Introduction. According to the World Health Organization, the number of patients with diseases of the nervous system in the world is increasing every year. The use of phytopreparations is a promising direction of pharmacotherapy; preparations from medicinal plant materials have a number of advantages in the treatment of chronic diseases.Aim. Qualitative analysis and quantitative determination of the main groups of biologically active substances collected from medicinal plant materials.Materials and methods. As an object of study, we used a collection of medicinal plant materials developed at the Department of Pharmaceutical Technology of the PSFA together with the Department of Pharmacognosy. Quantitative determination of biologically active substances of the collection was carried out by spectrophotometric method [Jenway PortLab 511 UV spectrophotometer PortLab Int., UK)] and by visual titration.Results and discussion. In this work, a qualitative analysis and quantitative determination of the content of flavonoids, phenolic compounds, sesquiterpenic acids and ascorbic acid was carried out, and the water absorption coefficient of the collection was determined.Conclusion. As a result of the work, the content of flavonoids, phenolic compounds, sesquiterpenic acids and ascorbic acid in the developed collection was confirmed, their amount was determined, which directly affects the pharmacological effect of the collection.

Herbal sedatives have been popular for several centuries, and the accumulated knowledge that has been passed down from generation to generation laid the foundation for the development of traditional medicine, and over time for such a science as herbal medicine. Herbal sedatives have a wide range of therapeutic effects, are well tolerated and have no serious adverse reactions, and are not addictive. According to statistical data on the incidence of the population by main classes and individual diseases for 2010-2018, the number of patients with diseases of the nervous system is growing annually, along with this, the need for sedative drugs is increasing. In this regard, the search and development of effective and safe medicines based on medicinal plant raw materials is an urgent area [1, 2]. Pharmaceutical infusions and decoctions, according to the order of the Ministry of Health of the Russian Federation No. 751n dated October 26, 2015, have a shelf life of 2 days, which significantly limits the possibility of their use. The production of films based on aqueous extracts from medicinal plant raw materials will make it possible to obtain more stable drugs, in addition, films have a number of advantages over other dosage forms. Films containing biologically active substances of plant origin have received the unofficial name phytofilms, which are a type of transdermal therapeutic systems. Phytofilms are hydrophilic systems that swell when in contact with water (or biological fluid), absorbing it in a certain amount, which leads to the dissolution of biologically active substances. They differ from synthetic polymeric therapeutic systems in that phytofilms are made in the form of matrix transdermal therapeutic systems on carriers of natural origin (gelatin, collagen, sodium alginate, agar-agar, etc.), which makes them safer [3, 4].

Garden strawberries (Fragaria ananassa) are widely cultivated on the territory of Russia on industrial plantations and private garden plots to obtain the fruits (berries) of this plant and their use as a valuable food product. When harvesting fruits, other parts of the garden strawberry are not used, however, its vegetative parts are a source of biologically active substances (BAS) and are of interest for the pharmaceutical and cosmetic industries [1, 4]. The biological activity of garden strawberry leaf extracts is due to the presence of secondary metabolites of a phenolic nature; their content in raw materials reaches more than 3% in some samples [2, 3]. Considering that the main group of biologically active substances of this raw material are flavonoids, the Department of Pharmacognosy with a course of botany conducted research to develop a method for quantitative determination of the amount of flavonoids in terms of rutin. Spectrophotometry was chosen as the optimal method for assessing the content of this group of substances in medicinal plant raw materials - leaves of garden strawberries, which allows determining the amount of flavonoids in terms of the dominant compound and obtaining reliable and reproducible results of quantitative analysis [8, 11]. The technological properties were studied and a therapeutic dose of dry strawberry extract was proposed, optimal compositions were selected and technologies of sachet-granules with dry strawberry extract were developed. The method for the quantitative determination of flavonoids in terms of rutin was validated. The results of the study can be used in the future in the development of draft regulatory documents for sachet-granules with dry strawberry extract of garden leaves and the study of their pharmacological activity.