run something into something. 1. to guide or route something, such as a wire or a pipe, into something or a place. The worker ran the circuit into each room. He ran in the circuit as specified. 2. to guide something into something; to drive or steer something into something else.
A change of color to a blue-black or purple color suggests that starch is present. If there is no change in color, this suggests no starch is detectable. Note the change of the iodine to black on the potato (right) but not the apple (left). (10% Tincture of iodine.) Potato contains starch, but apple does not.
When performing the iodine test for starch, the iodine molecules are fit into the helical structure of amylose, hence give the dark purple/blue color. Amylopectin. Amylopectin is a highly branched polysaccharide which is also a part of starch.70-80% of the starch consists of amylopectin. As in amylose, there are some glucose molecules linked with Î±-1,4-glycosidic bonds forming a linear structure of amylopectin.hen performing the iodine test for starch, the iodine molecules are fit into the helical structure of amylose, hence give the dark purple/blue color. Amylopectin. Amylopectin is a highly branched polysaccharide which is also a part of starch.