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http://dx.doi.org/10.5142/jgr.2012.36.2.198

Increase in the Contents of Ginsenosides in Raw Ginseng Roots in Response to Exposure to 450 and 470 nm Light from Light-Emitting Diodes  

Park, Sang-Un (Department of Crop Science, Chungnam National University)
Ahn, Deok-Jong (Punggi Ginseng Experiment Station, Gyeongbuk Provincial Agricultural Research & Extension Services)
Jeon, Hyeon-Jeong (Punggi Ginseng Experiment Station, Gyeongbuk Provincial Agricultural Research & Extension Services)
Kwon, Tae-Ryong (Punggi Ginseng Experiment Station, Gyeongbuk Provincial Agricultural Research & Extension Services)
Lim, Hyoun-Sub (Department of Applied Biology, Chungnam National University)
Choi, Bo-Seong (School of Biotechnology and LED-IT Fusion Technology Research Center, Yeungnam University)
Baek, Kwang-Hyun (School of Biotechnology and LED-IT Fusion Technology Research Center, Yeungnam University)
Bae, Han-Hong (School of Biotechnology and LED-IT Fusion Technology Research Center, Yeungnam University)
Publication Information
Journal of Ginseng Research / v.36, no.2, 2012 , pp. 198-204 More about this Journal
Abstract
An light-emitting diode (LED)-based light source was used as a monochromatic light source to determine the responses of raw ginseng roots (Panax ginseng Meyer) to specific emission spectra with respect to the production of ginsenosides. The ginsenoside content in the ginseng roots changed in response to the LED light treatments at $25^{\circ}C$ relative to the levels in the control roots that were treated in the dark or at $4^{\circ}C$ for 7 d. Ginseng roots were exposed to LEDs with four different peak emission wavelengths, 380, 450, 470, and 660 nm, in closed compartments. Compared with the control $4^{\circ}C$-treated roots, roots that were treated with 450 and 470 nm light showed a significantly increased production of ginsenosides (p<0.05), with increases of 64.9% and 74.1%, respectively. The contents of the ginsenosides $Rb_2$, Rc, and $Rg_1$ were significantly higher (p<0.05) in the 450 and 470 nm-treated root samples. The ratio of protopanaxadiol ginsenosides ($Rb_1$, $Rb_2$, Rc, and Rd) to protopanaxatriol ginsenosides ($Rb_1$, $Rb_2$, Re, and Rf) was significantly higher (p<0.05) in the 450 and 470 nm-treated root samples than in the control $4^{\circ}C$-treated roots. This is the first report that demonstrates the increase and conversion of ginsenosides in raw ginseng roots in response to exposure to LED light.
Keywords
Panax ginseng; Ginsenosides; Light-emitting diode;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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