สไลด์สารชีวโมเลกุลเรื่องไขมัน ><

1. Lipid

2. The importance of lipid
- Provide energy to the body
- The absorption of vitamins A, D, E, K.
- A part of cells and tissues in the body.
- Prevents heat loss . Moisturize dry skin does
not break
- Provides essential fatty acids to the body.
**Lipid 1 g.  energy 9 kcal.

3. Lipid
Glycerol
Fatty acid
Fatty acid
Fatty acid+
Triglyceride
+
3H2O
=>
C,H,O ; H:O = 2:1

6. Ex. the types of lipid
Simple lipid Lipid complex Derived lipid
Fat & Oil
- Phospholipid
- Glycolipid
- Sex hormones
- Bile salt

7. Fatty Acid
Saturated Fatty Acid
Unsaturated Fatty Acid

8. Saturated Fatty Acid
Structure : CnH2n+1COOH
Boiling point : High
(Fat ;Animals )
Characteristic
- Single bond
- Straight chain 
Ex. Palmitic acid,
Stearic acid

9. Unsaturated Fatty Acid (Oil ; Plants)
Structure : CnH2nCOOH
Boiling point : Low
Ex. Linoleic acid,
Oleic acid , Oil exept for
coconut and plam oil.
Characteristic
- Double bond 
- Non-straight chain

10. Lipid Test
Drop of substances falls on paper if it is lipids it
makes a mark which is bright and translucent
(lets light through)

11. Lipid Test
Lipid + NaOH  soap
boiled
+ ->>
boiled

12. Fat Reaction
Lipid + Water  Carboxylic acid + Glycerol
Hydrolysis

13. Oxidation
Reaction racid fat
Unsaturated lipid + Oxigen  Aldehyde
**Aldehyde = “Substances that cause rancidity.”