How to Extract DNA From Oranges

You can extract DNA from an orange.
••• Images

Deoxyribonucleic Acid is considered the genetic blueprint of all living things. It exists in everything from humans and animals to microorganisms and fruit. Extracting a DNA sample from an orange requires only a few simple household products and items that can be purchased at a grocery store. This experiment is safe to perform in a classroom or in the kitchen.

    Use rubbing alcohol.
    ••• Brand X Pictures/Brand X Pictures/Getty Images

    Fill a cup with rubbing alcohol and place it in the freezer about 30 minutes before beginning the experiment.

    Remove the peel from the orange.
    ••• Hemera Technologies/ Images

    Peel the orange and cut it into small pieces.

    Use a regular kitchen blender to blend the oranges.
    ••• Jupiterimages, Brand X Pictures/Brand X Pictures/Getty Images

    Put the orange pieces into a blender and cover them with warm water. Add a teaspoon of salt, then blend until a thick, easily pourable liquid is formed.

    Position the coffee filter over a glass jar and pour the mixture into the filter until the jar fills about halfway. Remove the filter.

    Use regular dish soap.
    ••• George Doyle/Stockbyte/Getty Images

    Add 2 tsp. of liquid dish soap to the jar and carefully stir it. Avoid making bubbles.

    Use a toothpick to pick up the DNA.
    ••• Comstock/Comstock/Getty Images

    Remove the cold alcohol from the freezer and slowly pour it into the orange mixture, down the side of the jar. You can use an eye dropper for this. Do not pour it directly into the center of the mixture. Use only enough alcohol to form a thin, separate layer on top of the orange mixture. Leave the mixture to stand for about 10 minutes, undisturbed. The DNA will coalesce and form a long white strand that will float to the top of the alcohol. Use a toothpick to pick it up and study it.

    Things You'll Need

    • 1 tsp. salt
    • Dish soap
    • Rubbing alcohol
    • Blender
    • Glass jar
    • Eye dropper
    • Coffee filter

Related Articles

DNA Extraction by Spooling Method
How to Make a Vitamin C Indicator
How to Stain Chitin
How to Make Skim Milk Agar Plates
How to Remove Bee Propolis Stains
What Is Expressed When Neither Copy of an Allele Completely...
How to Make a 3-D DNA Model for High School Biology
How to Make Your Own Agar for Petri Dishes
How to Grow Penicillin for a Science Project
Nucleic Acid Facts
What Does Chemical Analysis Reveal About DNA?
The Effects of pH on Catechol Oxidase
How to Convert Starch to Sugar
What Materials Can I Use to Make a DNA Model?
The Uses for Watermelon Rind
How to Make a Bromothymol Blue Solution
What Types of Molecules Catalyze RNA Splicing?
How to Make a DNA Model Using Pipe Cleaners
Test Tube Science Experiments for Kids
How to Dissolve EDTA in Water