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Solubility of Ferulic Acid and Tetramethylpyrazine in Supercritical Carbon Dioxide

Yongyue Sun, Shufen Li, Can Quan

Abstract

The solubility of ferulic acid (3-(4-hydroxy-3-methoxyphenyl)-2-propenoic acid) and tetramethylpyrazine (2,3,5,6,-tetramethylpyrazine) in supercritical carbon dioxide (SC-CO 2 ) was determined at temperatures from (308 to 338) K and pressures from (10 to 35) MPa. The data presented in this work will help to assess possibility of extraction from Ligusticum chuanxiong with SC-CO 2 . Experimental data of the solubility of ferulic acid and tetramethylpyrazine were correlated by a Chrastil equation, and the values of average absolute relative deviation (AARD) were 12.92 % and 4.23 %.

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Key concepts: Tetramethylpyrazine, Ferulic acid, Chemistry, Supercritical carbon dioxide, Solubility, Extraction (chemistry), Chromatography, Supercritical fluid