Supercritical Carbon Dioxide Extraction of the Essential Oil in Millet Germ Using Experimental Design Method
2017
Hochschulschrift
Zugriff:
105
This research indicates that the effects of each factor and the interaction among the factors to the yield of millet germ essential oil by changing pressure, temperature and flow rate in the supercritical carbon dioxide fluid extraction. We introduced the central composite design into our experiment, and used the regression analysis to analyze the second order reaction curve model. Because CCD takes axial points into account, this results every factors has 5 levels. In the semi-mobile experiment, we set our pressure conditions at 2396, 2600, 2900, 3200 and 3404 psi; temperature conditions at 312, 315, 318, 321 and 323 K, and flow rate conditions at 90L/hr, 108L/hr, 135L/hr, 162L/hr, and 180L/hr. Because this is a CCD of 3 factors, this experiment has 8 corner points, 6 axial points, and repeat 6 central points, total has 20 results. To find out the significance of each factor and of the interaction among factors, we used the second regression analysis to analyze the results, and gained the best production of essential oil by using the second order model to analyze the contour chart and reaction surface chart, which were made by the MATLAB software. Later we checked whether the results from supercritical carbon dioxide fluid extraction are as same as the results from the soxhlet extraction, and used the solids & liquids FT-IR to check whether the composition of essential oil from these two extractions is the same.
Titel: |
Supercritical Carbon Dioxide Extraction of the Essential Oil in Millet Germ Using Experimental Design Method
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Autor/in / Beteiligte Person: | TASI, ZHENG-HAN ; 蔡政翰 |
Link: | |
Veröffentlichung: | 2017 |
Medientyp: | Hochschulschrift |
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