Lactase and Enzyme Applications in Food

The video discusses the role of enzymes, particularly lactase, in technology and food production. It explains lactose intolerance and how lactase helps break down lactose into glucose and galactose, making dairy products more palatable and digestible. The video also covers the benefits of using lactase in ice cream and cheese production, such as enhancing sweetness and texture. Additionally, it introduces the concept of immobilizing lactase to prevent contamination and mentions other enzymes like pectinase used in fruit juice production.

What is the main sugar found in milk that affects lactose-intolerant individuals?

• Sucrose

• Fructose

• Lactose

• Maltose

Which enzyme is responsible for breaking down lactose into simpler sugars?

• Lactase

• Lipase

• Amylase

• Protease

What are the two monosaccharides that make up lactose?

• Fructose and Maltose

• Galactose and Sucrose

• Glucose and Galactose

• Glucose and Fructose

Why do food manufacturers use lactase in ice cream production?

• To make the ice cream less sweet

• To add more lactose

• To increase the fat content

• To enhance sweetness and improve texture

How does breaking down lactose affect the texture of ice cream?

• It makes it more gritty

• It makes it smoother and creamier

• It makes it more watery

• It makes it harder

In cheese production, why is lactase beneficial?

• It makes the cheese less flavorful

• It speeds up the fermentation process

• It slows down the fermentation process

• It adds more lactose to the cheese

What is one method of incorporating lactase into milk products without leaving the enzyme in the final product?

• Adding it directly to the milk

• Using immobilized lactase on a surface

• Mixing it with sugar

• Heating the milk to high temperatures

What is the advantage of using immobilized lactase in milk processing?

• It increases the lactose content

• It adds more enzymes to the milk

• It makes the milk sour

• It prevents contamination with lactase

Which enzyme is used in fruit juice production to maximize juice extraction?

• Lactase

• Pectinase

• Amylase

• Protease

What is the primary benefit of using pectinase in fruit juice production?

• It changes the color of the juice

• It makes the juice thicker

• It increases the amount of juice extracted

• It adds more sugar to the juice