Process optimization of supercritical CO2 extraction of Roselle using response surface methodology

Authors

  • Wong Lee Peng Universiti Teknologi Malaysia
  • Siti Hamidah Mohd Setapar SHE Empire Sdn Bhd
  • Hasmida Mohd Nasir Universiti Teknologi Malaysia

DOI:

https://doi.org/10.11113/mjfas.v16n1.1651

Keywords:

Roselle (Hibiscus sabdariffa), supercritical CO2 extraction, response surface methodology, fatty acid composition, optimization

Abstract

Hibiscus sabdariffa, commonly known as Roselle, is a native plant in Malaysia that is rich with bioactive compounds. In the present study, supercritical carbon dioxide (SC-CO2) extraction of Roselle was investigated. The optimum particle size (212µm, 300µm, 425µm, 600µm, and 710µm) to obtain highest yield was pre-determined. The effects of two operating parameters, pressure (20MPa, 25MPa, and 30MPa) and temperature (40 ºC, 60 ºC, and 80 ºC) on extraction yield were studied using response surface methodology (RSM). From the experimental data, the optimum conditions were achieved using particle size 300µm, pressure 27.5MPa, and temperature 50.8 ºC. Using the optimized parameters, the highest extraction yield was predicted to be 163.26 mg-extract/g-dried sample. The validation experimental results were consistent with the predicted values.

 

Author Biographies

Wong Lee Peng, Universiti Teknologi Malaysia

Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu Sina Institute for Scientific and Industrial Research

Hasmida Mohd Nasir, Universiti Teknologi Malaysia

Faculty of Chemical and Energy Engineering

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Published

02-02-2020