Abstract
Synthesis of β-carotene by mated strains of Blakeslea trispora in shaken-flask culture was considerably enhanced by adding either 5% kerosene after 2 days of fermentation or acid-refined kerosene at the start of fermentation to a grain-based medium that also contained a natural lipid, nonionic detergent, and β-ionone; average yields of 17,500 μg per g of dry fermentation solids (86,000 μg per 100 ml of medium) were attained when refined kerosene was used. Almost all of the carotene was retained within the mycelium. Peak yields were achieved in 5 days.
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Selected References
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