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    Home > Food News > Nutrition News > Canned food consumption tips: Do not eat canned products once...

    Canned food consumption tips: Do not eat canned products once...

    • Last Update: 2022-05-25
    • Source: Internet
    • Author: User
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    The global spread of the new crown pneumonia epidemic has had a significant impact on people's living, eating and other habits, and consumption habits have changed accordingly
    .
    The consumption concept of food purchase has also changed: the awareness of nutrition and health has increased
    .
    Canned food is favored by many consumers because of its shelf-stable properties
    .
    Recently, the China Canned Food Industry Association issued a reminder on the consumption of canned food, so that people can correctly understand canned food and consume canned food reasonably
    .

    The China Canned Food Industry Association pointed out that canned food refers to the raw materials that meet the requirements of processing, canning, sealing, sterilization, cooling, or aseptic canning, and meet the commercial sterility requirements, without adding preservatives.
    preserved food
    .

    Photo courtesy of China Canned Food Industry Association

    1.
    Canned food can achieve longer shelf life without adding preservatives

    Canned food can be stored for a long time, mainly relying on the realization of canned food processing technology
    .
    There are three key points: (1) Heating exhaust, vacuuming or filling nitrogen, nitrogen and carbon dioxide mixture, etc.
    , greatly reduces the oxygen content in the food and the container, so that the potential growth of microorganisms in the container is stagnant; (2) It is tightly sealed to block the passage of air (oxygen) or microorganisms outside the container into the container; (3) thermal sterilization, so that the potential microorganisms in the container die due to heat treatment, physical action or chemical action
    .

    Canned food is safe by sterilization and sealing
    .
    The raw materials are sterilized at high temperature to kill the microorganisms in the tank to the maximum extent and meet the requirements of commercial sterility.
    In addition, the packaging materials are usually tinplate and other packaging to isolate the external air and moisture, which can ensure the stability of product quality for a long time
    .
    Therefore, products produced in strict accordance with the canning process can achieve a longer shelf life without adding preservatives
    .

    2.
    Five points of canned food packaging containers

    Due to the particularity of canned food processing technology, canned food has very high requirements on product packaging containers, and must meet the following five elements:

    (1) Canned containers must be non-toxic: Since canned containers are in direct contact with food, they must be non-toxic to ensure food safety
    .

    (2) Good sealing: Microorganisms are the main reason for food spoilage.
    As a food storage container, it must have reliable sealing performance, so that the food will not be deteriorated due to external microbial contamination after sterilization
    .

    (3) It has good corrosion resistance: because canned food has certain nutrients, salts, organic substances, etc.
    , it is easy to decompose in the process of high temperature sterilization, thereby aggravating the corrosion of the container, in order to ensure that the food can be stored for a long time.
    , the container must have good corrosion resistance
    .
      

    (4) Portable use: It should have a certain strength and be easy to transport
    .

    (5) Suitable for industrial production: In order to improve production efficiency, reduce costs, and stabilize quality, canned food should be able to withstand various mechanical processing in the production process and meet the requirements of factory mechanization and automated production
    .

    3.
    Pay attention to product packaging and observe product form when purchasing canned food

    Since canned food has metal packaging, glass bottle packaging, flexible packaging and other packaging forms, and there are various types of canned food, the quality of canned food should be judged from the aspects of appearance, packaging, sensory quality, labeling, and brand
    .
    Normal metal cans should have a complete shape, no deformation, no damage, no rust spots, and the bottom cover should be concave inward; the center of the metal cover of glass bottle cans should be slightly concave downward, and the contents should be complete when viewed through the bottle body.
    The soup is clear and free of impurities
    .
    Otherwise, it is not suitable to buy
    .

    In addition, 1.
    Do not eat the products of the expansion tank: The expansion tank refers to the phenomenon of bulging and bulging at the bottom and top of the tin can, which is one of the manifestations of the deterioration of the can
    .
    The reason for the expansion of the can is that the sterilization of the can is incomplete, and the food inside is contaminated by microorganisms
    .
    The microorganisms reproduce on the food in the tank and produce gas
    .
    The gas accumulates to a certain extent to form the deformation of the can
    .

    2.
    Do not eat air-leak and moldy products: improper handling and bumping of canned products during storage and transportation will cause the product packaging to be deformed, air leaks at the seal of the can lid, and air leakage will cause the products in the can to come into contact with the outside air, and microorganisms will begin to Breeding, mildew is generally found after the product is opened
    .

    4.
    If the opened canned food cannot be eaten at one time, it should be properly stored

    After the canned meat is opened, if it is not eaten at one time and the remaining cans are not properly stored, it will cause the proliferation of microorganisms and lead to the deterioration of the cans
    .
    Once the canned fruits and vegetables are opened, if the can body is made of tinplate, the tinplate will easily oxidize when it encounters the air, which will destroy the vitamin C in the food
    .

    Therefore, once the canned meat or fruits and vegetables are opened, if they cannot be eaten at one time, the remaining canned food should be poured into enamel, ceramic or plastic food containers, sealed with plastic wrap for temporary storage, or stored in the refrigerator, but must be eaten as soon as possible.
    finished
    .

