A review of Bioethanol production through biomass bioprocessing

In order to preserve fossil fuel reservoirs, it is necessary to find renewable resources. One option is biomass that can be converted to biofuels. One of the most important biofuels is ethanol that has been regarded as the best substituent for benzene. Bioconversion is one of the bioremediation methods in which, biomass is converted to biofuel. In this process carbohydrate content is converted to simple sugars and then fermented to ethanol. With regard to the unique structure of lignocellusic materials the pretreatment is necessary that can be done by physical and chemical methods. In saccharification, the biomass is degraded to 5 and/or 6 carbon sugars and then the fermenter microorganism is selected based on the produced sugar. In order to improve final yeild, usually this two steps will be done simulatneously. One of the most important subjects in biofuel production is development of fermentation methods to reach maximum yield one of them is biphasic fermentation.