Open AccessWaste management of dark coniferous trees debarking for producing antibacterial preparations
Author(s) -
И. В. Кротова,
Г. С. Гуленкова,
N. A. Osmolovskaya,
R. Yu Smirnov
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/315/5/052033
Subject(s) - bark (sound) , biocide , bacteria , antibacterial activity , aqueous solution , chemistry , pathogenic bacteria , kaempferol , traditional medicine , botany , food science , quercetin , biology , organic chemistry , antioxidant , medicine , ecology , genetics
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.