Show simple item record

dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorCoronel Delgado, Aura Yazmin
dc.contributor.authorCiro Velásquez, Héctor José
dc.contributor.authorRestrepo Molina, Diego Alonso
dc.identifier.issnISSN: 2248-7026
dc.description.abstractThis study aimed to evaluate the thermodynamic properties of sorption isotherms and glass transition temperature (Tg) and the thermal properties of a dye powder obtained from turmeric extracts using spray drying. The sorption isotherms were evaluated at 15, 25 and 35 ºC using the dynamic gravimetric method, wherein the isotherm data of the experiment were fit to GAB and BET models. Likewise, the Tg was measured using differential scanning calorimetry (DSC). Thermogravimetric analysis (TGA) was used to determine the mass loss, and the thermal properties (heat capacity, diffusivity and thermal conductivity) were determined using transient flow method. The results demonstrated that the GAB model best fit the adsorption data. The DSC analysis presented a glass transition temperature of 65.35 ºC and a loss of volatiles at 178.07 ºC. The TGA analysis indicated a considerable mass loss starting at 193 ºC, resulting in degradation of the product. The thermal properties demonstrated a heat capacity of 2.45 J/g ºC, a thermal conductivity of 0.164 ±0.001 W/mK and a thermal diffusivity of 8.7x10-8 ± 0.000 m2/s
dc.publisherUniversidad Nacional de Colombia
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Revista Facultad Nacional de Agronomía Medellín
dc.relation.ispartofRevista Facultad Nacional de Agronomía Medellín
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.subject.ddc57 Ciencias de la vida; Biología / Life sciences; biology
dc.subject.ddc58 Plantas / Plants
dc.titleThermal and thermodynamic characterization of a dye powder from liquid turmeric extracts by spray drying
dc.typeArtículo de revista
dc.relation.referencesCoronel Delgado, Aura Yazmin and Ciro Velásquez, Héctor José and Restrepo Molina, Diego Alonso (2016) Thermal and thermodynamic characterization of a dye powder from liquid turmeric extracts by spray drying. Revista Facultad Nacional de Agronomía, 69 (1). pp. 7845-7854. ISSN 2248-7026
dc.subject.proposalsorption isotherms
dc.subject.proposalturmeric powder
dc.subject.proposalglass transition temperature
dc.subject.proposalTGA analysis

Files in this item


This item appears in the following Collection(s)

Show simple item record

Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit