Rapid expansion supercritical solution (RESS) carbon dioxide as a green technology for ginger rhizome solid oil particles formation / Nur Ain Mohd Zainuddin

Mohd Zainuddin, Nur Ain (2016) Rapid expansion supercritical solution (RESS) carbon dioxide as a green technology for ginger rhizome solid oil particles formation / Nur Ain Mohd Zainuddin. Masters thesis, Universiti Teknologi MARA.

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Abstract

Ginger {Zingiber officinale, Rose.) contains high antioxidant bioactive constituents. Nowadays, ginger extract received great attention due to the increasing application of natural antioxidant in pharmaceutical products. Many studies acknowledged the high amount of natural antioxidant content in ginger as a valuable component to replace synthetic antioxidant that can be used in anticancer activity for cancer treatment. Most of the previous researchers used Supercritical Fluid Extraction (SFE) and conventional extraction technique such as steam distillation and solvent extraction method in ginger extraction. However, the conventional technique for ginger extraction required organic solvent, long extraction time, produce toxic residual and waste water that can be harmful to human and environment. SFE, solvent extraction and steam distillation for ginger extraction produced ginger extract in oil form that need to undergo conventional technique for particle formation. Recent developments in extraction technology allowed extraction of bioactive components in herb to produce solid oil particle instead of liquid oil that need to undergo further conventional techniques for particles formation. Therefore, in this study a clean extraction method that is Rapid Expansion Supercritical Solution (RESS) technology using supercritical carbon dioxide as a solvent (RESS-CO2) was introduced for ginger powder extraction to produce solid oil particle of bioactive components. The extraction was conducted within a range of temperature (40, 45, 50, 55, 60, 65 and 70°C) and pressure (3000, 4000, 5000, 6000 and 7000psi), at a constant flowrate (24 ml/min) for 40 minutes extraction. The extract obtained was characterized using Scanning Electron Microscopy (SEM) and ImageJ Program for solid oil particle size determination and Gas chromatography Mass Spectrometry (GCMS) for component identification. The smallest solid oil particle size 2.22 \xm was obtained at temperature 40°C, and pressure 5000psi. The highest extraction yield 2.41% was achieved at temperature 65°C, and pressure 6000psi…

Item Type: Thesis (Masters)
Creators:
CreatorsEmail
Mohd Zainuddin, Nur AinUNSPECIFIED
Divisions: Faculty of Chemical Engineering
Item ID: 17862
Uncontrolled Keywords: Rapid expansion supercritical solution (RESS); Carbon dioxide; Green technology; Ginger rhizome solid oil
Last Modified: 11 Oct 2018 01:25
Depositing User: Staf Pendigitalan 5
URI: http://ir.uitm.edu.my/id/eprint/17862

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