31. These three components are interwoven, and direct covalent linkages exist between the lignin and the hemicellulose . 32. Some systems claim to wash out hydrolysed hemicellulose sugars and most of the protein as water-solubles. 33. Although hemicellulose is depleted, it is better for the reed to remain in an overall consistent environment. 34. The major constituents of natural fibers ( lignocelluloses ) are cellulose, hemicellulose , lignin, pectin and ash. 35. The major polysaccharides making up the primary cell wall of land plants are cellulose, hemicellulose , and pectin. 36. Xylosan is the dehydrated product of the 5-carbon xylose sugar monomer, a major component of hemicellulose . 37. The biomass is primarily composed of carbohydrate polymers cellulose, hemicellulose , and an aromatic polymer ( lignin ). 38. Lignin and hemicellulose in the wood break down and impart the sherrylike character and tawny color to the clear distillate. 39. These cells then go on to form thickened secondary cell walls, composed mainly of cellulose, hemicellulose and lignin. 40. Next in abundance is hemicellulose , which is around 20 % in deciduous trees but near 30 % in conifers.
