The simplest of sugars, the universal currency of energy, which prefers the brain and the heart muscle is respected.If a person has violated the mechanisms of control and the level of glucose in the blood falls below a certain norm, there comes an inevitable loss of consciousness and death.Diabetes as a pathology assimilation of this material leads to a "hunger amidst plenty."Therefore, the food, containing glucose, should be treated with caution, not only for diabetics - the system of regulation of sugar metabolism difficult.
her intently studying in courses of organic chemistry, bioorganic chemistry and biochemistry.What is glucose?The chemical properties of its arise from the structural features of the building.They are two-fold - while it has an aldehyde group and a hydroxyl group, that is, in fact, is both an aldehyde and a polyhydric alcohol (as the group of both first and second type in its structure are not alone).
Start by aldehyde properties.Unlike fructose, glucose exhibits chemical properties on the aldose type - that is, it is possible to safely carry the silver mirror reaction.This reaction is extraordinarily beautiful, demanding purity reagents and equipment.Thus from the ammoniacal silver solution, bound in the complex, the metal is obtained.If everything was clean, it turns out pretty smooth film, like a mirror, which caused the appearance of the title.But if something was not clean, you get loose clumps of gray mass, ugly and able to enter the inexperienced experimenter misleading.So wash vials properly!
What else "knows" how glucose?The chemical properties of the aldehyde type are not limited to only the silver mirror reaction.Another very typical reaction is the hydrogenation, ie accession to the aldehyde group of hydrogen in the presence of a catalyst metal nickel.This produces alcohol sorbitol.By the way, is an industrial process for its preparation, a cheap and simple, however, the starting material is a complex corn starch instead of pure glucose but starch is hydrolyzed to her.
At least two properties aldehyde is glucose.The chemical properties of proving the nature of the substance alcohol, also exist.For example, the qualitative response to the hydroxyl group.Simply add under alkaline conditions to the test sample cupric hydroxide.Thus, if glucose is present, a copper precipitate is formed, and it turns bright saturated blue solution.This reaction is proof alcoholic properties of glucose.
But there is another interesting reaction that is triggered by yeast and faced almost everything.What makes glucose?The chemical properties are closely related to biology.The enzymes produced ethanol destroying fungi two compounds in each molecule, causing the formation of carbon dioxide.Such are the chemical properties of glucose.This produces a characteristic smell: a smell of yeast dough - and make sure that it really enough ethanol.
difficult to glucose?Physical and chemical properties of its predictable, based on their formulas, but the substance keeps a lot of mysteries, for example, some forms of the body undigested.
