Lignin is an aromatic polymer that contains anoxyproprophenol or its derivative structure in an amorphous, molecular structure widely present in the plant body.
The xylem of the plant, a structure responsible for transporting water and minerals, contains a large amount of lignin that keeps the xylem extremely high in hardness to extend the weight of the whole plant.
Lignin is a kind of material composed of polymerized aromatic alcohols, which is present in the wood tissue. The main role is to harden the cell wall by forming an interlaced network, which is the main component of the secondary wall.
Lignin is mainly located between the cellulose fibers, from the compression effect. In woody plants, lignin accounted for 25%, is the world’s second most abundant organic matter (cellulose is the first).
Lignin is a complex phenolic polymer formed by four alcohol monomers (coumariol, pineal alcohol, 5-hydroxy pine and alcohol, mustard alcohol).
Lignin is one of the components of the plant cell wall, and has the effect of connecting the cells. Lignin is a polycyclic organic organism with many negative groups, which has a strong affinity for high-valent metal ions in the soil.
As the monomer is different, lignin can be divided into three types: from the lignin propane monomer monomer polymerization of lignin lignin (syringyl lignin, S-lignin), by the more wood-based propane structure (Guaiacyl lignin, G-lignin) and p-hydroxyphenylpropane monomeric monomers formed by polymerization of para-hydroxy-phenyl lignin (para-hydroxy-phenyl lignin, (G), dicotyledonous plants mainly contain transgenic wood-lignin lignin (GS), monocotyledonous plants are transgenic wood-purple Clove base – p – hydroxyphenyl lignin (GSH). From the botanical point of view, lignin is surrounded by trachea, catheters and wood fiber and other fiber bundles and thick-walled cells outside the material, and these cells have a specific color reaction (plus melamine solution solution to a moment And then add a drop of hydrochloric acid, that is, red) material; from a chemical point of view, lignin is a highly substituted phenyl propane unit random polymerization of the polymer, it and cellulose, hemicellulose together to form plants The main components of the skeleton are second only to cellulose. Lignin is filled in the framework of the cellulose to enhance the mechanical strength of the plant, which facilitates the transport of water and the resistance to the infiltration of the external environment.
Lignin in wood and other hard tissue content is more, vegetables are rare to contain. Generally present in the seeds of legumes, wheat bran, cocoa, strawberries and raspberries. Its most important role is to adsorb bile the main component of bile acid, and its exclusion in vitro.
In addition, although the details of the situation is still unknown, but the structure of lignin and polyphenols are very similar, therefore, lignin and polyphenols should have a close relationship. In short, both have a good effect on the body.