Mineral composition
Sample preparation
Physalis peruviana L. samples were digested in HNO3:H2O2 (3:1) in a microwave oven with PTFE (Polytetrafluoroethylene) hermetical vessels. After decomposition, the solution was transferred to a 25 mL volumetric flask. The analyses were carried out at the Laboratory of Atomic and Mass Spectrometry at the Chemistry Department of Federal University of Santa Catarina.