Curcuminoid extraction from rhizomes of Curcuma longa via aqueous two phases system
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2023-01-01
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00986445
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15635201
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2-s2.0-85170576795
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Chemical Engineering Communications
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item.page.oaire.edition
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Chemical Engineering Communications (2023)
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Kasemwattanarot P. (2023). Curcuminoid extraction from rhizomes of Curcuma longa via aqueous two phases system. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/90063.
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Curcuminoid extraction from rhizomes of Curcuma longa via aqueous two phases system
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Abstract
The extraction of curcuminoids [curcumin (C21H20O6, CUR), demethoxycurcumin (C20H18O5, DMC), and bisdemethoxycurcumin (C19H16O4, BDMC)] from Curcuma longa rhizomes was investigated using an aqueous two-phase system (ATPS) with ethanol/salt. The optimized conditions for the extraction process were determined by a central composite design to be an ethanol concentration of 13.6%, an ammonium sulfate concentration of 33.2%, and a temperature of 66.8 °C. Under these conditions, the highest yield of 97.9% was achieved, accompanied by a notable antioxidant activity of 84.38%. The experimental data exhibited good agreement with a second-order kinetic model, as confirmed by the evaluation of the coefficient of determination (R 2), normalized standard deviation, and average relative error.