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what are the fat soluble vitamins

ADEK

what are the properties of fat soluble vitamins

• found in foods containing fat

• can be stored in the body for several months

what are the water soluble vitamins

b,c

what is the proper name for vitamin c 

ascorbic acid 

what are the different forms of vitamin A

retinol, beta- carotene 

what are the different forms of vitamin D

cholecalciferol and ergocalciferol

what is the pure form of vitamin A and where is it stored 

retinol which is easily absorbed and is stored in the liver 

what is beta carotene

the other form of vitamin A which is not easily absorbed and is converted to retinol in the lining of the small intestine.

what are the properties of retinol (Pure vitamin A)

• a yellow fat soluble alcohol that is insoluble in water 

• destroyed by oxygen

• heat stable but affected by prolonged high temperatures

properties of beta carotene

• a yellow/ orange fat soluble oil that insoluble in water

• heat stable but affected by prolonged high temperatures

• unaffected by oxygen

sources of retinol (Pure vitamin A)

retinol is found in plant sources such as eggs, butter and milk

sources of beta carotene

found in yellow, green and orange fruit and vegetables such as carrots, tomatoes and leafy greens

give two biological functions of vitamin A

• vitamin A helps maintain healthy skin and mucous membranes of the body

• vitamin A also aids the growth and development of children

what are deficiencies associated with vitamin A

• night blindness (due to a lack rhodopsin manufactured by vitamin A)

• stunted or delayed growth in children leading them to be smaller in height for their age

what is the (RDA)/ reference intake (RI) of vitamin A for Children

• 400- 500 micrograms

what is the (RDA)/ reference intake (RI) of vitamin A for teenagers/ adults

600- 700 micrograms

what is the (RDA)/ reference intake (RI) of vitamin A for pregnancy 

700 micrograms

what is the (RDA)/ reference intake (RI) of vitamin A for lactation

950 micrograms