Iris Publishers - World Journal of Agriculture and Soil Science (WJASS)
New Trends of the Polysaccharides as a Drug Authored by Ebtsam M El Kady Introduction Polysaccharides (PSs) are a high molecular weight polymer, consisting of at least ten monosaccharides mutually joined by glyosidic linkages. The glycosyl moiety of hemiacetal or hemiketal, together with the OH group of another sugar unit, formed the glyosidic linkages [1]. Unlike protein and nucleic acid, the structure of PSs is far more complicated based on the differences in (i) composition of monosaccharide residues, (ii) glyosidic linkages, (iii) sequence of sugar units, (iv) degrees of polymerization, and (v) branching point. Apart from those, other factors, such as differences of cultivars, origins, and batches, or even extraction methods and fraction procedures are evidenced to have significant influence on the physicochemical and structural properties of PSs. Owing to the rapid development of modern analytical techniques; the identification of PSs structures is becoming more and more ...