The aim of this study was to evaluate the effects of A. camphorata extract (ACE) polysaccharides, ACE polysaccharides encapsulated in chitosan-silica nanoparticles (ACE/CS) and encapsulated in silica nanoparticles (ACE/S) on apoptosis of cells in a human liver cancer cell line (Hep G2). We investigated the cell cycle, mitochondrial membrane potential, Fas/APO-1, caspase-8, caspase-9 and caspase-3 signaling molecules, which are strongly associated with the apoptosis signal transduction pathway and are related to the responses of tumor cells treated with anti-cancer compounds.