The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology
DOI:
https://doi.org/10.17533/udea.vitae.15462Keywords:
Saccharum officinarum L., isotherms of adsorption, thermodynamics, powdersAbstract
Background: Sugarcane is one of the world’s largest crop. It grows in the tropical and subtropical regions, and its harvest provides 80% of the world’s sugar. In Latin America unrefined cane sugar is widely available and much less expensive than refined sugar. Sugarcane is a crop of great interest in Colombia due to the economic impact on the rural population and its application as sweetener agent. The poder of sugarcane (Saccharum officinarum L.) is widely used as a raw material in a wide range of industries such as foods, pharmaceutical, cosmetic and chemical. Objectives: The aim of the research work was the evaluation of the adsorption thermodynamics of sugarcane powder obtained by spray drying technology. Methods: The adsorption isotherms of sugarcane powder were evaluated at temperatures of 4 ± 0.1, 20 ± 0.2 and 30 ± 0.3 °C and its thermodynamic properties such as Gibbs free energy (G), differential heat of adsorption (ΔH) and differential entropy (ΔS) were calculated as a function of moisture content. Experimental data of adsorption isotherms were fitted to the GAB (Guggenheim – Andersen - de Boer), BET (Brunauer – Emmett - Teller), Henderson, Caurie, Smith, Hasley, Peleg, and Oswin models. Results: The results showed a type-II sigmoidal behavior, with temperature having a statistically significant effect. The GAB equation showed a better fit to the experimental data modeling (0.11≤aw≤0.87) although all models showed validity and goodness of fit to the experimental data. The net isosteric heat increased to a maximum value (57 kJ mol-1) and then decreased with the increase in moisture content. Conclusions: The sugarcane powder with maltodextrin, obtained by spray drying got low adsorption thermodynamic stability, as it required very low energy to occur this phenomenon, being obtained the maximum net isosteric heat when moisture content of 4.7% (d.b). This value is within the range of the monolayer moisture content found in the GAB and BET models.
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Sampietro D, Vattuone MA, Isla MI. Plant growth inhibitors isolated from sugarcane (Saccharum officinarum) straw. J Plant Physiol. 2006 Julio 3; 163 (8): 837-846.
Rodriguez G., Garcia H., Diaz Z., Santacoloma P. Producción de Panela como estrategia de diversificación en la generación de ingresos en áreas rurales de América Latina. AGSF (Servicio de Gestión, Comercialización y Finanzas Agrícolas). Roma, Italia: FAO. 2004. 81 p.
Ministerio de Agricultura y Desarrollo Rural Observatorio Agrocadenas Colombia. Características y estructura de la cadena agroindustrial de la panela en Colombia. Documento de trabajo Número 12. Bogotá, Colombia: MADR, Ministerio de Agricultura y Desarrollo Rural. 2004. 12 p.
Castellanos OF, Torres LM, Flórez DH. Agenda prospectiva de investigación y desarrollo tecnológico para la cadena productiva de la panela y su agroindustria en Colombia. Bogotá, Colombia: Giro Editores Ltda. 2009. 258 p.
Rodríguez E. La Agrocadena panelera y el alcohol carburante en Boyacá. Cenes. 2004; 24 (37): 157 – 173.
Ministerio de Agricultura y Desarrollo Rural Observatorio Agrocadenas Colombia. La cadena de la panela en Colombia. Una mirada global de su estructura y dinámica 1991-2005. Documento de trabajo número 103. Bogotá, Colombia: Ministerio de Agricultura y Desarrollo Rural. 2006. 24 p.
Osorio G. Buenas Prácticas Agrícolas –BPA- y Buenas Prácticas de Manufactura –BPM– en la Producción de Caña y Panela. Medellín, Colombia: Corpoica, Mana, FAO. 2007. 200 p.
Gabas AL, Telis-Romero J, Giraldo-Gómez GI, Nicoletti-Telis VR. Propiedades termodinámicas de sorción de agua de la pulpa de lulo en polvo con encapsulantes. Ciênc Tecnol Aliment. 2009 Oct-Dec; 29 (4): 911-918
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