<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper observes a thin-layer drying behaviour of red bell pepper. The red bell pepper (192 samples) was pretreated in osmotic solution of salt of concentrations 5–20% (w/w) at osmotic solution temperatures (30–60 °C) and osmotic process durations (30–120 min) and dried at 60 °C in a locally fabricated convective dryer after preformation of osmotic dehydration pretreatment process. Experimental moisture content values obtained from the drying process were converted to moisture ratios. Seven existing thin-layer drying model equations were used for model equation fitting. The predicted and experimental (observed) moisture ratios were analysed statistically. The statistical indices and rules used to judge and select the model equation that would best describe the process were the highest values of coefficient of determination (<italic>R</italic>2); the lowest values of chi-square (χ2), root mean square error (RMSE), and sum of squares error (SSE). Results showed that the two-term exponential model equation best described the drying behaviour of osmo-pretreated red bell pepper. The ranges of statistical indices of selected two-term exponential model equation are: <italic>R</italic>2 (0.9389–0.9751), χ2 (0.0642–0.1503), RMSE (0.2032–0.1668), and SSE (0.6424–1.5027).
</abstract>

The paper observes a thin-layer drying behaviour of red bell pepper. The red bell pepper (192 samples) was pretreated in osmotic solution of salt of concentrations 5–20% (w/w) at osmotic solution temperatures (30–60 °C) and osmotic process durations (30–120 min) and dried at 60 °C in a locally fabricated convective dryer after preformation of osmotic dehydration pretreatment process. Experimental moisture content values obtained from the drying process were converted to moisture ratios. Seven existing thin-layer drying model equations were used for model equation fitting. The predicted and experimental (observed) moisture ratios were analysed statistically. The statistical indices and rules used to judge and select the model equation that would best describe the process were the highest values of coefficient of determination (R2); the lowest values of chi-square (χ2), root mean square error (RMSE), and sum of squares error (SSE). Results showed that the two-term exponential model equation best described the drying behaviour of osmo-pretreated red bell pepper. The ranges of statistical indices of selected two-term exponential model equation are: R2 (0.9389–0.9751), χ2 (0.0642–0.1503), RMSE (0.2032–0.1668), and SSE (0.6424–1.5027).

Modelling of Thin-Layer Drying of Osmo-Pretreated Red Bell Pepper

Acta Technologica Agriculturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Modelling of Thin-Layer Drying of Osmo-Pretreated Red Bell Pepper"}

The paper observes a thin-layer drying behaviour of red bell pepper. The red bell pepper (192 samples) was pretreated in osmotic solution of salt of...

Modelling of Thin-Layer Drying of Osmo-Pretreated Red Bell Pepper

Published Online: May 21, 2021

Page range: 67 - 71

DOI: https://doi.org/10.2478/ata-2021-0011

Keywords
osmotic dehydration, model fitting, model selection, hypertonic solution, vegetable

© 2021 Michael Mayokun Odewole et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Modelling of Thin-Layer Drying of Osmo-Pretreated Red Bell Pepper

Published Online: May 21, 2021

Page range: 67 - 71

DOI: https://doi.org/10.2478/ata-2021-0011

Keywordsosmotic dehydration, model fitting, model selection, hypertonic solution, vegetable

© 2021 Michael Mayokun Odewole et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
osmotic dehydration, model fitting, model selection, hypertonic solution, vegetable