Development of safe products from local waste of oil and fat production Dilnoza Rakhmatova, Matrufjan Musaev, Gulnora Gulomova, Malika Aripkhadzhaeva and Dilrabo Nizamova E3S Web Conf., 371 (2023) 01035 Published online: 28 February 2023 DOI: 10.1051/e3sconf/202337101035