Which sterilization method is used for food or may be used for other materials?

Which sterilization method is used for food or may be used for other materials?

• A. Autoclave
• B. Ethylene oxide
• C. Gamma irradiation
• D. Dry heat

Answer: (C)

Gamma irradiation lets you sterilize foods while they’re in sealed packaging, and it’s also widely used for other materials such as medical devices and pharmaceuticals. This method uses ionizing radiation to inactivate microorganisms without applying heat, so the food’s texture and taste are often better preserved than with high-temperature processing. It penetrates packaging and reaches all surfaces, making it effective for a variety of products that can’t withstand moisture or heat. Autoclaving relies on moist heat under pressure, which would cook or damage many foods and their packaging, so it isn’t suitable for food sterilization. Ethylene oxide is great for heat-sensitive items and packaging materials but can leave toxic residues, so it’s not typically used directly for foods. Dry heat requires long exposure at high temperatures and is generally impractical for foods and many sensitive materials. Thus, gamma irradiation stands out as the method that can sterilize foods and may also be used for other materials.

Gamma irradiation lets you sterilize foods while they’re in sealed packaging, and it’s also widely used for other materials such as medical devices and pharmaceuticals. This method uses ionizing radiation to inactivate microorganisms without applying heat, so the food’s texture and taste are often better preserved than with high-temperature processing. It penetrates packaging and reaches all surfaces, making it effective for a variety of products that can’t withstand moisture or heat.

Autoclaving relies on moist heat under pressure, which would cook or damage many foods and their packaging, so it isn’t suitable for food sterilization. Ethylene oxide is great for heat-sensitive items and packaging materials but can leave toxic residues, so it’s not typically used directly for foods. Dry heat requires long exposure at high temperatures and is generally impractical for foods and many sensitive materials.

Thus, gamma irradiation stands out as the method that can sterilize foods and may also be used for other materials.