Supercritical Carbon Dioxide Extraction of the Essential Oil from Chamomile Using the Experimental Design Method
| Autor: | TSAI, TSUNG-TA, 蔡宗達 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 In this study, supercritical carbon dioxide was used to extract essential oils from chamomile and the effects of pressure, temperature and flow rate on the yield of essential oils were investigated. In this experiment, central synthesis design (CCD) was used. The condition factors of each experiment were of five levels. During the experiment, the experimental design pressure conditions were 2328 psi, 2600 psi, 3000 psi, 3400 psi, 3672 psi, the temperature conditions were 34.96°C, 37°C, 40°C, 43°C, and 45.04°C and the flow rate were 80 L/hr、96 L/hr、120 L/hr、144 L/hr、160 L/hr. This experiment was a factor of three. Due to the central composite design, there are 8 corner points, 6 axial points and 6 repetitions of the central point experiment. In this experiment, the maximum yield was 3.48% when the experimental conditions were 2328 psi, 40 ° C, and 120 L/hr. At the end of the experiment, the yield of essential oil of chamomile was calculated, a second-order regression analysis of the experimental results was conducted to investigate and using Matlab software for mapping. In the figure, a regression line is obtained. Finally, analyze the second-order model. In the pressure, temperature, and flow terms, the yield is significant. Finally, the yield of chamomile oil obtained by renting fat extraction and supercritical extraction of chamomile essential oil by Soxhlet extraction was compared. However, it can have better benefits when using supercritical extraction.And then analyzed by Fourier infrared spectrometer.Found both in the obtained products are also consistent. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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