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This work studies the enrichment of turmeric α-β-Ar turmerone using supercritical fluid extractions followed by solid–liquid column partition fractionation. The high-pressure vapor–liquid phase equilibrium of the α-β-Ar turmerone with carbon dioxide was also examined. The purity of α-β-Ar turmerone was increased from 67.7% in extracted oil up to 91.8% in enriched oil, as determined by HPLC analysis...