Assessment of various carbon sources and nutrient feeding strategies for Panax ginseng cell culture.
Ginseng (root of Panax ginseng C. A. Meyer) cells were cultivated on medium supplemented with various carbohydrates including sucrose, glucose, and fructose, at initial concentrations ranging from 10 to 110 g/L. Sucrose was shown to be the superior carbon source to the monosaccharides for ginseng cell growth and the optimal concentration was between 30 and 50 g/L. An increase in the initial concentration within this range increased the maximum cell density and growth index significantly, whereas much higher concentrations inhibited cell growth. Feeding of sucrose and some other medium components during the growth (fed-batch mode) was more effective in enhancing the cell growth and biomass productivity, increasing the growth index by more than 60-70% and biomass productivity by more than 50%.
Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Kowloon, Hong Kong. bcjywu@polyu.edu.hk
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