Extraction of Cinnamic acid and Chrysin from Propolis by Using Supercritical Carbon Dioxide

Abstract

This paper was examined the optimal extraction conditions of bioactive substances, cinnamic acid and chrysin from a Chinese propolis by using super-critical carbon dioxide (SC-CO₂) . Cinnamic acid was extracted at lower pressure and shorter time than chrysin. The optimal extraction temperature for cinnamic acid and chrysin was 310K. It was suggested that differences of extraction behavior was caused by solubilities of these substances.