Applications of enzymes

Question 1

Enzyme lactase

Answer 1

• Used to breakdown lactose molecules
• lots of people do not produce enough lactase therefore lactose is not digested or absorbed properly (lactose intolerance)

Question 2

Why do people feel sick

Answer 2

• Because the lactose is consumed by bacteria in the gut
• Causes symptoms like nausea, cramps, and abdominal bloating

Question 3

How is the enzyme chymosin used?

Answer 3

In the cheese making industry

Question 4

How to make cheese: Step 1

Answer 4

bacteria are added to milk to aid the curdling process

Question 5

How to make cheese: Step 2

Answer 5

• The bacteria feed on the milk and produce lactic acid as a waste product
• As the lactic acid is produced, the pH of milk is lowered and the milk proteins begin to denature

Question 6

How to make cheese: Step 3

Answer 6

• The enzyme chymosin is added to hydrolyze the milk protein casein
• The hydrolysis of casein causes the milk to coagulate into semisolid cheese curds

Question 7

Effects of enzymes brewing

Answer 7

• Faster maturation of beer
• Removal of carbohydrates in light beer

Question 8

Effects of enzymes on starch

Answer 8

Production of glucose, dextrose, fructose, and glucose syrup for baking and soft-drink production

Question 9

Effects of enzymes laundry detergent

Answer 9

• Enzymes are added to laundry detergent
• More effective at removing stains such as blood, grass, milk and sweat