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Drying behaviour of Andrographis paniculata in vacuum drying


Hee, Yen Yi and Chong, Gun Hean (2015) Drying behaviour of Andrographis paniculata in vacuum drying. International Food Research Journal, 22 (1). pp. 393-397. ISSN 1985-4668; ESSN: 2231-7546


Hempedu bumi (Andrographis paniculata, AP), also known as the king of bitters, is an herb commonly found in Asian communities for medicinal usage. The drying behaviour of AP at temperatures of 40, 50, and 60°C with vacuum pressures of 10 and 30 kPa was investigated in this study. The data were then fitted with semi-theoretical and theoretical thin-layer drying models. The results reveal that the drying time is significantly (p<0.05) affected by temperature and pressure. A two-term, thin-layer model was determined as the most suitable model to fit the drying behaviour of AP. The effective diffusivity and active energy for moisture diffusion were 10-13 m2/s and 33.4 kJ/mol, respectively.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
Publisher: Faculty of Food Science and Technology, Universiti Putra Malaysia
Keywords: Andrographis paniculata; Drying kinetics; Hempedu bumi; Vacuum drying
Depositing User: Nabilah Mustapa
Date Deposited: 27 Jan 2016 00:51
Last Modified: 27 Jan 2016 00:51
URI: http://psasir.upm.edu.my/id/eprint/36090
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