At present, the world's total sales of canned products have reached 90 million tons, and there are 3500 varieties. Canned food has accounted for about 1/4 of the commonly used foods in Europe and the United States.

 

In recent years, with the development of nutrition science, materials and packaging technology, new cans with different shapes and forms have been developed, breaking the monotonous situation of the past varieties and making canned products develop towards nutrition, practicality and novelty.

 

Rice cans. Thailand has recently launched a New Rice canned product to the international market. The method of making the rice is: soak the rice in boiling water, soak it in cold water and dry it before rice is cooked, then add seasoning to the can and seal it, and then place the can in a certain pressure steam for a period of time. After this series of processing, the semi-cooked rice sealed in the can becomes rice, each grain of rice is very well-cooked, can be eaten, and like other cans, can be stored for a long time.

 

Sunshine canned food. Scientists at the University of Tokyo in Japan have made a canned sunlight that consists of a substance that can store sunlight. When heat is needed, a catalyst containing silver salts is added to radiate the accumulated heat, a novel product for warm food in winter and refrigerated beverages in summer.

 

Fire canned food. The Nordic region is a good place for winter sports, and canned food from a Finnish food company is popular. The cans are filled with solid alcohol. When the cans are opened and ignited, the blue flames leaping out of the cans can be used for heating or cooking food. The cans are smokeless, harmless, portable and suitable for winter camping, sports and hot food for tourists.

 

Leaves canned leaves. This is a canned food made in Japan. As soon as the can is opened, it will float out of the thick leaves fragrance, secrete the heart, refresh the mind, can make people forget fatigue in the intoxicated taste, ease tension, beneficial to balance psychology.

 

Keep fresh cans. Canned food is generally processed, but the United States has a kind of preservation canned food is directly sealed into the cans, can maintain a long time without deterioration, can be opened regardless of color, fragrance, taste can be comparable to fresh.

 

Preserve the canned wine. In order to solve the problem of long-term preservation of wine after opening the bottle, Ellis Food Company has developed a kind of canned wine can be stored at will. The central bulge of the jar is a hollow tube with a snail tip that penetrates the cork. If you pull up the handle at the edge of the jar, the hollow bar will open automatically and the wine will flow out of the jar. At the same time, the tank can be added to the special gas (pure argon and carbon dioxide and water vapor mixture) through the standby pipe into the bottle, so the outside air can not enter the tank. This can keep wine open for a longer period of time.

 

The canned self made hot sake. Auto-heated canned food has become quite popular in Europe and the United States. Recently, Japan introduced a kind of self-heated sake canned food and led the way. One fifth of the lower part of the can is sandwiched with quicklime and a small packet of water sealed in a plastic film. Before drinking, just use a "spare" plastic stick to poke into the lower hole, the water will immediately mix with lime and produce a lot of heat. It takes only 3 minutes to warm a can of sake to 50 degrees.

 

Effective canned food. At present, some western countries popular curative effect canned, the vast majority of low-calorie so-called "bodybuilding food". For example, low-carbohydrate cans for diabetics, low-sodium cans for patients with hypertension, heart disease or kidney disease, low-calorie cans for obesity treatment, and high-energy cans, high-cellulose cans. These canned products of different curative effects are very popular in the market.

 

Self heating canned food. People always expect to be able to cook food conveniently at any time and anywhere. A Japanese food company has launched a food called "super cooked self heated canned food". It is the same size as ordinary large size tin, but it contains metal redox reaction heating device inside. When eating, just add a little cold water to the pot, and then insert the key, you can automatically heat the cooking food in 1-2 minutes. This convenience food is especially suitable for picnic and field operations.

 

Self cooked instant noodle can. Japan's Japanese food company and Nippon Steel Corp have developed a canned instant noodle that can be heated automatically. The metal oxidation mechanism is used to make the freeze-dried noodles in the can cook in 5 minutes, which is convenient for outdoor workers and tourists to eat.

 

Canned snacks. The Japanese have the habit of using tea in the morning and drinking tea in the afternoon. In order to make it convenient, they produce canned custard powder, water goat soup, pudding and other snacks according to different customs and habits in different parts of the country.

 

Ice canned gas. This is a popular canned food in European and American markets with chemicals that can be refrigerated. When used, pour out a little of each of the two chemicals, mix them with a little cold water, and instantly produce cold air for frozen drinks and food. The refrigeration temperature of ice gas can reach 15 degrees below zero.

 

One person can eat canned food. This kind of canned food is a "one-man nutrition" product recently introduced by Japanese food manufacturers. Its biggest characteristic is just enough for one person to eat, and the cooking is very convenient. It is very popular with students and the elderly. At present, Japan has developed over one hundred canned food for one person.