EFFECT OF TEMPERATURE AND AIR RECIRCULATING RATE ON THE WEIGHT LOSSES OF MINT UNDER HYBRID SOLAR DRYING CONDITIONS
El-Kashoty, M., Khater, E., Bahnasawy, A., Nagy, K. (2020). EFFECT OF TEMPERATURE AND AIR RECIRCULATING RATE ON THE WEIGHT LOSSES OF MINT UNDER HYBRID SOLAR DRYING CONDITIONS. EKB Journal Management System, 37(4), 357-372. doi: 10.21608/mjae.2020.46021.1010
Mahmmoud M. El-Kashoty; El-Sayed G. Khater; Adel H. Bahnasawy; Khaled S. Nagy. "EFFECT OF TEMPERATURE AND AIR RECIRCULATING RATE ON THE WEIGHT LOSSES OF MINT UNDER HYBRID SOLAR DRYING CONDITIONS". EKB Journal Management System, 37, 4, 2020, 357-372. doi: 10.21608/mjae.2020.46021.1010
El-Kashoty, M., Khater, E., Bahnasawy, A., Nagy, K. (2020). 'EFFECT OF TEMPERATURE AND AIR RECIRCULATING RATE ON THE WEIGHT LOSSES OF MINT UNDER HYBRID SOLAR DRYING CONDITIONS', EKB Journal Management System, 37(4), pp. 357-372. doi: 10.21608/mjae.2020.46021.1010
El-Kashoty, M., Khater, E., Bahnasawy, A., Nagy, K. EFFECT OF TEMPERATURE AND AIR RECIRCULATING RATE ON THE WEIGHT LOSSES OF MINT UNDER HYBRID SOLAR DRYING CONDITIONS. EKB Journal Management System, 2020; 37(4): 357-372. doi: 10.21608/mjae.2020.46021.1010

EFFECT OF TEMPERATURE AND AIR RECIRCULATING RATE ON THE WEIGHT LOSSES OF MINT UNDER HYBRID SOLAR DRYING CONDITIONS

Misr Journal of Agricultural Engineering
Article 4, Volume 37, Issue 4, October 2020, Page 357-372  XML PDF (677.11 K)
Document Type: Original Article
DOI: 10.21608/mjae.2020.46021.1010
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Authors
Mahmmoud M. El-Kashoty1; El-Sayed G. Khater email 2; Adel H. Bahnasawy3; Khaled S. Nagy4
1PhD. Stud., Ag. Eng. Dept., Fac. of Ag., Benha U., Egypt.
2Assoc. Prof. of Ag. Eng., Fac. of Ag., Benha U., Egypt.
3Prof. of Ag. Eng., Fac. of Ag., Benha U., Egypt.
4Head of Res., Food Tech. Res. Inst., Ag. Res. Center, Giza, Egypt.
Abstract
The main aim of this study is to study the effect of drying temperature and air recirculation percentages on the weight losses of mint, drying time, final moisture content and drying rate. Fresh basil was dried using different drying temperatures (50, 55 and 60 °C) and different air recirculating percentages (70, 80 and 90 %). Air temperature on the drying chamber, Weight losses, moisture content and drying rate were recorded. The obtained results indicated that the air temperature of the drying chamber ranged from 20 to 50, 13 to 55 and 18 to 60 °C for 50, 55 and 60 °C drying temperature, respectively. The accumulated weight loss of mint leaves increased from 79.93 to 80.10, 79.99 to 80.15 and 80.05 to 80.29 %, when the drying temperature increased from 50 to 60 °C, respectively, for 70, 80 and 90 % air recirculating. The moisture content of mint leaves ranged from 2.78 to 402.01, 0.80 to 404.02 and 1.61 to 408.13 % d.b. for 50, 55 and 60 °C drying temperature, respectively. The drying rate of mint leaves decreases with increasing drying temperature and air recirculating percentage. The total costs of dried mint decreased from 8.60 to 7.44, 9.73 to 8.03 and 10.91 to 8.85 L.E kg-1 of mint, when the air recirculating percentage increased from 70 to 90 %, respectively at 50, 55 and 60 °C drying temperature.
Keywords
Mint; weight loss; moisture content; drying rate; costs
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