Geopropolis from Melipona quadrifasciata anthidioides Lepeletier: a source of antioxidant natural products of floral origins - Brandão Torres Luce, M; Uehara Daniella, E; Galdino, J; Oliveira Fidalgo, A; Fernandes Pinto da Luz, C (Planta Medica International Open, 2017)