Complex sentence: First generation biofuels are derived from sources such as sugarcane and corn starch etc. Sugars present in this biomass are fermented to produce bioethanol, an alcohol fuel which furthermore can be used directly in a fuel cell to produce electricity or serve as an additive to gasoline.
Split into simpler sentences: First generation biofuels are derived from sources such as sugarcane and corn starch etc. Sugars present in these biomass are fermented to produce bioethanol, an alcohol fuel. Which can be used directly in a fuel cell to produce electricity or serve as an additive to gasoline.