Study of safety indicators of salted Bracken Fern Pteridium Aquilinum (L.) Kuhn harvested in the Krasnoyarsk KraiDaria Cheremnykh, Galina Gubanenko, Ekaterina Rechkina, Tatiana Balyabina and Olga KiselevaE3S Web Conf., 296 (2021) 07005DOI: https://doi.org/10.1051/e3sconf/202129607005