Vegetable raw materials and their processed products are a source of necessary biologically active nutrients and are widely used in food production when creating functional and specialized nutrition products. Studies of the mineral profile of wild cranberry berries (Vaccinium oxycoccos) growing in the Republic of Karelia and berry processing products (juice and cake) with different methods of processing raw materials have been carried out. Studies of the mineral composition of fresh cranberry berries and their processed products obtained by various methods showed a high content of essential macro- and microelements in fresh berries, juices and cakes and allowed us to establish the regularity of migration and distribution of micronutrients depending on the method of pre-processing of raw materials. The data obtained during the experiment allow us to judge the high mineral profile of wild cranberry berries and its processed products and the content of certain elements (in particular phosphorus and manganese) in a physiologically significant amount, which explains the prospect of using products of processing wild berry raw materials to enrich food with micronutrients. Studies of the mineral composition of edible packaging films based on concentrated cranberry juice have shown a higher mineral profile of all samples of films with the addition of juice obtained with pretreatment of berry raw materials with steam, regardless of the type of structure-forming matrix, which is due to a higher content of concentrated juice solids. It has been established that the pre-processing of berry raw materials with steam before extracting the juice, as well as its subsequent concentration, allows processing raw materials with maximum preservation of essential components with a high degree of biological activity.)

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