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)