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Iodine turns blue-black when added to a protein solution such as starch. This color change indicates the presence of complex polysaccharides like glycogen or amylose.

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1y ago

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Related Questions

What is the initial colour of an iodine solution?

The initial color of an iodine solution is yellow-brown.


What is the colour of of an iodine solution?

An iodine solution is typically dark brown or reddish-brown in color.


What colour is an iodine solution?

An iodine solution is typically a dark brown or purple color.


What color is starch with iodine solution?

it is a yellowish/orange colour but when iodine is present, than it will turn an dark-blue/black colour


Why is rice brown in colour when iodine solution is put on it?

cause iodine(brown) stains the rice


What colour does iodine solution turn when starch is presant?

It turns a dark purple/blue colour


Which liquid can easily dissolve the green colour from the leaf?

iodine solution


What colors does starch turn if there is a little amount present?

starch will not change its own colour but it can change the colour of iodine solution. iodine solution is originally brown. after adding starch, it will turn into dark blue.


What colour does iodine solution turn red litmus paper?

The color not change.


What color gives if starch reacts with iodine?

When iodine reacts with starch, the solution will turn a brownish colour.


How amylase breakdown starch?

To test starch: To test starch you take the food sample, and add iodine solution if the colour turns black this means starch is present. To test for protein: To test for protein, you take the food sample and add Biuret A and Biuret B and shake, if the colour turns lilac this means that protein is present.


A student adds iodine solution to egg white and waits for a color change How long will the student have to wait for a change?

The student should see a color change within a few minutes after adding iodine solution to egg white. The color will likely change from yellow to blue-black as the iodine reacts with the protein in the egg white.