1 1 501C What is a Nutrient A nutrient is a chemical substance in food that helps maintain the body You need over 50 nutrients which can be divided into six groups Water Carbohydrates ID: 493317
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5.01C Nutrients
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5.01C What is a Nutrient?
A nutrient is a chemical substance in food that helps maintain the body.You need over 50 nutrients, which can be divided into six groups.
Water
Carbohydrates
Lipids (Fats)
Proteins
Vitamins
MineralsSlide2
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Water
Carbohydrates Fats Protein Vitamins Minerals
Sugars
Starches
Cellulose
The Six Classifications of NutrientsSlide3
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Proteins
Carbohydrates FatsThese Nutrients Have CaloriesSlide4
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Definition of a Calorie:
The unit used to measure
the energy value of food.Slide5
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Calories per gram:
Protein 1 Gram = 4 caloriesCarbohydrates 1 Gram = 4 caloriesFat 1 Gram = 9 caloriesSlide6
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Variables which affect
nutrient needs:1. Age 2. Gender 3. Activity Level 4. Climate 5. Health
6. State of nutritionSlide7
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Key Nutrient: Water
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Aids digestion and cell growth and maintenance
Facilitates chemical reactionsLubricates joints and cellsRegulates body temperature
Function
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Sources
LiquidsFoodBreakdown of energy nutrients
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Key Nutrient: Carbohydrates
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Function
Supplies the energy
Provides fiber
Help the body digest fatsSlide12
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Sources
Sugars: honey, jam, molasses, candy, table sugarFiber: fruits, vegetables, whole grainsStarch: breads, cereals, pastaSlide13
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Key Nutrient: Fats
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Function
Supply energyCarry fat-soluble vitaminsInsulate the body
Protect organs
Provide essential fatty acidsSlide15
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Types of Fats
Saturated: dairy products, meats, lard, coconut and palm oilsUnsaturated: fish, nuts, vegetable oils
SourcesSlide16
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The fat-like substance in found in body cells. This substance clogs arteries.
CholesterolSlide17
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Key Nutrient: Proteins
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Builds and repairs muscles and cell tissues
Helps the body make important substancesRegulates body processesSupplies energy
FunctionsSlide19
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Sources
Complete proteins: dairy products, eggs, fish, meat and poultry.Incomplete proteins: beans, grains and nuts.Slide20
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Key Nutrient: Vitamins
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Fat-soluble vitamins
dissolve in fatsare stored in fatty tissues of the bodyWater-soluble vitaminsdissolve in water
are not stored in the body
Function
Vitamins are divided into two main groups
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Nutrient
Functions
Sources
Vitamin A
Keeps skin and mucus membranes healthy
Prevents night blindness
Promotes growth
Butter, dark green and yellow fruits and vegetables, egg yolk, liver, whole and fortified milk
Vitamin D
Builds strong bones and teeth
Egg yolk; fortified butter, margarine, and milk; the sun
Vitamin E
Acts as an antioxidant to protect cell membranes
Eggs, liver, salad oils, whole grain cereals
Vitamin K
Helps blood clot
Cauliflower, egg yolk, organ meats
Fat-Soluble VitaminsSlide23
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Water-Soluble Vitamins
Nutrient
Functions
Sources
B-Complex
Helps wounds heal
Helps fight infection
Helps nervous tissue function healthy
Plays important role in breakdown of proteins fats and carbohydrates
Oranges, grapefruits, tangerines, cantaloupe, broccoli, citrus fruits, tomatoes and raw cabbage
Vitamin C
(ascorbic acid)
Keeps nervous system healthy
Releases energy from food
Helps promote healthy gums and tissues
Pork, whole grain breads and cerealsSlide24
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Key Nutrient: Minerals
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Minerals
Nutrient
Functions
Sources
Calcium
Builds bones and teeth
Helps muscles and nerves work
Milk, yogurt, cheese, salmon, dark veggies
Iron
Combines with protein to make hemoglobin. Helps cells use oxygen
Liver, spinach, raisins and molasses
Potassium
Helps nerves and muscles
Balances body water
Potatoes, bananas, prune juice and tomato products
Sodium
Helps nerves and muscle function
Salt, soy sauce, processed foods and country ham
Iodine
Promotes normal functioning of the thyroid gland
Iodized salt and salt water fishSlide26
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Food For Thought
Avoid excesses of some vitamins and minerals.To promote good nutrition and maintain good health:Eat a variety of foods from the food guide pyramid.
Drink plenty of water
Daily exercise
Seek the advice of a physician or dietician before taking supplements