The use of Soxhlet extractor for the production of tinctures from plant raw materials Dmitrii Borodulin, Maksim Prosin, Igor Bakin, Boris Lobasenko, Marina Potapova and Aleksei Shalev E3S Web Conf., 175 (2020) 08010 Published online: 29 June 2020 DOI: 10.1051/e3sconf/202017508010