TY JOUR TI SOME MEDICINAL PLANTS ANTIOXIDANT POTENTIAL OF THE SAMARA REGION KW stinging nettle KW common coltsfoot KW common tansy KW chamomile KW common yarrow KW total content of phenolic substances KW antiradical activity JO Bulletin of KSAU AU Borisova, A.V. AU Chervotkina, D.R. PY 2024 IS 0 PB Krasnoyarsk State Agrarian University