Figure 6. Mixtures of the iodine test solution with carbohydrates 1 – 4. Left: Immediately after addition to iodine test solution. Right: 30 seconds after mixing of the solutions

From

The Iodine Test for Reducing Sugars – A Safe, Quick and Easy Alternative to Copper(II) and Silver(I) Based Reagents

Holger Fleischer

World Journal of Chemical Education. 2019, 7(2), 45-52 doi:10.12691/wjce-7-2-3