UC Davis uses new approach to boost algae oil production

In California, taking an approach similar to that used for discovering new therapeutic drugs, chemists at the University of California, Davis, have found several compounds that can boost oil production by green microscopic algae. They screened 83 compounds for their effects on growth and oil production in four strains of microalgae. They identified several that could boost oil production by up to 85 percent, without decreasing growth.

Among the promising compounds were common antioxidants such as epigallocatechin gallate, found in green tea, and butylated hydroxyanisole (BHA), a common food preservative. The team has carried out growth experiments in culture volumes of up to half a liter. They calculate that some of the chemicals they analyzed would be cost-effective when scaled up to a 50,000 liter pond. After oils have been extracted from the algae, the remaining mass can be processed for animal feed or other uses.