TY JOUR TI Quantification penolic compounds in extracts populus tremula L. KW extract KW Populus tremula L. KW aspen bark KW wood waste KW fenolglikozidy KW flavonoids KW rutin KW spectrophotometer. JO Actual directions of scientific researches of the XXI century: theory and practice AU Maslennikova, K.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov