A Review on Second Generation (2G) Lactic Acid Production from Lignocellulosic Derived Sugar to Valorize Waste Stream

Lactic acid production is a high- value molecule with vast number of industrial applications. In the global market it has a high value. Currently, the most prominent use of Lactic acid is the production of polylactic acid to replace plastics from the petrochemical industry. A great rapid change is required for the rising worldwide concerns about the excess of non- degradable plastics used daily and the accumulation of this material in nature.Lactic acid production from the lignocellulosic biomass reduces the human dependence on oil for both energy and fuel production as well as for the production plastics and other chemicals. In recent years, its use for new applications such as production of biodegradable and biocompatible polymers, green solvents and oxygenated chemicals have received considerable attention. Many large scale applications are hindered because of high production cost of lactic acidrelatively. In this scenario an economical alternate for lactic acid production is from the renewable raw materials especially second-generation substrate such as lignocellulosic bio mass. We can associate lactic acid production by fermentation by 2G – sugars with several bio refinery models such as biofuels, bio based chemicals, and specialty products. Now a days, lignocellulose biomass is the most abundant renewable bio source to produce 2G Lactic Acid available around the world. Thus, 2G substrate i.e., lignocellulosic biomass is a promising feed stock for sustainable biofuel, bio products.