Artículo
Synthesis and sorption performance of highly specific imprinted particles for the direct recovery of carminic acid
Fecha de publicación:
09/2012
Editorial:
Elsevier
Revista:
Process Biochemistry
ISSN:
1359-5113
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Carminic acid (CA) is a colorant of natural origin, which is demanded by the food, cosmetic, and pharmaceutical industries. In this work, a selective finite bath process was developed based on the utilization of molecularly imprinted polymeric particles. Such adsorbent was synthesized in a (porous) particle shaped form employing methacrylic acid (MAA) and 4-vinylpyridine (4Vpy) as monomers and ethylene glycol dimethacrylate (EDGMA) as a cross-linker. The imprinted particles were characterized by surface area, surface charge and pore size determination. The adsorption behavior of CA on such a material followed a Langmuir-Freundlich isotherm. Maximum capacity at equilibrium reached 0.64 mmol/g (316 mg/g) and maximum available binding sites 1.8 mmol/g (917 mg/g) were observed for an association coefficient value of 1.5 mM-1. Further, the imprinting factor; showing the strength of interaction of CA to the polymer, was calculated as 13 while the selectivity factor depicted a value of 15. The data presented indicates that the imprinted adsorbent could be conveniently utilized for the recovery of CA, from cochineal extract, in the finite bath mode of operation.
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Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(IMBICE)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA CELULAR (I)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA CELULAR (I)
Citación
Bibi, Noor Shad; Galvis, Leonardo; Grasselli, Mariano; Fernández-Lahore, Marcelo; Synthesis and sorption performance of highly specific imprinted particles for the direct recovery of carminic acid; Elsevier; Process Biochemistry; 47; 9; 9-2012; 1327-1334
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