Biomics

Great relevance is the possibility of obtaining natural rubber from plant material grown in temperate-zone countries. Industrial cultivation of rubber-bearing plants under the conditions of Russia can be quite profitable, provided that the same plant material is used to produce several economically valuable metabolites. The aim of our work was to screen potentially rubber-bearing plants of the Republic of Bashkortostan flora for the maintenance of antimicrobial metabolites. According to the literature data and the results of our own field observations, 24 plant species from the Euphorbiaceae and Asteraceae were selected for such a screening. As a result of the conducted research, 10 species of potentially promising rubber-bearing plants were found, with an average rubber content of 5% or more: Cichorium intybus, Hieracium umbellatum, Picris hieracioides, Pilosella echioides, Senecio erucifolius, Scorzonera stricta, Sonchus palustris, Taraxacum proximum, Tragopogon major, Tragopogon podolicus. We were able to show the presence of antimicrobial activity only for hexane extracts of Crepis sibirica, Inula helenium and Senecio schwetzovii, which were not included in our list of potentially promising rubber-bearing plants. We are discussed about the prospect of domestication of I. helenium in the roots of which found on average 4.3% rubber-like substances, and the hexane extracts of the roots of this plant had antibacterial activity against Staphylococcus aureus.

antimicrobial activity, hexane extract, disc diffusion method, rubber-bearing plants, natural rubber, Inula helenium

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