A critical assessment of the current state of. knowledge on a topic â with a view to. researching one of the âgapsâ in that body of. knowledge. As a critical assessment, an effective review. analyses and synthesises the published work on a. topic.
Because of the strong hydrogen bonds that occur between cellulose chains, cellulose does not melt or dissolve in common solvents. Thus, it is difficult to convert the short fibers from wood pulp into the continuous filaments needed for artificial silk, an early goal of cellulose chemistry. he existence of cellulose as the common material of plant cell walls was first recognized by Anselm Payen in 1838. It occurs in almost pure form in cotton fiber and in combination with other materials, such as lignin and hemicelluloses, in wood, plant leaves and stalks, etc.
Cellulose Definition and Structure. Cellulose is a a largely indigestible polysaccharide (a complex carbohydrate), composed of thousands of glucose molecules [1]. Function. In the human intestine, cellulose acts as an insoluble fiber, which can absorb water and thus increase the bulk of the stool. Cellulose cannot be digested, but can be partly broken down (fermented) by beneficial large intestinal bacteria into gases, and short-chain fatty acids, which can be absorbed [3].