Browse > Article

Microwave-Assisted Extraction of Effective Constituents from Ginseng  

Lee, Dong-Won (Department of Chemical Engineering, University of Seoul)
Park, Young-Sin (Department of Chemical Engineering, University of Seoul)
Kim, Dok-Chan (Department of Chemical Engineering, University of Seoul)
Publication Information
Applied Chemistry for Engineering / v.16, no.3, 2005 , pp. 427-433 More about this Journal
Abstract
The use of the microwave-assisted process for the extraction of effective constituents from ginseng was investigated at various operating conditions. The influence of solvent (ethanol-water, 50% v/v) to ginseng ratio, particle size and applied microwave power on the efficiency of extraction was examined. The microwave extraction system used was custom manufactured so that the intensity of microwave may be varied by using anode-voltage controller. It was found that the ratio of 6 : 1 (vol/mass) gave a good extraction efficiency. Small particle size gave high yield but it caused difficulties in the separation of solvent from the sludge. The higher power was no guarantee of the efficient extraction yield. The more important factor than the employed power was the adequate temperature under sufficient contact time. Using deionized-water as swelling agent, the degree of swelling of ginseng by microwave heating and conventional heating in water-bath was also studied. It was observed that the microwave heating enhanced the swelling much more than the conventional heating. It is believed that this enhanced swelling was responsible for the rapid microwave-assisted extraction rate.
Keywords
microwave; extraction; ginseng; swelling;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. H. Kwon, J. M. R. Belanger, and J. R. J. Pare, J. Agric. Food. Chem., 51, 1807 (2003)   DOI   ScienceOn
2 Y. Y. Shu, M. Y. Ko, and Y. S. Chang, Microchemical Journal, 74, 131 (2003)   DOI   ScienceOn
3 W. Vongsangnak, J. Gua, S. Chauvatcharin, and J. Zhong, Biochemical Engineering Journal, 18, 115 (2004)   DOI   ScienceOn
4 M. S. Venkatesh and G. S. V. Raghavan, Biochemical Engineering, 88, 1 (2004)
5 H. Prosetya and A. Datta, J. Microwave Power and Electromagnetic Energy, 26, 215 (1991)   DOI
6 X. Pan, G. Niu, and H. Liu, Chemical Engineering and Processing, 42, 129 (2003)   DOI   ScienceOn
7 R. Meredith, Engineers' Handbook of Industrial Microwave Heating, The Institution of Electrical Engineers, London, U. K. (1998)
8 B. Jonathan, Biological Performance of Materials Fundamentals of Biocompatibility, 3rd ed. Marcel Dekker (1999)
9 KMHW, Korean Food Standard Code, Korean Ministry of Health and Welfare, p. 507, Seoul (1997)
10 H. M. Kingston and S. J. Haswell (Eds), Microwave-Enhanced Chemistry, Fundamentals, Sample Preparation and Applications, American Chemical Society, Washington D. C. (1997)
11 B. Mompon, M. Surbled, B. Lemaire, and J. Anizon [15b], New Extraction Technology 21st Century, AIChE Spring Meeting (2000)
12 N. Abu-Ghannam and B. McKenna, J. Food Engineering, 32, 391 (1997)   DOI   ScienceOn
13 A. K. Datta, Chem. Engr. Prog., 86, 47 (1990)
14 R. G. Diagne, G. D. Foster, and S. U. Khan, J. Agric. Food. Chem., 50, 3204 (2002)   DOI   ScienceOn
15 J. R. Pare, J. M. R. Belanger, and M. M. Punt, U. S. Patent 6,061,926 (2000)