Development of a non-alcoholic drink based on artesian water and a freezed birch fungus (Inonotus obliquus) extract

The purpose of research is to develop formulations of soft drinks based on artesian water and sublimated extracts of the birch fungus chaga and evaluate their quality. The article presents the conditions for obtaining water infusions of birch fungus - chaga. The organoleptic and physico-chemical parameters of the sublimated chaga extract were determined. The research results showed that the content of the polyphenol carbon complex in the dry extract based on Inonotus obliquus was 22.50 %. The solubility index of finished products is 0.28 cm3 of raw sediment for chaga sublimates, which meets the requirements of the State Pharmacopoeia, i.e. does not exceed 0.4-0.5 cm3 of wet sediment. Therefore, the obtained sublimated extracts are able to dissolve well in aqueous solutions. The resulting sublimated chaga extract had a high hygroscopicity, which amounted to 45.00±0.05 % due to the presence of PFC. The moisture content of sublimated chaga extracts was 3.55 %, which meets the requirements of the State Pharmacopoeia, i.e. does not exceed 2-4.5 %. A prescription composition of soft drinks based on artesian water and sublimated extracts of the chaga mushroom was developed. The organoleptic, physicochemical and microbiological parameters of a soft drink based on artesian water and sublimated extracts of birch fungus - chaga were determined. An assessment of the energy value of non-alcoholic developed drinks was carried out, which amounted to 0.014 kcal/kJ per 100 g of the product.