Combined treatment of ground pork with supercritical CO2 and rosemary powder Investigated microbiological and physicochemical properties of the treated ground pork stored at 4xA0;°C Microbial populations were significantly reduced by combined treatment. Combined treatment significantly slow down the increase of oxidation rate caused by supercritical CO2 treatment. Combined treatment significantly increased L⁎ and b⁎ values of the ground pork.