Two primary methods are used to extract lignin from plants: The first is to dissolve and eradicate wood constituents excluding lignin, while the second is to separate lignin as a soluble component, while the rest are insoluble. However, the first method is widely used . Six methods are used for the extraction of lignin, namely, kraft pulping, sulfur pulping, soda pulping, organosolv pulping, hydrothermal pulping, and diluted acid pulping. Out of which kraft pulping is widely used. The process of lignin production affects physical and chemical properties, like molecular weight, structure, composition, and solubility of the lignin . Below, the major lignin extractions are discussed.