This document summarizes key vitamins and their properties, sources, functions, and effects of deficiencies. It discusses vitamins A, B, C, D, folate, niacin, and beta-carotene. Vitamin A is a fat-soluble vitamin found in foods like halibut and butter. It is necessary for production of collagen and maintaining healthy membranes. A deficiency can cause night blindness or rough, dry skin. Vitamin C is a water-soluble vitamin that is very unstable and is destroyed by alkalis. It is found in foods like blackcurrants, kiwis and peppers. It is necessary for collagen production and acts as a powerful antioxidant. A deficiency can cause slowed wound healing or

1. VITAMINS
A B C D

2. Vitamin A
Properties sources Functions Effects of difincey
1. Yellow fat soluble
alcohol
Halibut Necessary for the
production of
collagen
Night blindness
eyes unable to
adjust
2. Insoluble in water Margarine Maintains healthy
lining membranes
Reduce resistance
of infection
3. Heat stable Butter Keeps skin healthy Rough dry skin
4. Can be destroyed
by oxygen
Cheese Helps to regulate
growth
Retard growth

3. Vitamin B niacin
Properties Sources Functions Effects of difincey
1.Water soluble Meat Growth tiredness
2. Stable to heat Offal Energy release from
food
If severe pellagra
witch causes
dementia
3. Stable to acids Tuna Promotes healthy
skin

4. Vitamin B folate/ folic acid
Properties souces Functions Effect of difincey
1. Water soluble Wheat germ Helps to prevent
newel tube in
unborn babies
Increase risk of neural tube
defect
2. Some loss in cooking Spinach Involved with b12
in the formation of
red blood cells
Amina and fatigue in young
children
3. Stable to acids milk Helps maintain the
immune system

5. Vitamin D
properties sources functions Effects of difincey
1. Fat soluble Fish liver Necessary for the
absorption of
calcium
Rickets is a bone
disease
2. Insoluble in water Oily fish Regulates the
balance of calcium
Ostomalacia is a
bone disease
3. Most stable
vitamin
Liver Prevents rickets Tooth decay
4. Unaffected by an
antioxidant
butter Vitamin d helps
maintain strong
bones
Fragile bones

6. Vitamin c
properties sources functions Effects of difincey
1. Sweet taste Blackcurrants Necessary for the
production of
collagen
Collagen
production will be
affected
2. Water soluble Kiwis Helps prevent
bruising
Wounds slow to
heal
3. Very unstable Peppers Powerful
antioxidant
Anaemia due to
poor iron
absorption
4. Destroyed by
alkalis
cabbage

7. Beta-carotean
Properties sources Functions Effects of difincey
1. Bright yellow Carrots Antioxidant witch
protects the body
Beta-carotean is not
an essential nutrient
2. Fat soluble Spinach
3. Insoluble in water Tomato's
4. Effective
antioxidant
Kale