Vapor–liquid equilibrium data and flooding point measurements of the mixture carbon dioxide+orange peel oil

Natural Convection Retards Supercritical CO2 Extraction of Essential Oils and Lipids from Vegetable Substrates

“…The explanation resides in the fact that a mixture of 4.7% essential oil and 95.3% lipids is actually being extracted from caraway seed, whereas Gr was calculated for pure essential oil components. Indeed, limonene and carvone are fully miscible in SC-CO 2 at 313 K and >8.8 MPa, but there is a pronounced decrease in solubility in the presence of fatty oils because of the partition of the essential oil components between a liquid, lipid-rich phase and a gaseous, CO 2 -rich phase. , Budich and Brunner reported that values of Δρ for orange peel essential oil were highly dependent on the density of pure SC-CO 2 (230−400 kg/m 3 ) and nearly independent of the temperature (323−343 K). On the basis of the correlation of these authors, extrapolated values of Δρ range from 289 kg/m 3 (for ρ = 486 kg/m 3 ) to 763 kg/m 3 (for ρ = 629 kg/m 3 ), which are of the same order of magnitude as those estimated in our study (Table ).…”

Modeling the Phase Behavior of Essential Oils in Supercritical CO2 for the Design of a Countercurrent Separation Column

“…With the aim of validating the semiempirical model, the prediction of the solubilities of natural oils in CO 2 is carried out. , The lemon and orange oils contain terpenoids whose VLE data have not been described in the literature, and the prediction of A i , C i , and k constants based on their properties is very useful for the prediction of their behaviors. In the case of lemon oil, limonene and citral are assumed to be the majority compounds, and in orange oil, the prediction of solubility is based on limonene, linalool, and citral.…”

“…The monoterpene content of orange peel oil depends on the origin of the oranges, and in this work three different compositions are studied (named as A, B, and C). In general, they present from 98.26 to 98.77 wt % monoterpenes, where the most common are limonene (∼95.35 wt %) and linalool (∼0.39 wt %) obtained from Budich and Brunner . Decanal and citral are also presented in the composition of the orange oil, but in this work only citral is considered in the mixture since decanal is not a terpenoid.…”

Techno‐Economic Evaluation of d‐Limonene and α‐Pinene Separation from Citrus and Turpentine Oils

“…Several citrus oils analyzed in this study, such as orange, tangerine (Ta), lemon (Le), and grapefruits (Gr), from PA (Productos el Arriero Cia. Ltda Colombia) [38], CP (extracted by cold-pressing Brazil) [39], ZUNM (Zhongshan Unicare Natural Medicine Co. China) [40], LAB (Labateca Colombia) [41], SGH (extracted with CH 2 Cl 2 from Sun Groves-Holiday USA) [42], solvent-free microwave extraction (SFMWE) from Citrus paradisi. L Turkey [43], and HD (extracted by hydrodistillation Turkey [44], also have high concentrations of d-limonene ranging from 72.5 to 96 % that depend on the citrus species and the extraction method [11] (see Tab.…”