Optimization of Heat Pump Drying Process for Schefflera heptaphylla Leaves by the Response Surface Methodology
Authors: Nguyen Tan Thanh, Nguyen Thi Uyen Nhi, Tran Dinh Thang, Nguyen Thi Huyen
Indian Journal of Agricultural Research
: 58/3 : 407-414
Publishing year: 7/2024
Background: Schefflera heptaphylla is a species of plant living in the forest, containing numerous bioactive compounds beneficial
for human health. The efficient extraction of these bioactive compounds from the plant while minimizing losses is a currently
highlighted issue.
Methods: In this research, the impact of three variables: drying time (min), drying air velocity (m/s) and drying air temperature (C)
on the reactions, including loss of total phenolic (TPCL), total flavonoid content loss (TFCL) and moisture content (MC) investigation
of Schefflera heptaphylla leaves was conducted using the central complex design (CCD) within the framework of the methodology
reaction surface method (RSM).
Result: The optimal conditions obtained from the response surface method were 48C, 1.9 m/s and 600 min. The experimental
values at the optimal conditions of TPCL, TFCL and MC are 17.22±0.20%, 14.83±0.15% and 8.47±0.12%, respectively. Crude fiber
content, moisture content, total ash and total fat content of raw materials have been identified.
Heat pump drying, Response surface methodology, Schefflera heptaphylla, Total flavonoid content loss, Total phenolic content loss.
