(SeeNews) - Jul 28, 2011 - Brazil's antitrust regulator CADE yesterday rejected an appeal of the local subsidiary Royal Dutch Shell plc (AMS:RDSA, LON:RDSA), confirming that it has to sell the aviation fuel assets acquired from Brazilian sugar and ethanol producer Cosan (SAO:CSAN3) in 60 days in order keep their biofuel joint venture in Brazil.