An overview: Importance of lignin and different analytical approaches to de-lignify it from plants
1 Department of Chemistry, College of Science, Al-Nahrain University, P. O. Box: 64021, Baghdad, Iraq.
2 College of Pharmacy, University of Thi-Qar, Thi Qar, Iraq.
3 Forensic DNA Center for Research and Training, College of Science, Al-Nahrain University, Baghdad, Iraq.
4 Directorate of Materials Research, Ministry of Higher Education and Scientific Research, Baghdad, Iraq.
Review Article
GSC Advanced Research and Reviews, 2021, 08(03), 119–129.
Article DOI: 10.30574/gscarr.2021.8.3.0182
Publication history:
Received on 26 July 2021; revised on 16 September 2021; accepted on 18 September 2021
Abstract:
In this short review, it is going to discuss the chemical structure of lignin. Hence the chemical structure of lignin is phenolic high crossed linking polymer so this type of polymers has high rigidity and not so easy to decay. Thus Lignin is insoluble in most organic solvent and water but slightly soluble in basic solutions. Mono-lignols are monomers to form crosslink polymer (lignin) and there are three main types (paracoumaryl. coniferyl and sinapyl) of these monomers. Lignin’s separation process is called delignification which is the procedure of extraction lignin from botanical source. Several analytical methods have been reviewed of delignification process and the most two common approaches are kraft pulping process by utilizing alkaline solution and organosolv pulping process by utilizing organic solvents.
Keywords:
Lignin; De-lignification process; Coniferyl; Lignin linkages; Kraft pulping
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