Influence of Medicinal Plant Extracts on the Number of Columns of Strain Escherichia Coli

The effect of extracts of medicinal plants from the families Lamiaceae and Asteraceae on the growth and development of the bacterial culture of Escherichia coli is question for discus. The strain of Escherichia coli was chosen as the object of the study. Extracts of medicinal plants pippermint, salvia officinalis, common oregano, thyme, calendula officinalis, wormwood, yarrow, tansy, chamomile at a dilution of 106 was studied. The extracts of all studied plant species had a bacteriostatic effect. After 24 hours, the greatest bacteriostatic effect was shown by extracts of chamomile, pippermint, wormwood and oregano. After analyzing oregno, calendula and chamomile from three of the above groups on the number of colonies of the collection strain of lactobacilli, we found that plant extracts of calendula and chamonile stimulated an increase in the number of colonies of lactobacilli. Keywords—extracts of medicinal plants, Escherichia coli, lactobacilli, bacteriostatic effect