Drying kinetics, modelling and total flavonoid content of Phyllanthus niruri L. under different drying temperature

W. Agusta, Maisaroh, H. D. Hermansyah, D. Anggraeni, Astuti, Harianto, W. Purwanto, L. P. Manalu

Research output: Contribution to journalConference articlepeer-review


Phyllanthus niruri L. drying kinetics were empirically examined at the temperature of 40 °C, 45 °C, 50 °C, 55 °C, and 60 °C in an air-drying oven. The herbs' aerial components (stems, leaves, and flowers) were picked after 9-10 weeks of planting. The drying procedure ended when the sample weights remained unchanged. The drying time varied from 7 to 20.5 hours. CurveExpert Professional was utilized to establish the optimal modeling fit. According to the statistical analysis, notably for the root mean square error (RMSE), determination coefficient (R2), and residual chi-square (χ2), Midilli-Kucuk has deemed the optimal function for characterizing the kinetics of P. niruri drying. The effective diffusivity and drying activation energy of P. niruri were reported to be 4.050x10-9 m2/s - 1.620x10-8 m2/s and 55.23 kJ/mol, respectively. UV-VIS spectrophotometry was also employed to analyze the effects of the temperature on flavonoid content. The measurement showed that the flavonoid content from all dried herbs varied from 1.18-1.69 %, which already meets the Farmakope Herbal Indonesia's standard. The highest flavonoid content was found at the lowest drying temperature.

Original languageEnglish
Article number012033
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 2022
Event4th International Conference on Agricultural Technology, Engineering, and Environmental Sciences 2022, ICATES 2022 - Banda Aceh, Indonesia
Duration: 9 Aug 202210 Aug 2022


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