(ADPnews) - Feb 2, 2010 - Shares in Brazil's sugar and ethanol player Cosan (SAO:CSAN3) yesterday appreciated 11.03% to BRL 23.65 on the Sao Paulo Bovespa stock exchange after the company said it signed a memorandum of understanding (MoU) with oil major Royal Dutch Shell plc (AMS:RDSA, LON:RDSA) for the creation of a joint venture.