Table 1.

Lignocellulose.

Nutrient	Monomers	Linkage	Source
Cellulose	Glucose	β-(1–4)	Fruits, vegetables (generally in plants), cereals
Hemicellulose	arabinose, mannose, galactose, glucose, xylose and uronic acid	β-(1–4) glycan	Cereals, bran, timber, legumes, rice husk, wheat straw
Lignin	p-coumaryl alcohol, coniferyl alcohol, and sinapyl alcohol	β-O-4 aryl ether bond	Fruit stones, vegetables (filaments of the garden bean), cereals, soft and hardwood
Pectin	Galacturonic	α-(1→4)-glycosidic	In the skin of fruits (majorly apples, quinces), vegetables