What are the characteristics and advantages of tinplate

1. Opaque
        
In addition to causing food degradation reactions, light also causes changes in proteins and amino acids. Vitamin C is more likely to interact with other food ingredients when exposed to light, resulting in a large amount of loss. According to the research and analysis of tea tin manufacturers, the loss of vitamin C in milk in transparent glass bottles is 14 times higher than that in dark bottles. Light will also cause oxidative odor in milk and cracking of nuclides and methionine Loss of nutritional value, the opaque tinplate can make the highest preservation rate of vitamin C.

2. Good sealing
        
The barrier of packaging containers to air and other volatile gases is very important for the preservation of nutrients and sensory quality. Comparison of various fruit juice packaging containers proves that the oxygen permeability of the container directly affects the browning of the juice and the preservation of vitamin C; metal cans, glass bottles and aluminum foil laminates with low oxygen permeability, and the preservation of vitamin C in the carton Better, among which the tin can is the best.

3. Reduction of tin
        
Tin on the inner wall of tinplate will interact with the oxygen remaining in the container during filling, reducing the chance of food ingredients being oxidized. Tea tin box manufacturers introduced the reduction of tin, which has a good preservation effect on the flavor and color of light-colored fruits and juices. Therefore, the use of unpainted iron canned juice cans is better for nutritional preservation than other packaging materials The browning changes slightly, the flavor quality is more acceptable, and the shelf life is extended.