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Información tecnológica

On-line version ISSN 0718-0764


TORRES-VALENZUELA, Laura S.; MARTINEZ, Katherine G.; SERNA-JIMENEZ, Johanna A.  and  HERNANDEZ, María C.. Drying of Coffee Pulp: Process Parameters, Mathematical Model and its Effect over Physicochemical Properties. Inf. tecnol. [online]. 2019, vol.30, n.2, pp.189-200. ISSN 0718-0764.

The main objective of this work it is to evaluate the husk's drying process and its effect over the husk physicochemical properties. The kinetics of the drying process was followed during 420 minutes using temperatures of 40,50 and 60ºC. The experimental data matches 4 kinetics models of thin husk. Additionally, caffeine and chlorogenic acid content was evaluated along with the color parameters of humid and dry husk. Water content reduction of 13 % was obtained. Page's model was the best one to describe the drying process at the three temperatures. Regarding the biocompounds, its value was incremented by 4%, generating in this way reddish tonalities and changes in the tone angle, luminosity and chroma. These results evidence that drying process is an alternative to stabilize this byproduct, in a previous step before its industrial use.

Keywords : chlorogenic acid; caffeine; color; kinetic models; byproducts.

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