Lipids are oily compounds found in food and the body that serve several important functions. They include fats, oils, waxes, steroids, and phospholipids. Fats and oils are composed of glycerol bonded to fatty acids. Fats are solid at room temperature while oils are liquid. Phospholipids are a major component of cell membranes and contain a phosphate group and two fatty acids. Steroids include cholesterol and various hormones. Lipids are essential for storing energy, insulating the body, and forming cell membranes.

1. Lipids
Presentor: GARCIA, Mary

2. Lipids

3. WHAT IS
LIPIDS?
01

4. ❖ Make food oily
❖ Keeps our body warm
❖ prevent the watery component of the cell
from leaking out.

5. What does lipids include?
FATS OILS WAXES STEROIDS &
PHOSPOLIPIDS

6. FATS and OILS
THREE MAIN TYPES of LIPIDS
01
02
03
PHOSPHOLIPIDS
STEROIDS

7. Serves as nutrient reserves in
animals and plants.
FATS and OILS ➔ Corn oil, canola oil and olive oil
➔ This lipids has yellowish color and are in
liquid form at room temperature.
Lard and butter are made from typical
animal fats
➔ They usually have whitish color and are
solid at room temperature.

8. GLYCEROL
TWO BASIC UNITS of FATS and OILS
01
02
FATTY ACIDS

9. A three - carbon alcohol with three
hydroxyl groups attached to each
carbon.
GLYCEROL

10. Are long-chain aliphatic carboxylic acid
products which result from hydrolysis of
lipids
FATTY ACIDS
➔ short, medium, or long-chain fatty acid

11. These are the three fatty acids are joined
to one molecule of glycerol, the fats and
oil of it are called TRIGLYCERIDES.
TRIGLYCERIDES
➔ Animals are composed high proportions
of saturated fatty acids in which all the
carbon atoms of the fatty acids are
bonded to at least two hydrogen atoms.

12. It consists a glycerol molecule, a
phosphate group, and two fatty acids.
PHOSPHOLIPIDS
➔ Phosphate group are water soluble while
the rest of the molecule is insoluble in
water.
➔ Cell membrane surrounds every cell that
are made of bilayer of phospholipids.
➔ Lecithin, cephalin, plasmalogen, and
lipositol

13. Are organic compound with four rings
arranged specific configuration.
STEROIDS
➔ Sterols and terpenes
➔ STEROLS - such as cholesterol,
androgens, ans estogens(sex
hormones), adrenal corticosteroids,
ergosterol, and 7 dehydrocholesterol