Question

What is lignin and pectin?

Answer 1

Lignins are phenolic polymers formed from three p-hydroxycinnamyl alcohols as primary precursors 2 … that consist of a cellulose/hemicellulose tridimensional network embedded in a hydrophilic pectin gel … 8,9 In the literature, lignin is thus usually described as a “hydrophobic glue …...

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Answer 2

Lignin fills the spaces in the cell wall between cellulose, hemicellulose, and pectin components, especially in vascular and support tissues: xylem tracheids, vessel elements and sclereid cells. ... The crosslinking of polysaccharides by lignin is an obstacle for water absorption to the cell wall.

Lignin is a complex polymer of monolignols (aromatic alcohols). It is a integral part of secondary cell wall

of plants and some algae.

Pectin is a heteropolysccharide present in the primary cell wall of plants