Due to the wide range of biologically active substances, the plant mixtures can influence the development of diabetes mellitus and its complications. Amino acids attract particular attention due to their ability to stimulate insulin secretion, reduce hyperglycemia and regulate metabolic processes in patients with diabetes. The aim of this study was to investigate the content of amino acids in the plant mixture samples: 1) Cichorium intybus roots, Elymus repens rhizome, Helichrysum arenarium flowers, Rosa majalis fruits, Zea mays columns with stigmas, 2) Urtica dioica leaf, Taraxacum officinale roots, Vaccinium myrtillus leaf, Rosa majalis fruits, Mentha piperita herb, which have proven antidiabetic activity in studies in vivo. The amino acids were separated by validated method of gas chromatography-mass spectrometry with pre-column derivatisation. Quantitative analyses of amino acids showed that the predominant components were L-proline in the sample 1 and L-leucine and L-proline in the sample 2 of the plant mixtures.

The aim. To study of the morphological and anatomical features of the structure of inflorescences of Chrysanthemum × hortorum Bailey, variety Pectoral. Materials and methods. The inflorescences of Chrysanthemum × hortorum Bailey, cultivar Pectoral were used for the analysis. The raw materials were harvested in the phase of mass flowering of plants in September-October 2019 at the experimental plots of the department of floral and ornamental plants of the National Botanical Garden named after M.M. Grishko of the National Academy of Sciences of Ukraine in Kyiv. Results. The investigated inflorescences are represented by bright orange double baskets, consisting of seated semiflorets and disk flowers arranged spirally on a convex bare anthoclinium. The involucrum of Chrysanthemum × hortorum Bailey inflorescences of the Pectoral variety has a dense structure with elongated leathery leaves. The marginal flowers of the anthodium are red-orange, pseudo-ligate female; the middle flowers are yellow, tubular, bisexual. The apex and edge of the epidermal cells of pseudo-ligate flowers are characterized by papillary growth and slight folding of the cuticle; at the base of the corolla lingula there are cells with calcium oxalate crystals in the form of small druses. The anatomical structure of tubular flowers is characterized by essential oil glands, typical for the Asteraceae family. The epidermis of the wrapper leaves is represented by oval cells with numerous essential oil glands and large surface outgrowths. Conclusions. The main diagnostic morphological and anatomical features of the inflorescences of Chrysanthemum × hortorum Bailey cultivar Pectoral have been established, which can be further used in the identification of new medicinal plant materials