Evaluation of supercritical carbon dioxide extraction to obtain bioactive compounds from Vernonia amygdalina Delile leaves oleh Costa Fabíola Medeiros da, Ortega Terra Lemos Caroline, Arvelos Sarah, Traczynski Marcos Rodrigo, Silva Edson Antônio da, Cardozo-Filho Lúcio, Eponina Hori Carla, Watanabe Erika Ohta