A preservative is a substance that is added to food, medicines, or other products to help prevent spoilage or decay. It helps to extend their shelf life by inhibiting the growth of bacteria, fungi, or other harmful microorganisms. Full definition
As a rule of thumb, we generally recommend that all dog owners do their best to avoid foods with artificial preservatives in them. (pawster.com)
This chemical is commonly used as preservatives for fish meal and it has been linked to a variety of health problems in dogs and other pets. (dogfoodchat.com)
These vitamins function as natural preservatives in dog foods. (dogfoodinsider.com)