Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy
In Peru, there are more than four thousand plants with medicinal properties, including muña, which helps digestion and improves health. The way to preserve these plants is drying up. The objective of this research was to investigate the coefficient of diffusion, enthalpy, and Gibbs free energy in th...
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2023
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| _version_ | 1881508888805638144 |
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| author | Silva Paz, Reynaldo Justino Mateo Mendoza, Dante Kiorkins Eccoña Sota, Amparo |
| author_browse | Eccoña Sota, Amparo Mateo Mendoza, Dante Kiorkins Silva Paz, Reynaldo Justino |
| author_facet | Silva Paz, Reynaldo Justino Mateo Mendoza, Dante Kiorkins Eccoña Sota, Amparo |
| author_sort | Silva Paz, Reynaldo Justino |
| collection | Producción científica |
| description | In Peru, there are more than four thousand plants with medicinal properties, including muña, which helps digestion and improves health. The way to preserve these plants is drying up. The objective of this research was to investigate the coefficient of diffusion, enthalpy, and Gibbs free energy in the drying kinetics of muña leaves. Different pretreatments were carried out on the samples (without pretreatment, as well as treated by immersion in 1% ascorbic acid and bleaching at 60 °C for 30 s), and they were dehydrated at three temperatures (40, 50, and 60 °C). The drying kinetics were modeled using eight mathematical models to represent the drying curve. The water content was reduced by the drying process. The logarithmic model was selected, as it showed the best fit to represent the drying kinetics of the muña. Activation energy values were similar between treatments (p > 0.05). The increase in temperature decreases the enthalpy and entropy and increases the Gibbs free energy with the effective diffusion coefficient. The drying kinetics allows one to determine the drying time for the storage of the product and the thermodynamic properties for the design of the equipment. |
| format | Article |
| id | oai:cris.upeu.edu.pe:20.500.15037/3001 |
| institution | UPeU |
| language | English |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | MDPI |
| publisherStr | MDPI |
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| spelling | oai:cris.upeu.edu.pe:20.500.15037/30012026-10-30T17:10:23ZMathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free EnergySilva Paz, Reynaldo JustinoMateo Mendoza, Dante KiorkinsEccoña Sota, AmparokineticsdryingmodelsmuffthermodynamicsIn Peru, there are more than four thousand plants with medicinal properties, including muña, which helps digestion and improves health. The way to preserve these plants is drying up. The objective of this research was to investigate the coefficient of diffusion, enthalpy, and Gibbs free energy in the drying kinetics of muña leaves. Different pretreatments were carried out on the samples (without pretreatment, as well as treated by immersion in 1% ascorbic acid and bleaching at 60 °C for 30 s), and they were dehydrated at three temperatures (40, 50, and 60 °C). The drying kinetics were modeled using eight mathematical models to represent the drying curve. The water content was reduced by the drying process. The logarithmic model was selected, as it showed the best fit to represent the drying kinetics of the muña. Activation energy values were similar between treatments (p > 0.05). The increase in temperature decreases the enthalpy and entropy and increases the Gibbs free energy with the effective diffusion coefficient. The drying kinetics allows one to determine the drying time for the storage of the product and the thermodynamic properties for the design of the equipment.Article10.3390/chemengineering70300492-s2.0-85163602897https://hdl.handle.net/20.500.15037/3001enChemEngineeringChemEngineering2305-7084MDPI2023-05-222026-06-27T02:35:15Z2026-06-27T02:35:15Z |
| spellingShingle | kinetics drying models muff thermodynamics Silva Paz, Reynaldo Justino Mateo Mendoza, Dante Kiorkins Eccoña Sota, Amparo Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy |
| title | Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy |
| title_full | Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy |
| title_fullStr | Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy |
| title_full_unstemmed | Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy |
| title_short | Mathematical Modelling of Muña Leaf Drying (Minthostachys mollis) for Determination of the Diffusion Coefficient, Enthalpy, and Gibbs Free Energy |
| title_sort | mathematical modelling of muna leaf drying minthostachys mollis for determination of the diffusion coefficient enthalpy and gibbs free energy |
| topic | kinetics drying models muff thermodynamics |
| topic_facet | kinetics drying models muff thermodynamics |
| url | https://hdl.handle.net/20.500.15037/3001 |
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