| 摘要: | 本研究中利用超臨界二氧化碳從洋甘菊中進行精油的萃取，探討壓力、溫度、流量對精油產率的影響，在實驗規劃中採用中央合成設計(CCD)，每組實驗的條件因子都具有五種水準，實驗設計的壓力條件為2328 psi、2600 psi、3000 psi、3400 psi、3672 psi，溫度條件為34.96℃、37℃、40 ℃、43℃、45.04 ℃，流量條件為80 L/hr、96 L/hr、120 L/hr、144 L/hr、160 L/hr，因本實驗為3因子之中央合成設計，故包含有8個角點，6個軸點以及重複6個中央點實驗。在本實驗中，當實驗條件為為2328 psi、40℃、120 L/hr時，有最大的產率3.48%。
在實驗結束後，分別計算各組實驗組合之洋甘菊精油產率，對實驗結果進行SPSS軟體進行二階迴歸分析，並且使用Matlab作圖軟體作圖獲得迴歸線圖，最後再對二階模型進行分析，在壓力項、溫度項、流量項對產率皆有顯著性，迴歸分析後當實驗條件為2328 psi、45.04 ℃、160 L/hr時，有預估的最大產率3.91%。
最後對比使用索氏萃取法進行洋甘菊精油的租脂肪率萃取與超臨界萃取法所得的洋甘菊精油產率，可得在使用超臨界萃取法能有較好的效益。並再使用傅立葉紅外線光譜儀分析，發現兩者所得產物中成分也大致相同。
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. |
