Are common in both vegetable and in the animal, having a great biological importance. The simplest monosaccharide is glycolic aldehyde, which is a aldodioza. Tetrozele not found in nature. Pentoses are widespread in nature: arabinose, xylose, ribose, and hexoses: glucose, galactose, fructose, sorboza.Dintre plant polysaccharides starch and cellulose mentions, and of the animal glycogen stated.
Chromatographic Typical chromatographic method discovered by Russian botanist M. TVET (1906), using columns of particulate absorbent (activated carbon, aluminum oxide and so on in glass tubes) through which flows slowly separating substances whose solution follows. Different substances absorb in different regions of the spine. These regions may be even more distant by washing the column with another solvent. Desorb substances are then successively ...
Polysaccharides are obtained by eliminating a,, n "water molecules between multiple molecules of monosaccharides.- Is a mixture of two polysaccharides: amylose and amylopectin- Macromolecular structure- C6 H12 O6 → [C6 H10 O5] n- Industrial starch is made from potatoes or wheat flour- Appears as a fine, white, more or less bright- In industry, acid hydrolysis of starch is used in sugar processing and enzymatic hydrolysis to obtain ethanol
Cellulose - [C6 H10 O5] n- Is in the form of macromolecules filiform- 6 n 5 n CO2 + H20 → [C6 H10 O5] n n + 6 O2- Fresh pure cellulose obtained from cotton fibers- Cellulose is a white substance, fibrous macromolecular structure, tasteless and odorless, insoluble in water, dilute mineral acids and in organic solvents- The study of esterification led to the conclusion that each group C6 H10 O5 are contained three hydroxyl groups, on this basis, the molecular formula of cellulose can be written as:
Glycogen - [C6 H10 O5]it is called animal starch''is found in all cellsis a white powder, soluble in water but insoluble in alcoholby acid hydrolysis, splits glycogen into glucose