Extraction of Phytochemicals from Grains of Paradise Using Supercritical Carbon Dioxide

Abstract

Abstract. Supercritical carbon dioxide (SCCO2) is one of the green methods to extract plant matters substances. In this study, SCCO2 has been applied as a media to extract the grains of paradise seeds substances at temperatures of 40 -80 o C and pressures of 20 -40 MPa using a semi-continuous flow-type system. Results of FT-IR spectra analysis showed that the grains of paradise seeds substances were extracted by SCCO2. The SEM images of the grains of paradise seeds residues also showed that the physical changes of the grains of paradise seeds surface occurred after SCCO2 extraction. The main compounds in extracts were gingerols, shogaols, and paradols. However, the GC-MS may only identify paradol compounds due to gingerols, shogaols, and paradols are homologous series of phenolic ketones and paradols was more stable than gingerols and shogaols. The yields of gingerols, shogaols, and paradols were 9.12, 3.90, and 4.42 mg/g sample, respectively and affected by extraction temperatures and/or extraction pressures.

Lipids from Vitellaria paradoxa Gaertn Seeds by Supercritical CO2: Extraction and Optimization of Parameters by Response Surface Methodology

“…This revealed that they might be destroyed and removed during treatment of supercritical CO2 extraction on Vitellaria paradoxa Gaertn matrix. Similar results were obtained by Ono et al 2017 [22], they conducted experiments on phytochemicals extraction from grains of paradise seeds by using supercritical CO2. They reported that the functional groups intensities which exist in the grains of paradise seeds declined after introducing supercritical CO2.…”

Enhancement of Lipid Extraction from Soya Bean by Addition of Dimethyl Ether as Entrainer into Supercritical Carbon Dioxide

“…Supercritical CO 2 (SC-CO 2 ) is the most commonly used extraction solvent for supercritical fluid extraction and is neither toxic nor flammable. It exhibits selectivity because of its low viscosity, high diffusivity, and density between that of a liquid and a gas [1][2][3][4]. SC-CO 2 is suitable for the extraction of non-polar substances; for example, vegetable neutral lipids such as C16:0, C18:0, C18:1, and C18:2 have been selectively extracted from Vitellaria paradoxa Gaertn seeds [2].…”