Authors: Assoc. Prof. Dr. Mohd Azizi Che Yunus, Cathie Tan Ah Tee, Bruce Cheong Chiew Soong, Dr. Lee Nian Yian, Zuhaili Idham, Nor Faadila Mohd Idrus
Company/Faculty/School: UNIVERSITY TECHNOLOGY OF MALAYSIA and ECO BEE SHOP SDN BHD
Along with other bees’ product such as honey and royal jelly, Malaysian stingless bees (kelulut) propolis has outstanding therapeutic properties. However, ethanolic extract of propolis (EEP) raise-up the issue of food safety and halal. Furthermore, high content of unpalatable beeswax causes lower quality and purity of EEP. Extraction of propolis with supercritical carbon dioxide (SC-CO2) produces alcohol-free propolis extract. The high selectivity of SC-CO2 allows the separation of valuable compound from propolis. Therefore, propolis is dissolved in the SC-CO2 to remove all unwanted substances, yielding a pure final gold propolis extract rich in active compounds for extensive health effects.