and starch digestion. The presentation is approximately 7-10 minutes long and I will be glad to answer your questions at the end. Slide 2 Starch is important carbohydrate in human diet containing in potatoes, maize, rice, cassava. It is produced by most green plants as energy source. Pure starch is a white, tasteless and odorless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin. Depending on the plant, starch generally contains 20 to 25% amylose and 75 to 80% amylopectin by weight. Glycogen, the glucose store of animals, is a more highly branched version of amylopectin. In industry, starch is converted into sugars, for example by malting, and fermented to produce ethanol in the manufacture of beer, whisky and biofuel. It is processed to produce many of the sugars used in processed foods. The biggest industrial
PGA, F6P ja trioosfosfaatide poolt. Plants produce starch by first converting glucose 1-phosphate to ADP-glucose using the enzyme glucose-1-phosphate adenylyltransferase. This step requires energy in the form of ATP. The enzyme starch synthase then adds the ADP-glucose via a 1,4-alpha glycosidic bond to a growing chain of glucose residues, liberating ADP and creating amylose. By contrast, starch synthesis occurs within chloroplasts. The first step is a condensation of glucose-1-phosphate withATP. Starch synthesis requires withdrawal of hexose-P from the mesophyll cellular pool. Using hexose-P for starch synthesis requires its a_________ by ATP. Only occurs in actively photosynthesizing cells. 87. Nimetage ühendid, mis floeemis liikudes tagavad mittefotosünteesivate kudede varustamise fotosünteesi produktidega. H2O, suc2 88
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