When buying canned food, pay attention to product packaging and observe product form

As canned food has metal packaging, glass bottle packaging, flexible packaging and other packaging forms, normal metal cans should have a complete shape, no deformation, no damage, no rust spots, and the bottom cover should be concave; the center of the metal cover of the glass bottle can should be slightly Depressed downwards, the contents should be intact when viewed through the bottle, the soup should be clear and free of impurities. Otherwise, it is not suitable to buy.

How to store canned food after opening

Canned meat, poultry, and aquatic animals are rich in nutrients, and microorganisms are easy to grow and multiply. After opening the can, the meat and soup in the can are in contact with the air and are easily contaminated by microorganisms in the air. Proper storage of the remaining cans will cause the proliferation of microorganisms and lead to the deterioration of the cans.

Canned food refers to the food that meets the requirements of commercial sterility after processing, canning, sealing, sterilization, cooling, or aseptic canning of raw materials that meet the requirements, and usually can be stored for a long time at room temperature without adding preservatives.

Canned food originated in the early 19th century. In order to ensure the demand for food supply, Napoleon's army in France offered a huge reward. Frenchman Apel invented a processing technology that can keep food from deteriorating for a long time, and then changed it from military use to civilian use. And gradually popularized and continued to this day.

Oyster sauce is a seasoning made from oysters (oysters). Oyster sauce is a traditional umami seasoning commonly used in Guangdong, and it is also one of the largest sauces. It uses oyster oyster cakes known as "sea milk" as the raw material. It is cooked to extract the juice and concentrate, and it is refined with auxiliary materials. to make.

Oyster sauce is delicious, rich in oyster fragrance, moderately viscous, and has high nutritional value. It is also the main ingredient of traditional Cantonese cuisine such as fresh mushroom beef in oyster sauce, green vegetables in oyster sauce, and noodles in oyster sauce.

Production

Many people think that oyster sauce is a kind of fat. In fact, like soy sauce, oyster sauce is not fat, but a kind of seasoning. A soup made from oyster sauce (dried oysters) is filtered and concentrated into oyster sauce. It is a nutritious and delicious seasoning. There are many procedures for oyster sauce. The most important step is to boil fresh oysters to the desired viscosity with water. This step is also the most time-consuming procedure. The high-quality oyster sauce should have the umami taste of oysters. Oyster sauce is generally added with MSG, and there are also vegetarian oyster sauces made with shiitake mushrooms (a type of shiitake).

According to data from the National Bureau of Statistics, as of the end of December 2019, the number of enterprises above designated size in my country's food industry reached 8,291. Among them, the number of loss-making enterprises was 1241, with a loss of 14.97%, and a decrease of 1.54 percentage points from the previous month. In addition, the total loss of my country's food industry from January to December 2019 was 11.17 billion yuan, a cumulative decrease of 23%.

In 2019, the output of major foods in my country's food industry has shown an upward trend. According to data, the output of edible vegetable oil from January to December 2019 was 54.218 million tons, a cumulative increase of 1.0%; the output of finished sugar reached 13.565 million tons, a cumulative increase of 14.8%; the output of fresh and refrigerated meat was 28.175 million tons, a cumulative increase of 0.9%; The output of products reached 27.194 million tons, a cumulative increase of 5.6%.
China's main food production and growth rate from January to December 2019