Preliminary Experiment on Supercritical CO₂ Extraction of Red Pigment from Chilli

The paper gives introduction to the essential characteristics of supercritical CO₂ fluid and its practical applications in extraction and separation processes abroad. Elementary tests for extracting red pigment from red chilli by using supercritical CO₂ extraction and separation technique are reported. The test results show that pigment and paprika element can be completely extracted from chilli, and they can be elementarily separated from each other.