tinplate

     Opacity
    In addition to light will lead to deterioration of food reactions, we will also lead to changes in protein and amino acids. And vitamin C are easier to light irradiation and the role of other food ingredients, resulting in great loss. According to the research analysis, transparent glass bottles of milk, loss of vitamin C higher than the dark bottle of milk 14 times, the light will also produce oxidation of milk odor, and radionuclides, such as cracking and loss of methionine nutritional value, tin's opaque so the preservation of vitamin C, the highest rate.
    A good seal
    Containers and other volatile gases of the air barrier on the nutritional and sensory quality of preservation is very important. Prove more fruit juice containers, containers of oxygen transmission rate directly affect the browning of fruit juice and vitamin C preservation; low oxygen through the metal cans, plastic bottles and aluminum foil laminated cartons for the preservation of vitamin C well, among which the best cans.
    Reduction of the role of tin
    Tinplate tin wall with time remaining in a container filled with oxygen, reducing the chance of oxidation of food ingredients. Tinplate reduction of the role of light fruit, fruit juice flavor and color effects are well preserved, and therefore do not paint with iron than other canned fruit juice cans juice cans filled with packing material to save better nutrition, minor changes to brown,acceptance of good flavor quality, storage period was extended.
    Provide an effective source of iron
   Tinplate canned food, except for a few light canned fruit and juice, but most of the internal coating of the cans in order to improve the corrosion properties of the container; the electrochemical effect of the metal, paint cans in the canned food in a small amount of storage dissolution of iron to ferrous iron present in the form of sealed canned food, can easily be absorbed by the body content of about 1 to 10 ppm. To fruits and vegetables products, raw material itself is not much iron, tin cans of the product per 350 ml of beverage cans, iron content of 5 ppm calculated for each tank to provide 1.75mg iron, about the human daily intake of 18mg one-tenth. If the fruit and vegetable juice cans rich in vitamin C, iron is more easily absorbed, and thus iron canned food and beverage would be a good source of iron, tin cans of food to provide nutrition for more far-reaching.
    Because with these properties, so in addition to providing a hot tin cans outside, completely isolated from environmental factors, closed system, to avoid food because of the color of light, oxygen, moisture and deterioration, not because of aroma or by the environment through the smell fades through pollution and taste of food storage stability is better than other packaging materials, the highest rate of vitamin C preservation, preservation of nutrients are the best.