Products’ preservation is used to prevent them from perishing.
In most cases the cause of the food spoilage lies in the reproduction of microorganisms. Preserving ensures prevention of microbial flora development such as bacteria, molds, yeasts which can include both pathogenic and non-pathogenic species.
Preservatives belong to E200-299 group. In the list on the right margin you can find the products of this group approved by the legislation of the Russian Federation and by the Ministry of Health.