Lodine solution is an indicator for starch. When starch is present, it turns a dark purple color. When starch is not present, it is a reddish pink color. Iodine solution is placed on
the cut side of a potato. Within seconds, a blue/purple color appears. What does this
indicate about the potato?
o
This is a negative test for starch
This is a positive test for starch
O This is a positive test for proteins
This is a negative test for proteins