IKI Test Results

 

The following were tested with IKI:

 

#1   Distilled Water                           

#2   Glucose                                       

#3   Maltose                                      

#4   Sucrose

#5   Starch                                         

#6   Potato extract

#7   corn flakes
#8   bread

#9   milk

#10 unknown solution (may vary)

 

 

Which of the samples contain starch as indicated by a positive IKI test?

 

IKI reacts with the coiled polysaccharide structure of starch. Based on your results, does sugar (glucose, maltose, etc) have the same structure as starch necessary to react with IKI?

 

IKI binds with maltodextrin, a short polymer of glucose producing a brown color. Which of the samples contain maltodextrin?