The extraction of chlorophyll from phyllostachys pubescens foliage has been studied using supercritical CO_2 extraction trchnology.The influence of extraction pressure,temperature,time,flow rate of CO_2,amount of entrainer(anhydrous ethanol),and particle size on the yield of chlorophyll were investigated.The results showed that the optimum conditions were a particle size of 60 mesh,temperature 323?K,pressure of 27?MPa,CO_2 flow rate of 60?g/h,time of 80?min,with 10% entrainer.The yield of chlorophyll under ...