Study on the Solubility of Kiwi Fruit Seed Oil in Supercritical Carbon Dioxide

Transcript

1 2007,40(6): Scientia Agricultura Sinica Study on the Solubility of Kiwi Fruit Seed Oil in Supercritical Carbon Dioxide WU Cai-e 1,2, XU Ke-yong 3, LI Yuan-rui 2, LI Ting-ting 1, LI Wei-xing 4 ( 1 College of Forest Resources and Environment, Nanjing Forestry University, Nanjing ; 2 College of Food Science and Engineering, Northwest University, Yangling ; 3 College of Light Industry and Food Sciences, South China University of Science and Technology, Guangzhou Oil Production Plant No.3 of Changqing Oil Field Branch, Yinchuan ) Abstract: Objective The extracting of kiwi fruit seed oil in supercritical carbon dioxidesc-co 2 and enriching α- linolenic acid from it further depends on the study of solubility of it in SC-CO 2.MethodUsing the method of the dynamic phase equilibria, the paper studied the variation regulations of the kiwi fruit s seed oil solubility of in SC-CO 2. ResultTemperature increasing, and above this pressure the solubility increases with temperature risesthe solubility of kiwi fruit seed oil in SC-CO 2 were g kg -1 CO 2 at pressure of 30 MPa -35 MPa and temperature of 40; the optimal extractive conditions are 30 MPa-35 MPa, 40, and water content of the raw material is 5%-7%. ConclusionThe solubility of kiwi fruit seed oil in supercritical CO 2 is studied by the method of the dynamic phase equilibriaand it can provide references for the extracting of kiwi fruit seed oil and enriching it further. Key words: Kiwi fruit seed oil; Supercritical CO 2 ; Solubility; α- linolenic acid Actinidia chinensis Planch. ActinidiaceaeActinidia Lindl. 23.5%28.85% α % [1] α- [2] α- EPADHA ω sxwucaie@163.com 1942-Tel lyr628@sohu.com

2 [3] α- CO 2 [4] [510] [11, 12] CO 2 [13] CO 2 [14] [15] CO 2 CO 2 [16] CO 2 [17] CO 2 [18] [19] Rodrigues [20] CO 2 CO 2 CO 2 CO 2 CO % FW ml CO 2 D07-12AM/ZM D08-8BM/ZM 1% 1. CO 2 2. CO CO 2 cylinder; 2. CO 2 pump; 3. Non-return valve; 4. Preheater; 5. Equilibrium column; 6. Sampling valve; 7. Test tube; 8. Ice water bath; 9. Buffer pot; 10. Flow meter Fig. 1 Schematic diagram of experimental apparatus used for dynamic phase equilibrium MPa % 4.08%5.6%6.0%7.67%9.23% 100 g MPa CO MPa CO 2 CO 2 CO 2 2 h CO 2 CO 2

3 CO 2 2 h CO 2 CO 2 [18] CO L min -1 CO L α- DPS Duncan s SSR 40 Fig. 3 Effect of pressure on the yield of kiwi fruit seed oil (40 24 CO 2 35 MPa30 MPa 25 MPa20 MPa 24 CO 2 CO 2 45 Fig. 4 Effect of pressure on the yield of kiwi fruit seed oil (45 [18] [19] CO Fig. 2 Effect of pressure on the yield of kiwi fruit seed oil (35 CO 2 CO 2 CO 2 CO 2

4 CO 2 CO 2, R CO 2 CO 2 1 CO 2 Table Solubility of kiwi fruit seed oil in supercritical carbon dioxide (g kg -1 CO 2 ) Temperature () Pressure (MPa) Average A B C D 0.01Different capital letters are significant at 0.01 level MPa P0.01 P Fig. 5 Solubility of kiwi fruit seed oil in supercritical carbon dioxide 27.8 MPa CO 2 CO 2 CO 2 5 CO 2 CO 2 CO %6% CO 2 4% 7.67% CO 2 CO 2 CO 2

5 CO 2 CO 2 5%7% CO 2 CO 2 [13] [14] [17] [18] Fig. 6 Effect of water content on solubility of kiwi fruit seed oil 23.5%28.85% 63.99% [1] CO % 6.41% 15.07% 15.23% 61.82% [16] CO MPa 26.8 MPa g L g L MPa 27.6MPa g L g L g L g L MPa25 MPa 30 MPa 3.8 g L g L g L -1 CO 2 CO MPa 27.8 MPa 27.8 MPa 30 MPa CO 2 30 MPa CO g kg g kg -1 CO 2 35 MPa g kg g kg MPa 35 MPa CO MPa 40 CO 2 5%7% CO 2 CO 2

