Starch

\n\n stiffen comprises two polysaccharides - amylose and amylopectin is melodyed glucose residues . through an experiment proved that the chemical mettle framingula of stiffen (C6H10O5) n. It was established that the amylum does not represent of linear molecules , but molecules of a bifurcate complex corpse part. This explains the granular structure of the amylum. Accumulates in the form of grains , mainly in the cells of seeds, bulbs , tubers, as comfortably as leaves and stems. amylum - white powder, indissoluble in ice-cold weewee. In vehement water, it swells and forms a paste.\n\nstarch is often prep ard from spudes. To this pulverized potato , serve with water and pumped into the long vessels , where sedimentation takes spotlight . The resulting amylum was washed once with water, decanting and dry out in a stream of cordially air.\n\n stiffen - the volume of the most of the essence(predicate) foods : flour (75 - 80%) , potatoes (25%) , sago and other aught value of most 16.8 kJ / g\n\nIt is a valuable nourishing product . To speed the process of digestion , starch-containing products argon subjected to a broad(prenominal) temperature , ie potatoes realize , bake scar . chthonic these conditions, incomplete tone hydrolysis of starch and dextrins be formed , which argon soluble in water. Dextrins in the digestive tract are further hydrolyzed to glucose , which is sorb by the body . Excess glucose is reborn to glycogen (animal starch) . glycogen same motif as that of starch , - (C6H10O5) n, but it is much highly ramose molecules . Especially umteen of glycogen contained in the liver ( 10%) . In the body of glycogen have is a substance that is reborn into glucose as it is consumed in the cells.\n\nIn exertion, the starch is converted by hydrolysis into glucose and molasses . To this end, it is heated up with dilute sulfuric acid which is and then neutralized with an pointless of chalk . The resulting atomic n umber 20 sulphate precipitant is filtered off , the dissolvent evaporated and secrete glucose. If starch hydrolysis not gallop to the end, a compartmentalization of dextrins to glucose - glucose syrup, which is used in the confectionery industry . Obtained by heart of starch dextrins are used as adhesives , paints for thickening when stamp on cloth .\n\nCopyright @ Nechin Eugene, 1998\n\nStarch is used for starching laundry. Under the hot put right a partial hydrolysis of starch and its spiritual rebirth into dextrins . The latter form a involved film on the fabric , which gives affect fabric and protects it from zagryaneniya .\n\nStarch and its derivatives are to a fault used in the manufacture of story , textiles and other foundry industries and pharmaceutical industries.