The characterization of bio-oil is important for defining design parameters, developing kinetic models, scaling up and decision making related to the production of byproducts and upgrading  and . Many research studies have addressed the conversion of various types of GSK-LSD1 2HCl into bio-oil, but a clear distinction between the differences in the physicochemical characteristics of these bio-oils is not provided in the literature. This article comprehensively reviews the differences between the bio-oils obtained from lignocellulosic and triglyceride biomass sources.
2. Biomass: Source type and composition
Biomass can generally be defined as any hydrocarbon material which mainly consists of carbon, hydrogen, oxygen and nitrogen, although sulfur is also present in lesser proportions. Inorganic species can also be present in significant proportions in some types of biomass. Biomass resources include various natural and derived materials, such as wooden and herbaceous species, wood wastes, bagasse, agricultural and industrial residues, waste paper, municipal solid waste, sawdust, biosolids, grass, waste from food processing, animal wastes, aquatic plants (including algae) , vegetable oils, animal fats and other waste materials .