|Title:||Extraction, Optimization and Characterization of Essential oil from Vetiver (vetiveria zizanioides) Grass Root by Steam Distillation for Perfume Application|
|???metadata.dc.contributor.*???:||Zebene Kiflie (PhD)|
|Keywords:||Essential oil;Vetiver (vetiveria zizanioides);Steam Distillation;Perfume|
|Abstract:||The extraction of essential oils from natural sources is a highly profitable now a days. Vetiver grass is a viable vegetative absorbent and erosion barrier; in addition the valuable oils extracted from its roots are playing an increasing role in the perfume, food and pharmaceutical industries The yield of essential oil that extracted from the vetiver grass root depends strongly on extraction parameters and method of extraction such as time, temperature and particle size are vital components for efficient processing of essential oil extraction. The experimental investigations undertaken using steam distillation has been determined a maximum average yield of (1.72%) after extraction time of 6 hours, particle size range of (0.425-0.75mm) and temperature of (95oC) and the minimum average yield was obtained (0.15%) was found at extraction time of 2hr, temperature of (75oC) and particle size of (1.075-1.4mm). From this statement, an increasing of extraction time, temperature and decreasing of particle size will increase the percentage yield of oil extract. The investigating of individual and interaction effect has been described by using excel graph and DESIGN EXPERT software (general full factorial) was applied to the extraction processes. The composition of the vetiver oil extracts was analyzed using gas chromatography-mass spectrometry (GC-MS) and Fourier transform infrared spectroscopy (FT-IR) techniques and this showed that a high percentage was obtained ((3S, 3aR, 6R, 8aS)-7, 7-dimethyl-8 methyleneoctahydro-1H-3a,6-methanoazulen-3-yl) methanol in a peak the retention time of (16.780min) and a high percentage of the area was obtained (23.37%).|
|Appears in Collections:||Thesis - Process Engineering|
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