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http://dx.doi.org/10.3746/jkfn.2006.35.9.1245

Method for Supplementing Lecithin to Ginseng Extract  

Park, Soon-Hye (Dept. of Life Science, College of Biomedical & Health Science, Konkuk University)
Kim, Il-Woong (Dept. of Life Science, College of Biomedical & Health Science, Konkuk University)
Kim, Dong-Man (Konwoo FP Co. Ltd.)
Kim, Si-Kwan (Dept. of Life Science, College of Biomedical & Health Science, Konkuk University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.35, no.9, 2006 , pp. 1245-1250 More about this Journal
Abstract
This study was carried out to develop the method of preparing lecithin-fortified ginseng extract. Firstly, soybean lecithin was mixed with soybean oil (LCS) in varying ratio (2.5%, 5%, 10% and 20%). Then, one part volume of LCS was mixed with three parts volume of ginseng extract with 10% solid matter content and the mixture was vortexed vigorously. Finally, the mixture was spinned at the speed of 3,000 rpm for 30 minutes to separate oil and aqueous ginseng extract layer (AG). AG was then subjected to qualitative and quantitative analysis of phospholipids and ginsenosides. Fatty acid composition and crude fat content before and after LCS was determined. Stability of lecithin in ginseng extract was determined by analyzing phospholipid content in the one third upper and lower layer of the concentrated AG in Falcon tubes while storing the LCS treated concentrated AG in 4, 25 and 40oC for 6 months. Ratio of lecithin transferred to AG increased with the increase in lecithin content of soybean oil. There was no significant change in fatty acid composition and crude fat content, and ginsenoside content in the ginseng extract before and after LCS treatment. TLC and HPLC pattern of saponin fraction before and after treating the ginseng extract with LCS demonstrated no observable difference. There was no change in lecithin content in the upper and lower one third layer of ginseng extract in the tubes after storing the concentrated AG in 4, 25 and $40^{\circ}C$ for 6 months. Ginsenosides HPLC pattern was not changed when stored the LCS-treated ginseng extract in those conditions for six months, indicating satisfiable stability of the LCS-treated concentrated ginseng extract. From these results, it can be concluded that treatment of the ginseng extract with lecithin containing soybean oil is a labor effective method with satisfiable stability to fortify lecithins to ginseng extract.
Keywords
ginseng extract; lecithin; mixing method; stability; fatty acid change;
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