Home ec: Nutrients

What is the composition of protein?

CHON

What are proteins made of?

amino acids joined togethe by links

What are the classifications of protein?

High biological value (HBV) and low biological value (LBV)

What are the sources of animal protein?

Meat fish eggs milk cheese yoghurt

What are the sources of vegetable protein?

Pecans bean lentils nuts cereals

RDA of protein

1g per kg of body weight

2 advantages of vegetable protein/ LBV

Less saturated fat

More cellulose

Main function of protein

growth and repair of body cells

What is composition of fats (lipids)?

CHO

What are fats made of?

glycerol and fatty acids

What are the classification of fats ?

Saturated/Animal

Unsaturated/Plant

Sources of saturated fats

Butter, meat, eggs, cheese and cream

Sources of unsaturated fats

Oily fish, veg oils, nuts and cereals

2 Dangers of eating too much fat?

Obesity Build of of cholesterol = high blood pressure,

strokes and heart disease

Benefit of unsaturated fats

helps reduce the risk of heart disease

3 Functions of fats? Provide,prevent, protects

Provide heat and energy

Prevents heat loss

Protects delicate organs

Composition of carbohydrates

CHO

Classification of carbohydrates

sugar, starch, cellulose (fibre)

Sources of carbohydrates

Sugar = sweet foods

Starch = potatoes , cereals , pasta

Cellulose = veg,fruit,whole grain cereals, seeds + nuts

RDA for carbohydrates

130 grams per day

3 Functions of carbohydrates.

Provide heat and energy

Extra carbs stored as fat = insulation and prevent heat loss

Cellulose aids digestion by peristalsis

What are the classification of vitamins?

fat soluble and water soluble

What are the fat soluble vitamins?

A, D, E, K

What are the water soluble vitamins?

B and C