The way of old bread recycling in the bread making Olesia Savkina, Lina Kuznetsova, Marina Lokachuk, Olga Parakhina, Elena Pavlovskaya and Natalia Lavrenteva E3S Web Conf., 161 (2020) 01082 Published online: 15 April 2020 DOI: 10.1051/e3sconf/202016101082