本研究中使用超臨界二氧化碳由玉檀木中進行精油的萃取，用改變壓力、溫度對精油產率的影響，在實驗的規劃上使用 32實驗設計，每組實驗的條件因子都具有三種水準，在實驗過程中，實驗設計的壓力條件為2800psi、3500psi、3500psi，溫度條件為313K、323K、333K。實驗結束後，對實驗結果進行EXCEL軟體進行二階迴歸分析，探討精油的產率在壓力項、溫度項、壓力平方項、溫度平方項、壓力和溫度交互作用項具有顯著性，使用MATLAB繪製成反應曲面圖及等高線圖，並且使用EXCEL作圖軟體作圖獲得迴歸線圖，最後再對二階模型進行分析得到本實驗翻為中之最佳操作條件及最佳的產率，之後跟使用索氏萃取法進行玉檀木精油的粗脂肪率萃取對比，與超臨界萃取法所得的玉檀木精油產率是否一致。
In this study, supercritical carbon dioxide was used to extract essential oils from sandalwood, and the effects of changing pressure and temperature on the yield of essential oils were used in the experimental planning. 32 experimental designs were used. The condition factors of each group of experiments had three levels. During the process, the experimentally designed pressure conditions are 2800psi, 3500psi, and 3500psi, and the temperature conditions are 313K, 323K, and 333K. After the experiment, the EXCEL software was used to carry out a second-order regression analysis on the experimental results to explore that the yield of essential oils was significant in the pressure term, temperature term, pressure square term, temperature square term, and interaction term between pressure and temperature. MATLAB was used to plot the reaction. Surface map and contour map, and use EXCEL graphics software to draw a regression line map, and finally analyze the second-order model to obtain the best operating conditions and best yield in this experiment, and then use the Soxhlet extraction method. To compare the crude fat rate extraction of the essential oil of jade sandalwood, whether it is consistent with the yield of the essential oil of jade sandalwood obtained by the supercritical extraction method.
