When Iodine is added to amylose, the helical shape of the unbranched polysaccharide traps Iodine molecules, producing a deep blue-black complex. Amylopectin, cellulose, and Glycogen react with iodine to give red to brown colors. Glycogen produces a reddish-purple color.
What is the effect of iodine on glycogen ?
it depends on structure of glycogen.
Iodine forms colour complexes with polysaccharides. The colour of the complex depends of the 3d structure of the polysaccharide. Starch is a coiled structure, which turns blue when bound to IKI (iodine solution), whereas glycogen, which is a branched molecule, turns red/brown.
Red coloured rocks usually owe their colour to the presence of iron in the makeup.
No when you but iodine with sarch for example a potato the starch reacrs with the iodine and it turns black
yellowIron(II) chloride, also known as ferrous chloride, is the chemical compound of formula FeCl2.FeCl2 crystallizes from water as the greenish tetrahydrate, aqueous solutions of FeCl2 are yellow.
crimson red
Iodine forms colour complexes with polysaccharides. The colour of the complex depends of the 3d structure of the polysaccharide. Starch is a coiled structure, which turns blue when bound to IKI (iodine solution), whereas glycogen, which is a branched molecule, turns red/brown.
it should give dark brown color with high concentration of glyogen
yes amylose yields a blue color and amylopectin yields a purple color
No, iodine does not colour rocks red. However, a presence of chromium in rocks emits a red colour when exposed to yellow/green light.
Yes, they are helical. The change in colouration is due to iodine being trapped in the helix. Difference in colour is due to the different wavelength of light being absorbed when iodine form bonds with the glucose molecules in the helix.
It is a pinkish, red colour.
Iodine tests for complex sugars. Glycogen is a complex sugar and will change dark purple when iodine solution is added (color is irrelevant, all you really need to know is that the change to a specific color signifies a presence of a macro molecule)
Red
The color not change.
Startch have two types of polymer chain,one is amylose and another is amylopectin.Amylose is simple straight chain of glucose(1--->4 linkage),while amylopectin have branching.At branching point,there is 1--->6 linage and 1--->4 linkage in every subchain. So,in startch 1-6 linkage comes after 20 to 25 gucose monomer,while in gycogen this linkage comes very frequently.....
Haemoglobin
Pretty sure yellow, then red precipitate forms. As far as I can tell.