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Impact of Korean Ginseng (Panax Ginseng) on Power Generation of Microbial Fuel Cells
Wonjae Kim, Peter Lee, Thomas W. Kim, George Kim, Jonathan Sukhee Chung, Jihwan Alex. Joo and Sung-Jae Chung.
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DOI:10.17265/1934-7375/2015.07.003
This study reports an increase in power generation of a MFC (microbial fuel cell) by the addition of Korean ginseng (Panax ginseng). It was noted that the use of ginseng enhances the microbial anaerobic degradation of cellobiose, a disaccharide that was used as a substrate in the anode chamber of the MFC. The power output of the MFC where ginseng was added showed noticeable enhancement compared to the control MFC. The increase slowly ramped at the initial days and became appreciably higher after the 11th day of incubation in an experiment set up for 16 days duration. It is attributed that the ginseng increases the CO2 production by accelerating the fermentation process. Decrease in CH4/CO2 ratio was observed also due to decrease in methane production per digested cellobiose, the proton donor in the current study. Four ring steroid-like structural moiety Ginsenoside of Panax ginseng seemed to play a beneficial role in the electron transfer from cellobiose to the anode, perhaps by rendering easier electron transfer due to favorable energy level alignments.
MFC, Korean ginseng, Panax, anaerobic degradation.
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