What is "canned food"

Canned food refers to food that meets the requirements of commercial sterility and can be stored for a long time at room temperature by processing, preparing, canning, sealing, sterilizing, cooling, or aseptically filling raw materials that meet the requirements. The process technology of canned food has two key features: sealing and sterilization.

Origin of canned food

In 1809, the world trade was prosperous. Seamen who lived on ships for a long time fell ill because they could not eat fresh vegetables, fruits and other foods, and some suffered from severe life-threatening scurvy.

Why canned food lasts longer without preservatives

In the 1970s and 1980s, it was such a joy and pride to be able to eat tomato and braised noodles in winter! At that time, many people bought tomatoes home, made tomato paste, and saved them for winter.

The flavor and nutrition of tomato sauce

Lycopene is a carotenoid that makes tomatoes appear red and has antioxidant effects. The antioxidant effect is even higher than that of beta-carotene. A 6-year Harvard study of 48,000 male doctors found that those who ate more than twice a week of tomatoes and ketchup had a 21% lower risk of prostate cancer compared to those who didn't.