Antibacterial activity of extracts from the flowers of the double-feathered cosmea (Cosmos bipinnatus cav.) in relation to some clinical isolates
Автор: Yurtayeva E.A., Utyaganova E.V., Kulichenko E.O., Oganesyan E.T., Temirbulatova A.M.
Журнал: Вестник Пермского университета. Серия: Биология @vestnik-psu-bio
Рубрика: Микробиология
Статья в выпуске: 3, 2023 года.
Бесплатный доступ
The article is devoted to study the antibacterial activity of alcoholic and aqueous extracts from the flowers of two varieties of double-feathered cosmea (Cosmos bipinnatus Cav.) - ‘Rosea’ and ‘Dazzler’ in relation to clinical strains of S. aureus II, S. pneumonia UEV-1, E. coli 89, K. rpeimopiae SES 11/02. The conducted studies have shown that the studied extracts, both with respect to gram-positive and gram-negative strains, exhibit bacteriostatic activity. High bacteriostatic activity of extracts No. 5, 11, 12 was detected with respect to S. aureus at a concentration of 0.08 mcg/ml. Extract No. 6 showed antimicrobial action only at high concentrations of 0.96-0.8 mcg/ml. The activity against S. pneumoniae was shown by extract No. 6 in the concentration range of 0.96-0.32 mcg/ml, it was inferior in antibacterial effect to the comparison drug in high dosages. High bacterio-static activity was detected in extract No. 12, with respect to E. coli, where the degree of growth suppression relative to the control was 70%, which corresponded to the minimum studied concentration (0.02 mcg/ml). The comparison drug was inferior in action to extract No. 12 and demonstrated a comparable effect at a concentration of 128 mcg/ml. In relation to K. pneumoniae, extract No. 12 showed the best result at the lowest concentration of 0.02 mcg/ml, it showed a growth suppression percentage of 60%, which is comparable to the comparison drug ceftriaxone at a concentration of 32 mcg/ml. The leader was an aqueous extract No. 12 obtained from the flowers of the double-feathered cosmea of the Dazzler variety, which showed bacteriostatic activity against gram-positive and gram-negative test cultures. The most intense effect of the studied extracts was shown in relation to gram-negative flora.
Staphylococcus aureus, streptococcus pneumonia, escherichia coli, klebsiella pneumoniaе
Короткий адрес: https://sciup.org/147241309
IDR: 147241309 | DOI: 10.17072/1994-9952-2023-3-250-258