This optimistic scenario of application has given high attention of biomass in the past few decades, which is explicit that biomass is defined as non-deforestation based on the principle of environ- ment protection.
With the development of both plant biology and biotechnology, biomass has undergone rapid improvement within the last four generations. The current review summarized the different genera- tions in Fig. 3. Natural plants are one of the main components in the first generation of biomass. These green plants include all land based vegetation, for instance, trees and crops. Among plants, crops are the main kind of first generation biomass, because of the high content of sugarcane with bioethanol and biodiesel being
the typical targets [10,11]. As first generation biofuels, they are known for their manifold of problems, which have negatively impacted food prices by the utilization of grains, such as corn and canola. In some cases of the conversion of first generation bioproducts were produced, even products with negative carbon balance, which did not reduce the greenhouse gases much