%0 Journal Article %T Quantification penolic compounds in extracts populus tremula L. %A Maslennikova, K.. %K extract, Populus tremula L., aspen bark, wood waste, fenolglikozidy, flavonoids, rutin, spectrophotometer. %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N 3 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov