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Publication
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| Title of Article |
Microwave Drying Characteristics and Qualities of Dried Orthosiphon aristatus Leaves |
| Date of Acceptance |
18 October 2017 |
| Journal |
| Title of Journal |
Asia-Pacific Journal of Science and Technology |
| Standard |
TCI |
| Institute of Journal |
Research and Technology Transfer Affairs Division of Khon Kaen University |
| ISBN/ISSN |
2539-6293 |
| Volume |
2018 |
| Issue |
23 No 1 |
| Month |
JANUARY - MARCH |
| Year of Publication |
2017 |
| Page |
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| Abstract |
Orthosiphon aristatus (OA) is widely used in the Southeast Asia as a traditional remedy for various ailments and diseases, such as kidney stones, high blood pressure, diabetes, rheumatism, arthritis, gout and possibly other ailments. Vacuum blanched and unblanched OA leaves were dried in a microwave dryer (MWD) at 450, 720 and 900 W. The drying data were fitted to four thin layer drying models to describe microwave drying characteristics of the OA leaves. Physical and chemical properties were evaluated. The results revealed that Three parameter model was the suitable drying model to describe drying data as a result of the highest coefficient of determination (R2) and the lowest standard error of estimate (SEE) and root mean square error (RMSE). The drying times could be reduced by 66.7% and 50.0% for unblanched and vacuum blanched treatments, respectively with increasing microwave outputs from 450 W to 900 W. Dried OA leaves using MWD at 720 and 900 W in both treatments (vacuum blanched and unblanched) provided the lowest total color difference. Vacuum blanched and dried OA leaves using MWD at 900 W had more porous and less cell damage than other treatments. For chemical properties, vacuum blanched and dried OA leaves using MWD at 900 W also provided the highest total phenolics, sinensetin and eupatorin contents. Vacuum blanched and dried OA leaves using MWD at 900 W were recommended using in the drying process of OA leaves. |
| Keyword |
Antioxidant, drying model, Java tea, microwave drying, Orthosiphon aristatus, scanning electron microscope |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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