Effects of Temperature on Drying of Selected Medicinal Plants: Product Quality and Drying Time


Medicinal Plant Programme, Forest Biotechnology Division, Forest Research Institute Malaysia (FRIM), Kepong 52109. Selangor
Department of Chemical and Environmental Engineering, University Putra MalaysIa. 43400 UPM, Serdang, Selangor.
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Effects of Temperature on Drying of Selected Medicinal Plants: Product Quality and Drying Time


Medicinal and Aromatic Plants Seminar (MAPS 2008)


21st October - 22nd October 2008)

Place Held

The Legend Hotel, Kuala Lumpur


The medicinal plants selected for this study were Orthosiphon aristatus and Chromolaena odorata which are known as pokok misai kucing and pokok kapal terbang In Malaysia. These plants arc reported to contain various beneficial bioactivities. In herbal processing, fresh plants are normally dried before further processing to prevent chemical degradation and fungal Infection. The drying process of herbs is strongly affected by the drying temperature. This study investigated the effects of drying temperature and drying time on the product quality. Total flavonoid analysis was used to determine the change of product quality under different drying temperatures. The results indicated that the total flavonoid content In C. odorata decreased with the increase of drying temperature while a different trend was observed in 0. aristatus. Kinetic data of the drying process was collected to determine the drying time required to achieve the required moisture Content.


Orthosiphon aristatus; Chromolaena odorata; drying: total flavonold analysis


Poster Abstracts


Think Global, Act Local: A New Paradigm In Malaysian Herbal Industry (Prof. Emeritus Dr. Abdul Latif Ibrahim-UNISEL)