Assessment of microorganism activity as bio-preservatives for perishable food Margarita Shevchenko, Maria Zimina, Stanislav Sukhikh, Yegor Gromov and Elena Zubareva E3S Web Conf., 291 (2021) 02008 Published online: 19 July 2021 DOI: 10.1051/e3sconf/202129102008