The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology
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 i...
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2014-12-01
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| Series: | Vitae |
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| Online Access: | https://revistas.udea.edu.co/index.php/vitae/article/view/15462 |
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| author | Esteban LARGO-ÁVILA Misael CORTÉS RODRÍGUEZ Héctor José CIRO VELÁSQUEZ |
| author_facet | Esteban LARGO-ÁVILA Misael CORTÉS RODRÍGUEZ Héctor José CIRO VELÁSQUEZ |
| author_sort | Esteban LARGO-ÁVILA |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-24T03:54:19Z |
| format | Article |
| id | doaj.art-c59881b8e2b04bdd93ae54090a20625c |
| institution | Directory Open Access Journal |
| issn | 0121-4004 2145-2660 |
| language | English |
| last_indexed | 2024-12-24T03:54:19Z |
| publishDate | 2014-12-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Vitae |
| spelling | doaj.art-c59881b8e2b04bdd93ae54090a20625c2022-12-21T17:16:30ZengUniversidad de AntioquiaVitae0121-40042145-26602014-12-01213The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technologyEsteban LARGO-ÁVILA0Misael CORTÉS RODRÍGUEZ1Héctor José CIRO VELÁSQUEZ2Universidad Nacional de ColombiaUniversidad Nacional de Colombia Universidad Nacional de Colombia 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.https://revistas.udea.edu.co/index.php/vitae/article/view/15462Saccharum officinarum L.isotherms of adsorptionthermodynamicspowders |
| spellingShingle | Esteban LARGO-ÁVILA Misael CORTÉS RODRÍGUEZ Héctor José CIRO VELÁSQUEZ The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology Vitae Saccharum officinarum L. isotherms of adsorption thermodynamics powders |
| title | The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology |
| title_full | The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology |
| title_fullStr | The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology |
| title_full_unstemmed | The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology |
| title_short | The adsorption thermodynamics of sugarcane (Saccharum officinarum L.) powder obtained by spray drying technology |
| title_sort | adsorption thermodynamics of sugarcane saccharum officinarum l powder obtained by spray drying technology |
| topic | Saccharum officinarum L. isotherms of adsorption thermodynamics powders |
| url | https://revistas.udea.edu.co/index.php/vitae/article/view/15462 |
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