Polyphenols content, antioxidant capacity, and antimicrobial potential of introduced fruit plant Prinsepia uniflora batalin

This work deals with the studying antioxidant ability and the polyphenols accumulation of introduced fruit plant Prinsepia uniflora Batalin in order to reveal the low spread species having great secondary metabolites content and bioactivity.The urgency of the task of enriching the plant resource base for a balanced diet, the creation of functional foods and potential sources of new drugs substantiated by the results of research in recent years.The relevance of this task for the steppe zone having an insufficient variety of the fruit plant species with health-promoting properties was argued.High polyphenols content in Prinsepia uniflora fruits with predominant accumulation in the peel compared to the pulp was established.However, total antioxidant capacity was greater in the fruit pulp, indicating the possible contribution of some other secondary metabolites in the fruit antioxidant potential along with the polyphenols.Analysis of Prinsepia uniflora leaf extracts revealed twice the levels of polyphenols and antioxidant capacity in young leaves compared to mature ones.In general, the predominant accumulation of polyphenols in the leaves, while the greater antioxidant potential in the fruits was established.Thus, the results of the work testify in favor of the suitability of both the generative and vegetative organs of Prinsepia uniflora plants as a rich source of diverse secondary metabolites including polyphenols.Significant antimicrobial activity of both plant fruit and leaf extracts was experimentally shown by disc-diffusion assay.The greatest inhibition of colony growth was exhibited against Gram-positive bacterial strain Staphylococcus aureus B904, Gram-negative Erwinia dissolvens 170, and clinical fungal strain Candida albicans as well.Revealed range of the antimicrobial activity indicates the viability of Prinsepia uniflora fruits and leaves as a potential source of active compounds for the creation of new drugs.It was concluded that the introduced Prinsepia uniflora plants are able to realize the genetic potential for the accumulation of secondary metabolites and can enrich the phytodiversity of the steppe zone, serving as a potent source of biologically active compounds.