UPDATE 1-Cosan's subsidiary Raízen taking part in Brazil's refinery bidding round

Brazilian energy group Cosan Ltd said on Tuesday its subsidiary Raízen is taking part in the bidding round organized by state-run oil company Petrobras for the sale of several refineries in the country. Cosan's Chief Financial Officer Marcelo Martins told analysts and investors Raízen was still at the analysis stage regarding the possibility of buying a refinery from Petr