It is sometimes convenient to categorize packages by layer or function: primary, secondary, etc. 1  Primary packaging is the material that first envelops the product and holds it. 2  Secondary packaging is outside the primary packaging, and may be used to prevent pilferage or to group primary packages together.
Does Corn Need To Be Refrigerated? Corn does not typically need to be refrigerated in order for it to be safe to eat. You will want to be aware of the fact that the longer you keep your corn in the refrigerator, the more flavor and vitamins you will lose, so it will not have quite as much nutritional value or taste to it.
(However, they wonât keep as long as they would if kept at ~55Â°F.) In general, potatoes will keep for 1-3 weeks in the refrigerator, but this depends on when they were harvested before they got to you. Sweet potatoes should be stored the same way as white potatoes. The usual advice is not to refrigerate them, but they will tolerate refrigeration as long as they have been âcuredâ at 85Â°F for 5-8 days to allow the skins to dry out and harden. Raw whole potatoes can be stored wrapped or unwrapped.