Journal
DRYING TECHNOLOGY
Volume 36, Issue 5, Pages 609-616Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07373937.2017.1351454
Keywords
Diffusivity; herbs; medicinal plant; orthogonal partial least squares discriminant analysis; phytochemicals; principal component analysis
Categories
Funding
- Embrapa [02.10.06.019.00.00, 03.14.04.002.00]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [402654/2012-9]
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In this study, the drying kinetics of Phyllanthus amarus and Phyllanthus niruri were investigated experimentally in an air-drying oven as a function of drying temperature (50, 60, and 70 degrees C). The effects of the air-drying temperature on the phenolic content and the LC-MS profile were also studied. Increases in air-drying temperature reduced the drying time and increased the effective moisture diffusivity. An Arrhenius relationship with activation energy values of 22.828 and 43.129 kJ/mol for P. niruri and P. amarus, respectively, expressed the effect of temperature on the diffusivity. Air drying at 70 degrees C increased the availability of some phenolic compounds. However, the higher temperature negatively affected some sensitive components.
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