利用超臨界流體萃取麻瘋樹籽之酚類成分

Supercritical Fluid Extraction of Phenolic Constituents from Jatropha curcas Seeds

陳芬妮(Tiffany-O Tang)

指導教授 ： 鍾財王

中原大學/工學院/化學工程研究所/碩士(2011年)

https://doi.org/10.6840/cycu201100053

摘要

本篇論文使用超臨界二氧化碳混和乙醇來萃取麻瘋樹中的酚類成分，並利用回應曲面法求得最適化操作條件。回應曲面法利用統計學的理論，推導出二次方程式數學模式，可用來預測並解釋參數與參數間彼此的交互作用及對於實驗結果之影響程度。從結果可發現，萃取時間、溫度及壓力對於萃取酚類並沒有明顯的影響，影響最大的參數是在實驗中額外添加的乙醇的量。而溫度與所添加乙醇的量之間的交互作用也對於萃取酚類有較明確的影響。利用回應曲面法所求的最適化操作參數是，萃取時間51.29分鐘、操作溫度40oC、操作壓力20MPa並添加50wt%的乙醇。利用回應曲面法所預測出的預測值和實際操作得到的實驗值有十分良好的吻合度，從這結果也可以看到回應曲面法所求得的回歸模式有很好的預測效果。

關鍵字

單寧 ； 酚類 ； 植物化學組成 ； 麻瘋樹 ； 超臨界流體萃取

並列摘要

Supercritical carbon dioxide modified with ethanol was used to extract phenolic constituents of Jatropha curcas seeds. Response surface methodology was used to optimize the experimental conditions. Statistical models developed were further improved to best predict the response, the interaction between parameters, and their effect to the yield. It was found that the effect of each parameter on the response became more pronounced when set at or near the optimum condition. The static extraction time, temperature and pressure have negative effect on the yield, while the amount of modifier brought a positive effect on the yield. Interaction between parameters was also observed except that of temperature and amount of modifier. The best operating condition obtained using the model developed is 51.29 minutes static extraction time, 40oC, 20MPa and 50 wt% modifier. The predicted response values from the model are in good agreement with the experimental results, suggesting that the models have good fit on the data and are therefore, sufficient for results prediction.

並列關鍵字

Tannins ； Jatropha curcas ； Phytoconstituents ； Phenolic Compounds ； Supercritical fluid extraction

參考文獻

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