The aim of this study was investigation of radical scavenging activity of apples dried by convection and with using the infrared and study of changes of radical scavenging activity during dried materials storages in different temperatures. Radical scavenging activity of apples reached about 70% of raw material during convective drying. Statistically essential changes of radical activity and polyphenols content with relation to raw apples where not observed for infrared dried material. Radical scavenging activity and polyphenols content decrease took place during the storage. Infrared dried material was characterized by higher rate of decrease, nevertheless it gained the ability to scavenging free radicals and polyphenols content on the level exceeding suitable convective dried material values. The research proved the positive correlation existence between radical scavenging activity and polyphenols content.