Liquid-liquid equilibrium of rosemary model essential oil (α-pinene + eucalyptol + camphor) and solvent (ethanol + water) at room conditions

Gonçalves, Daniel; Panzarin, Camila; Gonçalves, Cintia B.; Rodrigues, Christianne Elisabete da Costa

doi:10.1016/j.fluid.2020.112730

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…Camphor found in Lavandula officinalis and Cinnamomum camphora had antioxidant and anti-inflammatory activities ( Lee et al, 2006 ; Barkat and Imène, 2012 ). Camphor is also found in other plants including Rosemary essential oil, which has been used in pharmaceutical and cosmetic industries ( Gonçalves et al, 2020 ). Alpha and beta thujone are detected in the oil of several plants including Salvia officinalis and Artemisia herba alba , which have been used in perfume, pharmaceutical, cosmetics, and food industries.…”

Section: Resultsmentioning

confidence: 99%

Promising Antioxidant and Anticorrosion Activities of Mild Steel in 1.0 M Hydrochloric Acid Solution by Withania frutescens L. Essential Oil

et al. 2021

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The present study was conducted to evaluate the anticorrosive and antioxidant activities of essential oil from Withania frutescens L. In the present study, the extraction of Withania frutescens L. essential oil (Wf-EO) was conducted using hydrodistillation before being characterized by gas chromatographic analysis (GC/MS) and flame ionization detector (GC/FID). Four bioassays were used for antioxidant testing including 2,2-diphenyl-1-picrylhydrazyl (DPPH), total antioxidant capacity (TAC), ferric reducing antioxidant power (FRAP), and β-carotene bleaching. The inhibiting effect of Wf-EO on the corrosion behavior of mild steel in 1.0 M HCl was conducted by using polarization curves and electrochemical impedance spectroscopy techniques. The yield of Wf-EO was 0.46% including 175 compounds identified by GC-MS. The oil was mostly constituted of camphor (37.86%), followed by thujone (26.47%), carvacrol (6.84%), eucalyptol (3.18%), and linalool (2.20%). The anti–free radical activity of Wf-EO was 34.41 ± 0.91 μg/ml (DPPH), 9.67 ± 0.15 mg/ml (FRAP), 3.78 ± 0.41 mg AAE/g (TAC), and 89.94 ± 1.44% (β-carotene). The Wf-EO showed potent antioxidant activity in all bioassays used for testing. The anticorrosion activity, polarization curves as well as EIS diagrams indicated that the Wf-EO exhibited anticorrosive properties and reacted as a suitable corrosion inhibitor in an acidic medium.

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Section: Resultsmentioning

confidence: 99%

Promising Antioxidant and Anticorrosion Activities of Mild Steel in 1.0 M Hydrochloric Acid Solution by Withania frutescens L. Essential Oil

et al. 2021

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“…Previous research on the purification of essential oils using the liquid–liquid extraction method has been widely applied using appropriate solvent selection such as organic solvents mixed with water alcohol, ionic liquids, and deep eutectic solvents. − Zhang, Sucipto, , Koshima, and Gonçalves have carried out experiments in separating essential oils using mixed solvents of water and alcohol at different temperatures and obtained the solubility of each solvent in separating essential oils. On the other hand, Domańska, Li, and Matsuda use ionic liquid solvents in purifying essential oils using liquid–liquid extraction, but ionic liquids have high viscosity, and the toxicity and price of ionic liquids are higher when compared to organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria for Ternary Systems of Geraniol/Citronellol + Ethanol + Water at 303.15 and 323.15 K under Atmospheric Pressure

Fajrin,

Anugraha,

Kuswandi

2024

J. Chem. Eng. Data

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Liquid−liquid equilibrium data for ternary systems of geraniol + ethanol + water and citronellol + ethanol + water were obtained experimentally under atmospheric pressure and at temperatures of 303.15 and 323.15 K. The experiment was carried out using a jacketed equilibrium cell as a reference for citronella oil derivative component purification by the solvent extraction method. The experiment was held for 4 h stirring and 20 h settling before the organic and aqueous sample phases were taken to be analyzed. Gas chromatography was used to analyze the equilibrium samples of the organic and aqueous phase compositions. The experimental data were found to be thermodynamically consistent with the Othmer−Tobias and Bachman−Brown correlations. The data were well-correlated by NRTL and UNIQUAC models with rmsd ranging from 0.0086 to 0.0164 and following the type 1 classification by Treybal.

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Reference Correlation for the Viscosity of Ethanol from the Triple Point to 620 K and Pressures Up to 102 MPa

et al. 2023

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We present a wide-ranging correlation expressed in terms of temperature and density for the viscosity of ethanol based on critically evaluated experimental data. The correlation is designed to be used with an existing equation of state from the triple point (159 K) to 620 K and at pressures up to 102 MPa. Comparisons with experimental data indicate the estimated uncertainty of the correlation is 4.2 % (at the 95 % confidence level) for the liquid and supercritical phase at pressures up to 102 MPa, and 2 % in the gas phase. Furthermore, for calculating viscosity values at 0.1 MPa, an additional correlation is proposed, valid from the triple point to the boiling point with an estimated uncertainty of 2.3 % (at the 95 % confidence level).

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Liquid-liquid equilibrium of rosemary model essential oil (α-pinene + eucalyptol + camphor) and solvent (ethanol + water) at room conditions

Cited by 9 publications

References 39 publications

Promising Antioxidant and Anticorrosion Activities of Mild Steel in 1.0 M Hydrochloric Acid Solution by Withania frutescens L. Essential Oil

Promising Antioxidant and Anticorrosion Activities of Mild Steel in 1.0 M Hydrochloric Acid Solution by Withania frutescens L. Essential Oil

Liquid–Liquid Equilibria for Ternary Systems of Geraniol/Citronellol + Ethanol + Water at 303.15 and 323.15 K under Atmospheric Pressure

Reference Correlation for the Viscosity of Ethanol from the Triple Point to 620 K and Pressures Up to 102 MPa

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