實驗設計法用於超臨界二氧化碳萃取牛樟芝精油

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Title:	實驗設計法用於超臨界二氧化碳萃取牛樟芝精油 Supercritical Carbon Dioxide Extraction of the Essential Oil in Antrodia Cinnamomea Using Experimental Design Method
Authors:	吳柏諺
Contributors:	化學工程與材料工程學系奈米材料碩士班
Keywords:	超臨界二氧化碳萃取牛樟芝中央合成設計索氏萃取可攜式傅立葉紅外線光譜儀 Supercritical Carbon Dioxide Extraction Antrodia Cinnamomea Central Composite Design Soxhlet Extraction Portable FT-IR
Date:	2017
Issue Date:	2017-09-20 11:58:37 (UTC+8)
Abstract:	在本研究中利用超臨界二氧化碳從牛樟芝中進行精油的萃取，探討壓力、溫度、流量對精油產率的影響，在實驗規劃上我們採用中央合成設計 (CCD) 對於二階反應曲面模型進行迴歸，因為中央合成設計考慮軸點，這造成了實驗因子都具有五種水準，在這個設計裡包含了8個角點、6個軸點以及重複6個中央點的實驗，一共有20組，在實驗過程中，實驗設計的壓力條件為2000 psi、2405 psi、3000 psi、3595 psi、4000 psi，溫度條件為35 °C、39 °C、45 °C、51 °C、55 °C，流量條件則為90 L/hr、108 L/hr、135 L/hr、162 L/hr、180 L/hr，接著使用重量百分比公式分別計算各種實驗組合之牛樟芝精油產率，並對實驗結果進行二階迴歸分析，再利用MATLAB軟體將迴歸數據繪製成反應曲面圖與等高線圖，來探討所得各項因子與因子間交互作用的顯著性，以及分析最佳的萃取條件。再來對比使用索氏萃取法進行牛樟芝精油的粗脂肪率萃取，與超臨界流體萃取實驗結果其產率是否一致，並使用可攜式傅立葉紅外線光譜儀分析其兩種萃取法得到的精油成分是否一致。 In this study, we used the supercritical carbon dioxide fluid to extract essential oil from the Antrodia cinnamomea, and study the effects of pressure, temperature and flow rate on the yield of essential oil. In the experimental planning, we have introduced the central composite design (CCD) for fitting the second-order response surface model. Because CCD takes the axial points into account, this results five levels in each experimental factor. This design include 8 corner points, 6 axial points, and repeat 6 central points, so total has 20 cases. In the experiment the pressure condition is 2000 psi, 2405 psi, 3000 psi, 3595 psi and 4000 psi, the temperature condition is 35 °C, 39 °C, 45 °C, 51 °C and 55 °C, and the flow rate condition is 90 L/hr, 108 L/hr, 135 L/hr, 162 L/hr and 180 L/hr. To study the significance of the interaction among each factor and find out the best extraction condition, we calculated the yield of each case by using the weight percentage formula, analyzed the results by using the second order model, and drew the data, which from the second order model, into the reaction surface chart and contour chart by using MATLAB software. Later we checked whether the results from supercritical carbon dioxide fluid extraction is as same as the results from the soxhlet extraction, and used the Portable FT-IR to check whether the composition of essential oil from these two extractions is the same.
Appears in Collections:	[Department of Chemical & Materials Engineering] thesis

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