Avoiding spoilage. Food can spoil quickly when individuals don’t take preventive measures. Many microscopic organisms feast on unattended foods. It’s possible to prolong the life of food using modern techniques such as vacuum sealing. Although no method can increase the lifetime of food indefinitely, vacuum sealing allows individuals the chance to preserve the freshness of foods well past their original date of production. The bacteria that consumes foods that are not protected will continue to multiply whenever water and nutrition are available. The foul odor and rotten appearance that shows on spoiled food is caused by the bacterial waste.