Optically pure isomers of lactic
acid can be produced only by fermentation process. Currently, lactic
acid production by fermentation uses food feedstock such as
starches and sugars (1), which could cause food shortages and price
increases. Therefore, use of a non-food feedstock such as lignocellulosic
biomass offers a non-competitive, cost-attractive, and environmentally
friendly substrate for the production of lactic acid (4).