The present and future of preservatives

Sulfites may cause allergy symptoms in some people,but most antioxidant preservatives are generally recognized as safe.So should you be worried about preservatives?Well, they're usually near the end of the ingredients list because they're used in very small amounts determined by the FDA to be safe.Nevertheless, some consumers and companies are trying to find alternatives.Packaging tricks, like reducing the oxygen around the food can help,but without some kind of chemical assistance,there are very few foods that can stay shelf stable for long.