21. In addition, low molecular weight heparins can also be chemoenzymatically synthesized from simple disaccharides . 22. All monosaccharides are reducing sugars, along with some disaccharides , oligosaccharides, and polysaccharides. 23. Disaccharides are formed from two monosaccharides and can be classified as either reducing or nonreducing.24. :Guess is partly right for the disaccharide but there are other factors as well. 25. A disaccharide is formed from two monosaccharides. 26. The glucose can be further elongated to a disaccharide by the addition of a galactose. 27. Hyaluronic acid is energetically stable, in part because of the stereochemistry of its component disaccharides . 28. Both non-structural and structural carbohydrates are hydrolysed to monosaccharides or disaccharides by microbial enzymes. 29. The biosynthesis of disaccharides , oligosaccharides and polysaccharides involves the action of hundreds of different glycosyltransferases. 30. The saccharides are divided into four chemical groups : monosaccharides, disaccharides , oligosaccharides, and polysaccharides.