6 References [1],,.., 2002, 21: Yao M J, Li J X, Zhang Y K. The physical-chemical properties and fatty acid composition of Actinidia chinensis seed oil. Journal of Wuxi University of Light Industry, 2002, 21: (in [2],. α-., 2000, 25 (6): Zhang H M, Liu F Z. Review on function, resource and production of α- linolenic acid. China Oils and Fats, 2000, 25 (6): (in [3],. ω-3., 2001, 32 (1): Wang L H, Huo G C. The biologic functions of ω-3 unsatrated fatty acid. Journal of Northeast Agricultural University, 2001, 32 (1): (in [4].. :, 2000, Zhu Z Q. Technology of Supercritical Fluid -Principle and Application. Beijing: Chemical Industry Press, 2000: (in [5] Yu Z R, Singh B, Rixvi S S H. Solubilities of fatty acid esters, trilycerides, and fats and oil in supercritical carbon dioxide. The Journal of Supercritical Fluids, 1994, 7(1): [6] Bharath R. Phase equilibria of supercritical CO 2 -fatty oil component binary systems. Fliud Phase Equilibria, 1993, 83: [7] Bharath R. Phase equilibria study for the separation and fraction of fatty oil components using supercritical CO 2. Fliud Phase Equilibria, 1992, 81: [8],,,.., 1999, 16(3): Jin J S, Yu E P, Zhang X J, Kang W T. Phase equilibrium calculation of fatty acids and esters with supercritical carbon dioxide. Hebei Journal of Industrial Science and Technology, 1999, 16(3): (in [9],,,. CO 2., 2004, 23: Jin J S, Li Q S, Zhang Z T, Yu E P. Study on phase equilibria of plant oil deodorizer condensates with supercritical carbon dioxide. Chemical Industry and Engineering Progress, 2004, 23: (in [10],,.., 2000, 21(1): Jin J S, Liu K Y, Yu E P. Phase equilibrium calculation of lipid-supercritical carbon dioxide systems. Engineering Chemistry and Metallurgy, 2000, 21(1): (in [11] Adams W R. New apparatus for measurement of supercritical fluid-liquid phase equilibria. American Institute of Chemical Engineers Journal, 1988, 34: [12],,,.., 1995, 17(4): Yun Z, Qian R Y, Shi M R, Shi J. A new alternately circulating apparatus for measurement of high pressure VLE. Journal of Nanjing Univeisity of Chemical Technology, 1995, 17(4): (in [13],,. CO 2., 1998, 19 (3): Qiu R, Chen J, Chen S L. Measurement of phase equilibrium of fish oil fatty acid esters and supercritical CO 2 and their correlation method. Journal of Jiangsu University of Science and Technology, 1998, 19(3): (in [14],,,. CO 2., 2001, 26(3): Fang T, Wu L R, Yun Z, Ding X L. Study on phase equilibrium using supercritical CO 2 to concentrate natural tocopherol. China Oils And Fats, 2001, 26(3): (in [15],,,. CO 2., 2001, 29 (3): Liu Y, Hu C Y, Ding X L, Liu Q S. High pressure phase equilibrium studies of tocopherol and supercritical CO 2. China Oils and Fats, 2004, 29(3): (in [16],. CO 2., 2004, 19(1): Wan Z M, Yun Z. Dtermination of the solubilities of fatty acids in supercritical CO 2. Journal of Chinese Cereals and Oils Association, 2004, 19(1): (in [17],,.. (), 2000, 28(1): Zang Z Q, Zhou X D, Zhou D M. The equilibrium of ginger oil extracted by supercritical carbon dioxide. Journal of Fuzhou University (Natural Science), 2000, 28 (1): (in [18],,,. CO 2., 1997, 12(1): 38-42, 47. Ma H L, Wu S Y, Chen J, Li G W. Experiment study on the solubilities of wheat germ oil in supercritical CO 2. Journal of Chinese Cereals and Oils Association, 1997, 12 (1): 38-42, 47. (in [19,.., 2003, 31(1): 22-25, 29. Chen Y, Yang J C. Studies on the supercritical carbon dioxide extraction of linseed oil. Chemical Engineering, 2003, 31(1): 22-25, 29. (in [20] Rodrigues V M, Rosa P T V, Maroues M O M, Petenate A J, Meireles M A A. Supercritical extraction of essential oil from aniseed using CO 2 : Solubility, kinetics, and composition data. Journal of Agricultural and Food Chemistry, 2003, 51: