Vacuum packing helps preserve food for a long time without spoil. Vacuum packing machines are, therefore, essential for every home or food store to ensure that the food does not get spoil unnecessarily. By keeping the food in airtight containers or bags, they last longer, preserving their natural flavour and texture. There are different types of Vacuum packaging Machines. The vacuum chamber machines can enclose the entire food pack, including the bag and the contents, inside the machine. In another type of vacuum packaging machine, the external bag machines , only the end of the bag fits into the machine, while the rest of the bag remains out of the machine. Compared to the external bag machines, the vacuum chamber machines works more effectively because it has a better sealing mechanism, removing all air from the container. People use vacuum packing because of the many advantages offered by this method. Certain foods such as pork, chicken, fish, and many more are better used when vacuum packed than frozen. Freezing often results in oxidation and dehydration of the food, resulting in loss of flavour and taste. Freezer burn can be eliminated by using vacuum packaging machine. The vacuum packing machine removes the entire oxygen from the system, so it relieves the food from any oxidation and hence, prevents loss of shape or flavour. Vacuum packaging machines are useful to prevent the food from getting contaminated. There are many agents that contaminate the food. The clean, airtight pack saves the food from getting soiled during transportation from the farm to the shop. Many of the stores display the food in the glass cases to attract customers. Many customers test them by touching. These methods result in spoiling the quality and purity of the food items. The vacuum-packed food, on the other hand, remains fresh and clean even after being handled by many people. Another reason for using the vacuum packaging machine is to keep the food from drying out. The moderate moisture content in the food helps it to maintain its flavour and texture for a long time. If there is oxygen in the container, it results in evaporation, leading to loss of moisture and freshness of the food. Source: www.hicow.com
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http://www.hicow.com/vacuum-packing/packaging-and-labeling/food-2062171.html