Drying Characteristics of Soybean (Glycine Max) Using Continuous Drying and Intermittent Drying
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Abstract
The effects of drying temperature by continuous and intermittent drying on the drying characteristics of soybean were determined in this study. Among the thin-layer drying models, the Midilli–Kucuk model showed the best fit (R2 > 0.99) to describe the drying of soybean. At 300 min of the effective drying time, the moisture content of continuous drying at 35, 40, and 45 ºC were 9.38 (±0.00), 8.69 (±0.17), and 7.70 % (±0.48), respectively; while the moisture content of intermittent drying at 35, 40, and 45 ºC were 8.28 (±0.21), 7.31 (±0.41), and 6.97 % (±0.07), respectively. The image analysis method for detection of the crack in soybean demonstrated that at the target moisture content (7.7 %), cracked grain ratios with intermittent drying at 35, 40, and 45 ºC were reduced by 52.08, 27.59, and 18.24 %, respectively. With the effective drying time, the activation energy for intermittent drying (9.33 kJ/mol) was significantly lower than that value for continuous drying (21.23 kJ/mol).
Acknowledgements
This work was supported by the “Cooperative Research Program for Agriculture Science & Technology Development, Rural Development Administration, Republic of Korea [grant number PJ012544022017] and a research grant of Kangwon National University in 2016.
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Articles in the same Issue
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Articles in the same Issue
- Modeling Microwave Heating of Frozen Chinese Fast Foods Based on Dielectric Properties
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