Uses of immobilising enzymes

Question 1

Name an enzyme reaction involving the substrate glucose

Answer 1

An immobilised enzyme called glucose isomerase is used to convert glucose to the sweeter-tasting fructose.

Question 2

Name an enzyme reaction involving the substrate penicillin

Answer 2

Penicillin acylase is used in an immobilised form in large bioreactors to convert penicillin into new antibiotics.

Question 3

Why is it good that penicillin acylase can be immobilised?

Answer 3

As penicillin acylase is a very expensive enzyme and it can be recovered and reused to reduce costs.

Question 4

How is lactase immobilised?

Answer 4

It is immobilised in porous beads.

Question 5

What is the enzyme lactase used to convert into what?

Answer 5

It is used to convert lactose ( a sugar found in whey) into glucose and galactose.

Question 6

What are glucose and galactose used to replace in the manufacture of what?

Answer 6

These products are used to replace condensed milk in the manufacture of soft toffee and caramel.