Adsorption of protein on activated carbon used in the filtration of mucilage derived from Pereskia aculeata Miller

Abstract:

Mucilage is derived from Pereskia aculeata Miller via precursors obtained by an extraction process. However, this process produces dark liquor whose coloring is not desirable in the final food additives. Therefore, a fixed-bed filtration system with activated carbon was used for pigment elimination and clarification of the final product. Color parameters and protein contents were evaluated by comparing the extract and the filtrate. At the same time, an experimental study was conducted that monitored changes in pH and in the adsorption kinetics of proteins on the activated carbon using reactor tanks at various temperatures and residence times. When using a filtration column, the results showed an increase in parameters L*, b* and Hue angle, thereby indicating that the filtrate was closer to the yellow color when compared with the liquor feed. The results obtained using reactor tanks showed that the protein contents …

Año de publicación:

2017

Keywords:

Fuente:

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