Extraction of Biologically Active Compounds from Aspen (Populus tremula L.) Bark by Supercritical Carbon Dioxide

Key Points

• To investigate the extraction efficiency of biologically active compounds from Aspen bark using supercritical CO2 compared to conventional methods.
• Used supercritical fluid extraction with CO2 at specific temperatures and pressures
• Analyzed component composition using chromatography–mass spectrometry
• Compared extraction efficiency with conventional liquid extraction using petroleum ether
• Identified significant amounts of fatty acids and esters in the bark extract
• Showed that supercritical CO2 extraction yields more steroidal and triterpenoid components than petroleum ether extraction
• Demonstrated the effectiveness of supercritical CO2 at specific temperatures and pressures

Abstract