What is enzymatic lyzed lignin and why enzymatic lyzed lignin is the fastest pyrolysis

Lignin. It is a class of complex compounds that are naturally difficult to decompose, and is one of the main components of plants (the others are mainly cellulose and hemicellulose). In nature, the decomposition of lignin is mainly carried out by fungi.

Extracellular and intracellular enzymes (a biocatalyst) secreted by fungi convert cellulose and hemicellulose into monosaccharides.

And can be further fermented into alcohol or the production of protein feed and other high value-added products, the remaining enzymatic hydrolyzed residue of lignin deep processing and utilization, not only can turn waste into treasure, reduce environmental pollution, can be made into fuel rods or converted into other lignin.

Deep-processed products, and can directly reduce the process cost of cellulase hydrolysis. The remaining enzymatic hydrolysis residue is the so-called enzymatic hydrolysis of lignin.

Lignin is a complex phenolic polymer formed from four alcohol monomers (p-coumarol, coniferol, 5-hydroxyconiferol, and saccinool).

Lignin is one of the components that make up the cell wall of plants and has the effect of connecting cells.

Due to different monomers, lignin can be divided into three types: syringyl lignin (S-lignin) polymerized from lilacylpropane structure monomer, guajacyl lignin (G-lignin) polymerized from guajacyl propane structure monomer, and hydroxyphenyl lignin (hydroxyphenyl lignin, h-lignin); Gymnosperms mainly contain guaiacyl lignin (g), dicots mainly contain guaiac-lilac-lignin (G-S), and monocots contain guaiacyl-lilacyl-p-hydroxyphenyllignin (G-S-H). From a botanical point of view, lignin is a substance that surrounds fibrous bundle cells and thick-walled cells such as tracheids, ducts and wood fibers, and makes these cells have a specific chromogenic reaction (add a drop of resorroglucinol solution, wait for a while, and then add a drop of hydrochloric acid, which is red); From a chemical point of view, lignin is a polymer formed by the random polymerization of highly substituted phenyl propane units, which, together with cellulose and hemicellulose, form the main component of the plant skeleton, second only to cellulose in quantity.

Lignin is filled in the cellulose framework to enhance the mechanical strength of the plant body, which is conducive to the water transport of the transport tissue and the resistance to the invasion of the adverse external environment.

Lignin is abundant in hard tissues such as wood, but is rarely found in vegetables. It is usually found in the seed parts of beans, wheat bran, cocoa, chocolate, strawberries and raspberries. Its most important function is to adsorb bile acids, the main components of bile, and eliminate them from the body.

In addition, although the details are not yet known, the structure of lignin is very similar to that of polyphenols, so there should be a close relationship between lignin and polyphenols. In short, both have a good effect on the body.

Lignin is a complex phenolic polymer formed from four alcohol monomers (p-coumarol, coniferol, 5-hydroxyconiferol, and saccinool). Due to the complex chemical composition of lignin, ligninase should be a complex enzyme like cellulase.

In fact, ligninases include lignin peroxidase, manganese peroxidase and laccase. These enzymes are capable of degrading organic compounds such as lignin and polycyclic aromatic hydrocarbons.

Lignin is structurally similar to polyphenols).

Summary. The thermogravimetric analysis curve of melamine-modified lignin only has a strong weight loss peak between 250 and 350, and its peak temperature is about 310, which is lower than the temperature (350) of the main weight loss peak of melamine and enzymatic lignin pyrolysis. It is worth noting that before 350, the actual weight loss rate of melamine modified lignin pyrolysis was higher than the theoretical weight loss rate. After 350, the actual value is significantly lower than the theoretical value.

Why is the pyrolysis speed of enzymatic lyzed lignin the fastestCompared with other industrial lignin, the reactivity of enzymatic lyzed lignin is higher, and it contains less other chemical cavity guessing products. The enveloped wood nunsic essence contains a large number of hydroxyl groups and other active groups, which is conducive to the preparation of lignin-based new materials by urea modification and melamine modification, which also provides a new way for lignin to prepare nitrogen-containing carbon materials.

Why is the pyrolysis weight loss rate of enzymatic hydrolysis of lignin higher than that of brown rot wood?

Hello are you still there.

Senpai. The weight loss rate of enzymatic hydrolyzed lignin is low, especially at higher pyrolysis temperature, when the heating rate is 10 min, the pyrolysis yield of urea and melamine modified lignin is higher than that of unmodified enzymatic lyzed lignin, which indicates that the modification process of urea and melamine melamine changes the pyrolysis process of lignin and the structure of the product carbon.

The weight loss rate of brown rot fungus and treated wood decreased with the extension of insulation treatment time, and the weight loss rate at 3h reached the minimum value of the scattered Zen section. The weightlessness rate from large to early to small is praised as steam, carbonization, and vacuum.

Thermogravimetric analysis of melamine-modified lignin only has a strong weight loss peak between 250 and 350, and its peak temperature is about 310, which is lower than the temperature (350) of the main weight loss peak of melamine and enzymatic lignin pyrolysis alone. It is worth noting that before 350, the actual weight loss rate of cyanamide modified lignin pyrolysis in the tribulo cavity was higher than the theoretical weight loss rate. After 350, the actual value is significantly lower than the theoretical value.

Lignin is a complex compound that is naturally difficult to decompose, and is one of the main components of plants (the others are mainly cellulose and hemicellulose). In nature, the decomposition of lignin is mainly carried out by fungi. Extracellular and intracellular enzymes (a kind of biocatalyst) secreted by fungi can convert cellulose and hemicellulose into monosaccharides, and can be further fermented into alcohol or other high value-added products such as protein feed.

The remaining enzymatic hydrolysis residue is the so-called enzymatic hydrolysis of lignin.