Artículo
Experimental measurement and modeling of quinizarin solubility in pressurized hot water
Barrera Vazquez, Maria Fernanda
; Gañan, Nicolas Alberto
; Comini, Laura Raquel
; Martini, Raquel Evangelina
; Bottini, Susana Beatriz
; Andreatta, Alfonsina Ester
Fecha de publicación:
12/2016
Editorial:
Elsevier Science
Revista:
Journal of Supercritical Fluids
ISSN:
0896-8446
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In the field of natural products, anthraquinones are an important category of secondary metabolites present in various vegetable species. They are highly bioactive compounds, potentially useful for therapeutic applications, as antiviral, anti-bacterial and anti-cancer agents. Extraction processes using pressurized hot water offer an environmentally friendly alternative to traditional extraction and purification methods applied to anthraquinone-containing plants. Knowledge on high-pressure phase equilibria of anthraquinone + solvent mixtures is required to evaluate the potentiality of these processes. The need is for both, experimental data and thermodynamic models that are able to predict phase boundaries at different process conditions. In this work, the solubility of 1,4-dihydroxy-9,10-anthraquinone (quinizarin) in pressurized hot water has been measured, using a simple and reliable dynamic method. For the binary quinizarin + H2O, the measurements were performed at (333, 353, 373, 393, 413, 443, 463) K and pressures of (30, 60 and 90) bar. The group-contribution with association equation of state (GCA-EOS), with the definition of a cyclic ketone functional group (CyC[dbnd]O) was used to calculate solid-liquid equilibria of binary mixtures of anthraquinones with pressurized hot water. This model was able to give a good representation of the solubility behaviour of quinizarin in water.
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Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos(IPQA)
Articulos deINSTITUTO DE INVESTIGACION Y DESARROLLO EN INGENIERIA DE PROCESOS Y QUIMICA APLICADA
Articulos deINSTITUTO DE INVESTIGACION Y DESARROLLO EN INGENIERIA DE PROCESOS Y QUIMICA APLICADA
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Barrera Vazquez, Maria Fernanda; Gañan, Nicolas Alberto; Comini, Laura Raquel; Martini, Raquel Evangelina; Bottini, Susana Beatriz; et al.; Experimental measurement and modeling of quinizarin solubility in pressurized hot water; Elsevier Science; Journal of Supercritical Fluids; 125; 12-2016; 1-11
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