    If you can't finish canned sugar sauce and jam at one time, you should cover the mouth of the can or pour it into other containers, seal it with plastic wrap, and eat it within 2 to 3 days (you can store it for a few more days in autumn and winter).
    Because the sugar content of this type of canned food is generally 40% to 65%, it has a preservative effect and is not easy to deteriorate
    .
    When this type of canned food is stored, the can body can be covered and kept in a sealed state as much as possible, or it can be poured into other containers with lids and stored in the refrigerator, but it should not be stored for a long time without eating
    .

    The China Canned Food Industry Association reminds that residents must first have a plan when buying canned food, and make different choices according to different regions and different family situations, and should not purchase blindly
    .
    In addition, it is also necessary to pay attention to nutritional matching and achieve nutritional balance
    .

    Introduction of canned food:

    1.
    Canned meat

    Luncheon meat is very versatile, breakfast: luncheon meat sandwich/scratch cake/egg cake, lunch & dinner: luncheon meat fried rice/fried noodles/fried cake; can be used with Chinese hot pot, Japanese rice ball, European salad, and Italian >
    .

    Luncheon meat is delicate in texture, fresh in taste, and fragrant in flavor.
    The main nutrients are protein, fat, carbohydrates, niacin, etc.
    The content of minerals sodium and potassium is high, which has the effect of improving immunity, appetizing and digesting food
    .
    In addition, braised beef, braised pork and canned lamb scorpion hot pot can also be purchased according to personal preferences
    .

    Photo courtesy of China Canned Food Industry Association

    2.
    Canned vegetables

    Canned vegetable food is processed with fresh and good quality raw materials, basically retaining the original nutrients of its high-quality part, although there is a slight loss of vitamin C, the proportion of nutrients contained in unit mass has increased, which is more conducive to digestion and absorption
    .
    Canned vegetables include: canned asparagus, canned tomato sauce, canned mushrooms, canned bamboo shoots and canned cucumbers
    .

    China is a major producer and exporter of canned asparagus
    .
    Asparagus enjoys the reputation of "King of Vegetables" in the world.
    It is rich in various amino acids, proteins, and vitamins, which can improve the body's immunity, and have a strong inhibitory effect on the prevention and treatment of high blood pressure, heart disease, edema and other diseases.
    Action and pharmacological effects
    .

    Lycopene in tomato has biological effects such as antioxidant, reducing the risk of cardiovascular disease, and inhibiting the occurrence and development of tumors
    .
    Relevant research results show that processed tomatoes have better nutritional value than fresh tomatoes.
    The tomato paste is concentrated and has a higher lycopene content, which is easier for the body to absorb lycopene after heating
    .

    Canned edible mushrooms are rich in nutrients, delicious in taste, high in protein and low in fat, and have always been known as "plant meat"
    .
    Mushrooms also contain iron, calcium, crude fiber, and 19 kinds of amino acids, of which eight are essential amino acids
    .
    Modern medicine shows that mushrooms contain a variety of antiviral components, which can inhibit the occurrence and development of tumors, reduce certain cholesterol, lower blood pressure, etc.
    , and have extremely high nutritional value
    .

    3.
    Canned fruit

    The fresh fruit is processed into canned food.
    Through scientific and reasonable technology, as long as the lid is tightly sealed and stored properly, it can be stored for 24 months or even longer within the shelf life indicated on the product
    .

    4.
    Canned aquatic products

    The most common canned aquatic products in supermarkets in China are canned tuna dipped in different soups and served with various flavors, and canned dace in tempeh, which has undergone a century of changes and inherited the history of southern Guangdong
    .
    It is delicious and delicious to eat directly, and it can also be cooked with other vegetable ingredients
    .
    Fresh mackerel is not easy to preserve, and it rots when it comes out of the water.
    The common practice is to process it into cans.
    Common flavors include brine, oil immersion and tomato juice
    .
    In addition, there are soft and tender sea cucumbers, nutritious and tender abalone and other seafood delicacies
    .

    5.
    Canned porridge

    Canned porridge has a rich variety and a long history, among which canned eight-treasure porridge is made of a variety of whole grains, rich in nutrients, moderate in sweetness, and easy to digest and absorb
    .
    Since the development of canned porridge, many flavors such as meat porridge, fruit porridge, vegetable porridge, and skin-beautifying porridge have been developed
    .

    Photo courtesy of China Canned Food Industry Association

    6.
    Canned dishes

    If you have poor cooking skills or are too lazy to stir-fry, you can also order canned dishes without ordering takeout
    .
    In recent years, there have been many kinds of canned dishes, including fish-flavored shredded pork, Kung Pao chicken, Mapo tofu, curry potatoes, etc.
    They can be eaten simply by heating them at home.
    Now, canned dishes are more convenient for heating
    .

    7.
    Canned grains

    Miscellaneous grains are rich in nutrients, but because most of them have poor palatability and digestibility, they are not easy to arouse people's appetite.
    If they are made into canned miscellaneous grains with delicate taste, they will obtain higher sensory evaluation and be more convenient to eat
    .
    One of the more popular canned cereals is canned corn
    .

    8.
    Other canned food

    In recent years, there is a kind of food that is very popular in the health care market - canned bird's nest
    .
    Only bird's nest, water, rock sugar are added, and advanced canning technology is adopted to provide consumers with more convenient, time-saving and long-lasting beauty supplements
    .

    9.
    Canned pet food

    Don't forget to prepare delicious rations for "hairy children" at home, and prepare some canned pet food to meet the daily needs of cats and dogs at home.
    The nutrition of canned pet food is also very comprehensive
    .

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