Brazil, the world's largest producer and exporter of ethanol made from sugarcane, boosted the mandatory biofuel content in gasoline sold at pumps as producers reap a record crop.

Fuel distributors will have to add a 23 percent ethanol content to all gasoline sold to service stations starting Nov. 20, rising from a 20 percent mandate now, the agriculture ministry said in a statement. Gas stations throughout the country also sell the biofuel separately to power flex-fuel cars that can run just on ethanol, gasoline or any blend of the two.