Waste management of dark coniferous trees debarking for producing antibacterial preparations

International Scientific Conference «AGRITECH-2019: Agribusiness, Environmental Engineering and Biotechnologies»

农业科学;生态环境科学;生物科学

Krotova, I.V.^1 ; Gulenkova, G.S.^1 ; Osmolovskaya, N.A.^1 ; Smirnov, R.Yu.^1

Siberian Federal University, 79/10 Svobodny pr., Krasnoyarsk

660041, Russia^1

关键词: Anti-bacterial activity;    Aqueous extracts;    Biocide activity;    Chemical compositions;    Coniferous trees;    Dihydroquercetin;    Pathogenic bacterium;    Water extracts;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/315/5/052033/pdf
DOI  :  10.1088/1755-1315/315/5/052033

来源: IOP

【 摘 要 】

The article presents the results of studying the antibacterial activity of fir tree and Siberian spruce bark water extracts. As test objects, pathogenic (3-4 hazard class) and saprotrophic bacteria were used. It has been shown that the studied aqueous extracts of dark-coniferous bark do not exhibit biocide activity against the conditionally pathogenic bacterium Escherichia coli. However, all the other studied bacteria are sensitive to the extracts analyzed both on day 3 and day 13. At the same time, the aqueous extract of the Siberian fir bark has a higher biocide activity against conditionally pathogenic and saprotrophic bacteria in comparison with the aqueous extract of the Siberian spruce bark. The antibacterial activity of aqueous extracts of the studied plants bark is determined by their chemical composition, primarily the presence of substances of a phenolic nature. It has been shown that the studied extracts mainly contain compounds of quercetin, dihydroquercetin and kaempferol.