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- W2075232341 abstract "Abstract This work reports the extraction of ginger ( Zingiber officinale Roscoe) roots using sub and supercritical CO 2 and compressed propane as solvents. Antioxidant activity effect and phenolic content were evaluated on the extracts obtained. The extractions were performed in a laboratory scale unit at pressures of 8.0 MPa, 16.5 MPa and 25.0 MPa using CO 2 and 3.0 MPa, 6.5 MPa and 10.0 MPa using propane, and at 293.15 K, 313.15 K and 333.15 K for both solvents. The operating conditions tested achieved a maximum yield of 3.21 wt% for the CO 2 extraction and 2.75 wt% for the extraction using propane as solvent. When CO 2 was used as solvent, the pressure and temperature presented significant effect on the extraction yield. When propane was used, the most important variable was the pressure that presented a positive effect on the extraction yield. The chemical profiles were determined by gas chromatography and were similar for the two solvents, in which the main compounds were α-zingiberene, β-sesquiphellandrene, α-farnesene, geranial, β-bisabolene and β-eudesmol. The antioxidant activity assays were performed on the extracts obtained using the phosphomolybdenum reducing method. The extracts obtained using supercritical CO 2 and compressed propane presented antioxidant effects. The highest antioxidant activity (931.67 ± 2.51 mg of α-tocopherol/g of extract) was found for extracts obtained using supercritical CO 2 as solvent at 313.15 K and 16.5 MPa." @default.
- W2075232341 created "2016-06-24" @default.
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- W2075232341 date "2012-11-01" @default.
- W2075232341 modified "2023-09-27" @default.
- W2075232341 title "Ginger (Zingiber officinale R.) extracts obtained using supercritical CO2 and compressed propane: Kinetics and antioxidant activity evaluation" @default.
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- W2075232341 doi "https://doi.org/10.1016/j.supflu.2012.08.001" @default.
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