(SeeNews) - Sep 30, 2011 - Raizen, the ethanol joint venture of Brazilian sugar and ethanol producer Cosan (SAO:CSAN3) and Anglo-Dutch oil major Shell (AMS:RDSA, LON:RDSA), will seek further partnerships with other biotechnology companies along the lines of the agreement reached with US biotech firm Codexis Inc (NASDAQ:CDXS).