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Drying Characteristics and Mitragynine Content of Kratom Leaves
Paper Type  |
Contributed Paper |
Title |
Drying Characteristics and Mitragynine Content of Kratom Leaves |
Author |
Juntima Chungsiriporn, Prukraya Pongyeela, Nirana Chairerk, Jutarut Iewkittayakorn and Wiriya Duangsuwan |
Email |
juntima.c@psu.ac.th |
|
Abstract: Drying is an essential process for preserving agricultural products. Most natural biological compounds are sensitive and easily degraded under drying conditions. This study investigated the effects of drying temperature (40, 50, 60, and 70°C), air velocity (0.05, 0.10, 0.15, and 0.20 m/s), and feed amount (0.60, 0.80, 1.00, and 1.30 kg/m2) on the moisture ratio, drying rate, mitragynine (MG) content, and specific energy consumption (SEC) of kratom leaves. The results showed that temperature, air velocity, and the quantity of kratom leaves significantly affected the drying process. The drying kinetics of kratom leaves were best explained by the Midilli-Kucuk model. The R2, reduced χ2, SSE, and RMSE values of the Midilli-Kucuk model under hot air drying varied from 0.9965 to 0.9993, 0.000075 to 0.000358, 0.001124 to 0.007869, and 0.007692 to 0.01740, respectively, for kratom leaves dried at 40, 50, 60, and 70°C. The MG content of dried kratom leaves at 40°C was the highest at 10.10 mg/g. The lowest SEC values, which corresponded to the highest amount of MG in the dried leaves, were achieved at a drying temperature of 40°C, an air velocity of 0.2 m/s, and a kratom leaves feed amount of 0.60 kg/m2. |
|
Article ID |
e2023059 |
Received Date |
2023-07-04 |
Revised Date |
2023-08-18 |
Accepted Date |
2023-09-16 |
Full Text |
Download |
Keyword |
kratom leaves, drying, mathematical modeling, mitragynine content |
Volume |
Vol.50 No.6 (November 2023) |
DOI |
https://doi.org/10.12982/CMJS.2023.059 |
Citation |
Chungsiriporn J., Pongyeela P., Chairerk N., Iewkittayakorn J. and Duangsuwan W., Drying Characteristics and Mitragynine Content of Kratom Leaves, Chiang Mai Journal of Science, 2023; 50(6): e2023059. DOI 10.12982/CMJS.2023.059. |
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