Natural Fat (triacylglycerols)

Question 1

What are triacylglycerols

Answer 1

Esters of glycerol with FA

Question 2

What is the function of TAG

Answer 2

Major energy reserve of body

Question 3

Why we choose TAG

Answer 3

Non-polar → no need for water so can be stored in huge amounts
High energy content

Question 4

Where are TAGs present

Answer 4

Adipose tissue (under the skin)

Question 5

What are the two types of TAGs according to structural classification

Answer 5

Question 6

What is the attachment in mixed TAGs

Answer 6

Question 7

What are the physical properties of TAGs

Answer 7

Question 8

What are the chemical properties of TAGs

Answer 8

Hydrolysis
Hydrogenation
Oxidation

Question 9

Explain hydrolysis as a chemical property of TAGs

Answer 9

It is in vivo (in the body)
Breakdown by addition of water
During digestion of dietary fat in GIT
Results in free glycerol and FA

Question 10

Explain saponification as chemical property of TAGs

Answer 10

Question 11

Explain hydrogenation as a chemical property of TAGs

Answer 11

Question 12

Explain in vitro oxidation as a chemical property of TAGs

Answer 12

Question 13

What is the cause of rancidity

Answer 13

Question 14

What is the effect of rancidity

Answer 14

Question 15

Explain in vivo oxidation as a chemical property of TAGs

Answer 15

In the living cells, lipids undergo oxidation to produce peroxides and free radicals

Question 16

What do the free radical cause

Answer 16

They can damage the tissue and cause inflammatory disease, aging, cancer, and arthrosclerosis

Question 17

How to protect from in vivo oxidation

Answer 17

Antioxidants