Agriculture Reference
In-Depth Information
T A B L E 2.7. Vitamins
Concentration a
Vitamin
Common Name
Alpha-tocopherol b
Vitamin E
mg
Ascorbic acid
Vitamin C
mg
Folic acid c
One of the B vitamins
mcg
Thiamin c
One of the B vitamins, i.e., B 1
mg
Riboflavin c
One of the B vitamins, i.e., B 2
mg
Niacin c
One of the B vitamins, i.e., B 3
mg
Pyridoxine d
One of the B vitamins, i.e., B 6
mg
Cobalamin
One of the B vitamins, i.e., B 12
mcg
Pantothenic acid
One of the B vitamins, i.e., B 5
mg
Phylloquinone e
Vitamin K
mcg
Retinol f
Vitamin A
IU or mcg
Cholecalciferol g
Vitamin D
IU or mcg
a mg ¼ milligram (10 23 g), mcg ¼ microgram (10 26 g), IU ¼ International unit.
b A family of molecules, alpha being the most important.
c Part of what is called the B-vitamin complex.
d One of six forms of B 6 .
e One of two forms.
f One of a number of related compounds called retinoids.
g One of several compounds that can be converted to vitamin D in the body.
T A B L E 2.8. Water-Soluble Vitamins
Vitamin/Name a
Structure b
Function
B 1 /thiamin
Energy metabolism
B 2 /riboflavin
Energy metabolism/
vision
B 6 /pyridoxine
Amino acid and fatty
acid metabolism
Niacin/nicotinic acid
Energy metabolism
(Continued)
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