🔎 Lignin – Definition and Explanations

Introduction

Possible structure of lignin

The lignin with is one of the main components of the tree cellulose (Cellulose is a carbohydrate made up of linear chains of molecules…)hemicellulose and removable items. we find lignin (Lignin is one of the main components of wood, along with cellulose, hemicellulose and…) mainly in vascular plants and some algae and its main functions are to provide strength, waterproofing.water (Water is a ubiquitous chemical compound on Earth, essential for everyone…) and great resistance fragmentation (In biology, decomposition is the process by which objects are organized, whether…). A plant (Plants (Plantae Haeckel, 1866) are multicellular organisms…) lignin, mainly localized between cells, can be from 15% to 35% (see pectocellulose walls), but finds one of them. amount (Quantity is a general metrology term (count, amount); scalar,…) important within them. Although lignin a network (A computer network is a set of devices connected to each other to exchange information…) three dimensional hydrophobic (A compound is said to be hydrophobic (Greek hydro, hydro = water and…) complex, the base unit essentially boils down to the phenylpropane unit. Lignin is the second most common renewable biopolymer soil (Earth is the third planet in the solar system in order of distance…) after cellulose and between them they collect more than 70% biomass (In ecology, biomass is the total amount of matter (mass) of all species…) common. yes, yeshour (An hour is a unit of time. The word also means magnitude…) Available information presents several profitable selling points compared to lignin petrochemical (Petrochemistry is the science that deals with the use of compounds…) so use massive (Can be used as a mass word 🙂 whom it burns (In the presence of fuel oxygen and energy….

BIOSYNTHETIC PATHWAY: lignin is a molecule with a precursorget it (L-alanine is one of the 20 most common amino acids. It is hydrophobic,…). This amino acid (An amino acid is an organic molecule with a carbon skeleton and…) to obtain it will undergo a cascade of reactions involving enzymes from the methyltransferase family. molecule (A molecule is an electrically neutral chemical compound consisting of at least two atoms, which…) sima-mosil alcohol dehydrogenase. It is this compound, called conifer alcohol monomer, that leads to the formation of lignin under the action of peroxidase. It should be noted that this biosynthetic pathway is not unique, because if one of the enzymes of the biosynthetic pathway affecting the formation of lignin is inhibited, another polymorphic form of lignin is observed, which gives the “wood” a reddish appearance. .

He appeared Devon (The Devonian is a geological system extending from 416 ± 2.8…) (-380 million years) with the Pteridophyte group.

History

In 1856, the term lignin (lat lignumtree) appeared for the first time in literature scientist (A scientist dedicated to the study of a science or sciences and…) in the publication chemist (A chemist is a scientist who studies chemistry, that is… science.). Franz Ferdinand Schulze (1815-1873). On the other hand, as early as 1839, the French chemist Anselme Payen “issue (Matter is the substance that makes up any body that has material reality. Its…) encrusting” had only one connection mechanical (In everyday terms, mechanics is the field of machines, engines, vehicles, organs, etc.) with cellulose.

The aromatic character of lignin was first demonstrated in 1868, and in 1897, Swedish scientist P. Klasen described lignin as non-cellulosic and confirmed its aromatic nature. After World War I, several studies confirmed that phenol was a component of lignin, but its phenylpropane structure and derivatives were not clearly defined until 1927.

Features and lignification

Lignin is placed in the secondary wall of certain plant cells and gives them more strength because lignin is very resistant to compression. In addition, lignin has the power of waterproofing cells due to its hydrophobicity. Thus we find walls impregnated with lignin in the cells of the tissues used to support the plant (sclerenchyma). transportation (Transportation is the act of moving something or someone from one place to another, most often…) water and mineral salts (xylem).

As a rule, lignified cells have become impermeable and lost their properties cytoplasm (Cytoplasm refers to the contents of a living cell. More specifically, it is…) and they only get their role herbal (A group of classical scientific classifications under the term plant…) only when you die.

Lignification is a key process in the evolution of land plants. In fact, it is what allows growth height (Height has several meanings depending on the subject area.) woody plants. This ability made it possible to have an upright habit that favors receptionenergy (Energy in common sense refers to anything that allows you to do work, energize, etc.) bright L’together (In set theory, a set intuitively defines a collection…) is a prerequisite for the conquest of the earth’s environment. The ability of plants to produce lignin was established at the beginning of the Paleozoic (with a strong development from the Devonian) and characterizes tracheophytes (see Flora (Flora is the totality of plant species present in a place…) Rinia).

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