of proteinMilkEggsFishPoultryRed
Meat
Excessive ProteinConverted back to energyMay do more harm than
goodNot necessary to eat a lot.
Amino AcidsBuilding Blocks from which new proteins are
made.There are 22 different ones, but 9 are essential for good
health.
Complete ProteinAny food that has all 9 essential amino
acids.All animal proteins are classified as complete
proteins.Support growth and maintenance of body tissue
Complete protein plant sourcesSoybeans (tofu)Quinoa
Incomplete Amino AcidsProvide normal maintenanceDo not support
growthSome plant foods contain protein, but not all essential amino
acidsBeans Nuts and grains legumes, peanut butter, peas
Eat a variety of foodMake certain the body gets all the
essential amino acids.Make protein completeCombine plant and animal
foodCombining plant protein from variety of cereals and grains
Extending ProteinsChicken and RiceChili con carneMacaroni and
CheeseTuna Noodle CasseroleAlso called sparing
Which meals should have protein?Needed at all meals but
especially at breakfast to replenish amino acids used for growth
and maintenance during the night.
Protein not immediately neededExcreted by the bodyConverted to
Fat and stored in adipose (fat) tissues in body.Cannot be converted
back into amino acids4 Calories per gram
Insufficient ProteinLower ones resistance to disease,Damage
liverDeathTirednessWeight lossLack of energyStunt growthNot common
in U.S.
Protein needs influenced byAgeBody SizeQuality of the
proteinsPhysical state of the person3-6 ounces per day
