| abstract |
Disclosed is a method for adjusting a fatty acid composition in DHA a microbial oil. During 0-80 hours of a fermentation, a carbon-to-nitrogen ratio in a medium is controlled at 3-20:1, and a culture temperature is controlled at 29-32°C. After 80 hours of the fermentation, the carbon-to-nitrogen ratio in a medium is controlled at 1-15:1, and the culture temperature is controlled at 19-28°C, so that a conversion rate of DHA is increased, and a content of other fatty acids is reduced. A DHA-containing microbial oil produced by the method and a composition including the DHA-containing microbial oil are also disclosed. |