The biofuel is ultimately derived from the starch, sugar, animal fats, and vegetable oil that these crops provide. Biodiesel demand has been seriously affected by the pandemic – it will increase, but the question is by how much, said Mr Farrow. While in countries like the US and Brazil biofuels are mainly made from maize or sugar cane, the main sources in the UK are wheat and used cooking oil. It is important to note that the structure of the biofuel itself does not change between generations, but rather the source from which the fuel is derived changes. First generation biofuels are produced directly from food crops. Major Biodiesel Producers by Region . … Wheat and maize record crops face demand uncertainties Even though the United States leads in total biofuel production, the vast majority of what is produced is ethanol and it is produced using first-generation food crops… The demand for biofuel crops means greater demand on rainforest land. The UK government should set a limit on the use of biofuels from food crops to minimise these indirect land use changes, the report says – but it doesn’t say what the limit should be.