Abstract
Cost estimates have been prepared for commercial-scale production of ajmalicine-rich Catnaranthus roseus biomass using plant cell culture. At the current state of the technology the cost would be approximately $7.30/lb dry biomass ($3215/kg ajmalicine). Naturally-grown C. roseus roots have a 50% lower ajmalicine concentration but would cost only ca. $0.70/lb ($619/kg ajmalicine). The principal reason for the high cost of the plant cell culture route is not the slow specific growth rate (0.35 day(-1)), but rather the slow specific product accumulation rate (0.26 mg/g day). This rate will have to be increased by a factor of 40 to make the process competitive.
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