Abstract
Enzyme, including laccase and peroxidase, catalyzed oxidative polymerization of technical bagasse soda lignin and low molecular weight ultra-filtrated kraft pulp lignin in methanol-water solution were studied. The weight average molecular weight of original macromonomer and polymerized lignin were characterized with alkaline size exclusion chromatograph system. Laccase treatment increased the molecular weight of both technical bagasse lignin and ultra-filtrated lignin up to 20 times in 24h. Compared to the low molecular weight ultra filtrated lignin, the reaction rate of bagasse lignin was consistant during the whole procedure. The reaction time and the laccase dosage were investigated to obtain the maximal molecular weight. The horseradish peroxidase treatment was a potential method for low molecular weight ultra filtrated lignin.
Keywords: Laccase, Peroxidase, Enzymatic polymerization, Technical soda lignin, Ultra-filtrated kraft lignin.
Call for Papers in Thematic Issues
From Lab Bench to Algorithm: The Future of Organic Chemistry Powered by AI
Organic chemistry, with its intricate dance of molecules and reactions, is undergoing a transformation fuelled by the power of Artificial Intelligence (AI) and Machine Learning (ML). The integration of AI/ML with Organic Chemistry is revolutionizing the field by enhancing the efficiency and accuracy of chemical research and development. These technologies ...read more
Hybrid-Materials Catalyzed Conversion of Molecules and Substances
To address the global energy and environmental issues, and inspired by the photosynthesis of plants, scientists have material shifted their focus from traditional chemistry to novel ones to discover new substances and molecules. Hybrid materials with their unique synergistic effects, interface regulation capabilities, and functional integration have emerged as a ...read more
Natural terpenes: The Chemistry and Biological Significance
Natural organic compounds such as alkaloid, flavonoid, terpene, protein, and saccharide have been widely applied in the fields of medicine, food supplements, agriculture, cosmetics and material sciences. Terpenes as an important natural products present intensively structural diversity and widely pharmacological properties. As an important origin of medicine, the chemistry and ...read more
Porphyrazine, its Analogues and Their Metalcomplexes: Theoretical Consideration and Experimental Data
Porphyrazines are specific analogues of porphyrins – macrocyclic compounds with tetrapyrrole macrocycles, which are key components of a number of natural compounds, in particular chlorophyll and heme, playing a decisive role in the processes of reversible transfer of oxygen molecules in living organisms. They differ from porphyrins in that their ...read more
Related Books
Ionic Liquids for Organic Synthesis
Glycals and their Derivatives
2-Deoxy-D-Glucose: Chemistry and Biology
Chiral Ionic Liquids: Applications in Chemistry and Technology
Basics of Organic Chemistry: A Textbook for Undergraduate Students
Advances in Organic Synthesis
The Synthetic Methods, Structures, and Properties of the Ca-C σ Bond Organocalcium Containing Compounds
Advances in Organic Synthesis
Chemistry of Bipyrazoles: Synthesis and Applications
Advances in Organic Synthesis
23
