Quiz on Chapter 7 New Preservation Techniques

What is the primary difference between thermal and non-thermal processing?

• Thermal processing uses heat, while non-thermal does not.

• Non-thermal processing is more expensive than thermal processing.

• Thermal processing is faster than non-thermal processing.

• Non-thermal processing is only used for liquids.

Which of the following is NOT a type of ionizing radiation used in food irradiation?

• Gamma rays

• Beta rays

• Alpha rays

• X-rays

What is the main advantage of food irradiation?

• It requires high temperatures.

• It can sterilize seafood and meat.

• It is only effective on fruits.

• It changes the flavor of food.

How does high oxygen modified atmosphere packaging (MAP) differ from low oxygen MAP?

• Low oxygen MAP has more carbon dioxide.

• Low oxygen MAP is used for fruits.

• High oxygen MAP has more nitrogen.

• High oxygen MAP is better for red meat.

What is the process of ohmic heating?

• Heating food using steam.

• Heating food in a microwave.

• Heating food by passing electricity through it.

• Heating food using hot water.

Which of the following is a traditional method of food preservation?

• Pulsed electric field

• Irradiation

• Pulsed light technology

• Oscillating magnetic field

What is the main purpose of modified atmosphere packaging?

• To reduce the cost of packaging.

• To add chemical preservatives.

• To maintain visual and nutritional appeal.

• To increase the weight of food products.

Which innovative non-thermal method uses high-intensity pulsed electric fields?

• Pulsed light technology

• Pulsed electric fields

• Oscillating magnetic fields

• Ohmic heating

What is the effect of irradiation on microorganisms?

• It destroys their cell membranes.

• It only affects their color.

• It has no effect on them.

• It enhances their growth.

Which gas is primarily used in high oxygen MAP?

• Nitrogen

• Helium

• Carbon dioxide

• Oxygen