1. Introduction 2. Physico-chemical characteristics of lignocellulosic biomass 3. Sources of lignocellulosic biomass 4. Microorganisms and their lignocellulytic enzymes 5. Enzymatic Degradation of Lignocellulosic Biomass 6. Regulation of Cell-Wall Degrading Enzymes Production in Fungi 7. Barriers to lignocellulose biodegradation 8. Lignocellulosic pretreatment techniques 9. Bioprocessing of Lignocellulosic biomass 10.New trends in application of nanotechnology for the pretreatment of lignocellulosic biomass 11. Nanotechnology in Lignocellulosic composites 12. Valuable Chemicals and Products from Lignocellulosic Biomass 13.Techno-economic and environmental evaluation 14. Future perspectives