ÿ Vitamin A (“Retinol”)

F. Other LipidsF. 2. Other Lipid Vitamins:

• Obtained from liver, egg yolk or milk products.

• FUNCTIONS:

• Can be synthesized from -carotene (a 40-C precursor).

• 3 forms: retinol (stable), retinal and retinoic acid.

•Signaling (retinol and retinoic acid).

•Light-sensor (retinal).

ÿ Vitamin E (“ α-Tocophero”l )

• Obtained from vegetable oils, nuts and geen leafy vegetables.

• FUNCTIONS:

• Several forms, α-tocopherol is the most active.

•Role in cancer and cardiovascular therapy?

•Antioxidants.

ÿ Vitamin K (“Phylloquinone”)

• Obtained from plant oils.

• Involved in blood clotting.

• FUNCTIONS:

ÿ You should know the definition and basic

functions of the lipid Vitamins.