Canned food plays an important role in daily life. However, there are some misunderstandings about the manufacture, preservation principle, nutritional value, how to distinguish the quality of canned goods and storage methods. Today, Xiaobian will introduce canned food for you in detail.

First, there are four misconceptions about canned food.

 

Myth: there are many preservatives in cans, which are harmful to human health.

Truth: Cans can be preserved for a long time without deterioration, thanks entirely to sealed containers and strict sterilization, and has nothing to do with preservatives. The reason for canning is very simple: first, the raw material is fully heated, all the microbes are killed, and the packing tank is heated and germicidal; then the aseptic food is installed in the aseptic container and sealed in the aseptic container. Finally, the heat is sealed and sterilized. After cooling, the empty gas in the top clearance of the container will shrink to produce negative pressure, originally sealed. The bottle can't be opened anymore, and the bacteria outside can't go in. After these processes, food is naturally not corrupted, and there is no need for any preservatives. According to Hao Yu, the Secretary General of the Chinese food industry standardization technology committee, "preservatives in cans" are in fact a prejudice against the canned food and misleading to consumers.

Myth two: canned food is convenient food, which is no different from instant noodles. Only hunger, no nutrition.

Fact: the processing procedure of canned food is very simple. More importantly, the heating temperature of canned food is not too high, sometimes lower than that of cooking at home. So, to a certain extent, the loss of canned food is less than that of family cooking. In general, the processing temperature of canned meat canned meat and seafood can not exceed 120 degrees centigrade by pasteurization. The processing temperature of vegetables and fruits can not exceed 100 degrees C; and our daily cooking temperature will easily exceed 200 degrees C.

Misunderstandings three: canned materials are made of leftover materials.

Fact: in fact, canned goods are of high quality and good appearance.  For example, canned fruits are mostly packaged in glass bottles or transparent soft packages, you can see the beautiful and complete oranges, yellow peaches, hawthorn, pineapple and so on. As for cans that can't see the "content," if the quality of the raw materials used is questionable, it is likely to affect the quality of a number of manufacturers will take this risk. Finally, China is the world's largest producer of canned goods, exports a large number of products to the United States, the European Union, Japan and other countries in the world, exports of 3 million tons. These countries are particularly strict with food censorship, and the fact that Chinese cans are so popular on the international market confirms the quality of canned goods.

Misunderstanding four: canned food, how safe and nutritious, as long as it is processed, is always not fresh!

Fact: first, the raw materials used for canned food are fresh. To make canned food, in order to pursue lower cost and better taste, we will choose the freshest raw materials in the most suitable season.  Moreover, in order to save costs, regular Canners have their own base of raw materials, and the production line is built nearest to the base. In this way, it is equivalent to "picking up and doing" from its own backyard, greatly reducing the process of picking, transporting and processing.

Although it's easy to buy "fresh" fruits from all over the country, they just look fresh and nutrients are losing. Because any fruits and vegetables continue to "breathe" after picking, and some nutrients will continue to decrease. And the whole process of fruit canned from raw material to processing is not more than 6 hours. High temperature heat treatment will stop or slow down the chemical reaction of nutrient loss and maintain the freshness and nutrition of the food. Take the yellow peach for example, 1 days after picking, vitamin C will lose 30%, while the yellow peach can only lose 10%., so the fruit canned fruit is more fresh than the long haul of "fresh" fruit.

Two. Different groups of people choose different cans

Chinese nutrition experts believe that canned food is best eaten only two or three times a week, and has little emphasis on people.

Children can eat canned fruit. Studies have shown that canned fruits and fresh fruits have little nutritional difference, but because of the high sugar content, it is not suitable for the elderly, but it is suitable for children. First, canned fruit is soft and suitable for children with poor digestive function. Secondly, many very sour fruits, such as yellow peach, are sweet and delicious after processing. Actually, the fruit yogurt that we eat is also the canned fruit, so the taste will not change and it will not deteriorate easily. Canned fruit can not only be eaten directly, but also easily make delicious: yellow peach yoghurt, ice sugar Sydney Tremella soup, sugar water Hawthorn mixed with cabbage, etc.

The old man can get a canned fish. Fish are rich in nutrition, but they are also troublesome, but because of thorns, the elderly are not easy to eat. The fish canned can solve the trouble well. Because the bones of the canned fish are crisp and the calcium is dissolved in large quantities, it is easier for the elderly to eat.

The housewife picked up a new canned canned. Housewives can buy Novelty cans of "rare" ingredients, and can make "innovative" dishes in simple ways, such as asparagus, chickpeas, olives, etc.

The office worker is suitable for canned vegetable. Working people have a fast pace of life and do not have enough time to eat enough vegetables. Vegetable canned food is very convenient, with the ignition leg, eggs, meat filling, can make a balanced meal, such as corn green bean ham fried rice, millet soup, water chestnut balls and so on.

Three. Different materials, different canned nutrition

Different nutrients have different properties. When food is canned, their vitamin content changes.