How to Convert Starch to Sugar

How to Convert Starch to Sugar
••• minadezhda/iStock/GettyImages

Starch is a carbohydrate found in potatoes, rice, maize, wheat, corn and other grains. You might want to convert starch to sugar to brew your own beer, as the sugar can be transformed into ethanol by a process of fermentation. Wheat and corn are the most commonly used ingredients for transforming starch into sugar.

Convert Starch to Sugar

    Grind either wheat or corn kernels in the hammermill.

    Transfer the ground grain into a container suitable for cooking and mix it with twice as much water.

    Heat up the mixture to roughly 150 to 168 degrees Fahrenheit. Leave the mixture at this temperature for up to two hours. During this time, enzymes in the grain convert the starch to sugar.

Test Your Mixture

    Take a sample of the mashed grain and set it aside.

    Add a drop of iodine to the mixture.

    Watch the mixture for changes in color. If the iodine turns clear or yellow, all the starch has been converted to sugar. If it stays a dark color, the mixture needs to remain at the above temperature for a longer time.

    Things You'll Need

    • Wheat or corn kernels
    • Hammermill
    • Iodine


    • If your grain is very dry, soak it in water for a day before heating it.

      If while steaming the mixture becomes a thick, stiff paste, adding a small amount of malt can soften it.

Related Articles

How to Make Rock Candy at School
How to Hydrolyze Starch With Heat & Hydrochloric Acid
Amylase Starch Experiments
How to Dissolve EDTA in Water
How to Make a 1% Sucrose Solution
How to Extract DNA From Oranges
How to Calculate CV Values
How to Make Sugar Water for Bees
How to Mix Calcium Chloride and Water
How Does a Sugar Crystal Grow?
How to Make Wood Alcohol Through Distillation
How to Make Hummingbird Nectar
How to Make Bouncy Putty
How to Design an Experiment to Test How pH Affects...
Homemade Agar Plates
The Uses for Watermelon Rind
How to Convert Kilojoules to Kilocalories
How to Remove Bee Propolis Stains
How to Separate Alcohol From Water
How to Find a Z Score

Dont Go!

We Have More Great Sciencing Articles!