Identification of carotenoid pigments of pumpkin grown in the South of Russia Lyudmila Rodionova, Irina Sobol, Lyudmila Donchenko and Natalia Limareva E3S Web Conf., 161 (2020) 01106 Published online: 15 April 2020 DOI: 10.1051/e3sconf/202016101106