Solubility of Liquid Organic Flavor and Fragrance Compounds in Subcritical (Hot/Liquid) Water from 298 K to 473 K

The solubilities of d -limonene, carvone, eugenol, 1,8-cineole, and nerol were determined in water at temperatures ranging from 298 K to 473 K. In general, increasing the temperature up to 473 K increased solubilities by a factor of ∼25 to 60. For example, increasing the temperature from 298 K to 473 K increased the mole fraction solubility of carvone from (9.7 ± 0.8) × 10 - 5 to (250 ± 8) × 10 - 5 . 1,8-Cineole exhibited an initial decrease in solubility with increasing temperature before following the trend of increasing solubility with increasing temperature. Analyses were performed to determine whether the compounds degraded at experimental conditions. Unlike α-pinene, these compounds showed no degradation, with the exception of nerol at 473 K.