lignin


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Related to lignin: hemicellulose

lignin

 [lig´nin]
a woody substance closely associated with cellulose in plants and grouped with the polysaccharides, although it is not actually a carbohydrate; it combines with bile acids to prevent their absorption. Lignin fibers are less digestible by gut bacteria than other polysaccharides.

lig·nin

(lig'nin),
A random polymer of coniferyl alcohol accompanying cellulose and present in vegetable fiber and wood cells; a source of vanillin (by oxidation of lignin); lignin composition varies with plant species. It is one of the most abundant biopolymers in nature.
[L. lignum, wood]

lignin

(lĭg′nĭn)
n.
A complex polymer, the chief noncarbohydrate constituent of wood, that binds to cellulose fibers and hardens and strengthens the cell walls of plants.

lig·nin

(lig'nin)
A water-insoluble fiber found in wheat bran, whole grains, and vegetables.
[L. lignum, wood]

lignin

a complex, noncarbohydrate polymer found in cell walls, whose function is to provide mechanical support to the cell, as in xylem VESSELS and bark fibres. Such cells are said to be ‘lignified’, the lignin being laid down by the cell on the inside of the cellulose cell wall and, since lignin forms an impermeable barrier, the cells are dead.

lig·nin

(lig'nin)
A water-insoluble fiber found in wheat bran, whole grains, and vegetables.
[L. lignum, wood]
References in periodicals archive ?
This report provides in depth study of "Lignin Products Market" using SWOT analysis i.e.
In the past, different specialized chemicals and pretreatment methods have been used to improve enzyme access to cellulose but were ineffective at removing lignin. The use of strong acids, ionic liquids, ammonia, and sulfite treatments have somewhat improved the digestibility of cellulose, but these methods also leave lignin behind, making cellulose expensive to recover.
According to Gosselink, the upscaling of existing applications and development of new ones can lead to additional income for companies in a range of industries: Lignin is, for instance, already successfully used in products such as cement, emulsion asphalt, composites and adhesives for fibreboards.
Efforts on understanding the utility of lignin within a polymer matrix allow the practical realization of industrial lignin as sustainable filler for the plastic manufacturers.
Lignin samples were obtained from cooperating industrial partners and were produced using different processing techniques and under different production conditions.
Domtar is a leader in lignin separation and the development of lignin-based materials.
Lignin the natural glue that holds wood fibers together is a byproduct of the Kraft pulping process that has traditionally been burned to provide energy to a mill.
[9] further revealed that lignin reduced the liquid limits and plasticity index of the stabilised soil samples when compared with rice husk ash stabilised samples.
Once these carbohydrates are consumed, the fungi look for new food sources by degrading structural carbohydrates and lignin (Eriksson et al., 1990).
Determination of the contents of the nutrients followed the Chinese National Standard GB/T 2677.10 [16] for holocellulose, GB/T 744 [17] for cellulose, and GB/T 2677.8 [18] for lignin. For each experimental condition, three specimens were used in determining each nutrient, and the average was calculated within an allowable error.
Steam explosion lignin was donated by Jilin KAIYU Biomass Development & Utilization Co.
Wood and plants can be a good source of cellulose and lignin; nevertheless, the microstructural changes that happen during delignification have scarcely been studied.