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.
Do not store raw sweet potatoes in the refrigerator as the cold will negatively affect the taste and texture. If kept on the counter, make sure to keep them in a darker part of the counter away from direct sunlight or fluctuations in temperature.Cooked sweet potatoes can be frozen for up to a year if packed in a sealed and air-tight container. Cooked sweet potatoes will also keep well in the refrigerator for about one week.If purchased fresh and stored properly, raw sweet potatoes should last about 10 to 14 days.o not store raw sweet potatoes in the refrigerator as the cold will negatively affect the taste and texture. If kept on the counter, make sure to keep them in a darker part of the counter away from direct sunlight or fluctuations in temperature.