Introduction to Human Nutrition

The Vitamins 147

O

CH

3

HO H^3

C

CH

3

CH

3

O

CH

3

HO

CH

3

CH

3

O

HO H^3

C

CH

3

CH

3

O

HO

CH

3

CH

3

O

H

C 3

H

C 3

CH

3

CH

3

O

CH

3

HO

CH

3

CH

3

O

HO H^3

C

CH

3

CH

3

O

HO

CH

3

CH

3

α

-Tocopherol

β-Tocopherol γ

-Tocopherol δ-Tocopherol

α

-Tocotrienol

β

-Tocotrienol

γ-Tocotrienol δ

-Tocotrienol

Figure 8.5

The vitamin E vitamers, tocopherols and tocotrienols.