M ATERIALS: 2-5 ozplasti c c ups 1 set ofm easuring spoons 1- pl asti cknife forcuttin g kiw i 1- pl asti c spoon formixing and m ashing kiw i 1- # 2 cone c offe e filt er 25 ml ofdistill ed water clear-coloredshampoo, suchas Suave Dail y Clarifying Shampoo 1/2 o f a kiwi table salt , e ith er iodizedornon-iodized 1- plasti c t ransfer pipette (m edicine dropper) 1 sealed t esttube of 9 5% ethanol (grain alcohol) laboratory in structio ns Fruit Cup DNA Extraction
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Fruit Cup DNA Extraction. Step 1 Into one of the 5 oz cups add 1 teaspoon of shampoo. Fruit Cup DNA Extraction.
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Transcript
MATERIALS:
2- 5 oz plastic cups1 set of measuring spoons1- plastic knife for cutting kiwi1- plastic spoon for mixing
and mashing kiwi1- #2 cone coffee filter25 ml of distilled waterclear-colored shampoo, such as
Suave Daily Clarifying Shampoo1/2 of a kiwitable salt, either iodized or non-iodized1- plastic transfer pipette
(medicine dropper)1 sealed test tube of 95% ethanol
(grain alcohol)laboratory instructions
Fruit CupDNA Extraction
Step 1
• Into one of the 5 oz cups add 1 teaspoon of shampoo.
Fruit CupDNA Extraction
Step 2
• Add 2 pinches of table salt.
Fruit CupDNA Extraction
Step 3
• Add 25 ml of distilled water to make a final volume of 30 ml or about 1/3 the volume of the cup.
• Dissolve the salt and shampoo by stirring slowly to avoid foaming.
Fruit CupDNA Extraction
Step 4
• Using the plastic knife, peel and cut 1/2 of a kiwi into small pieces.
Fruit CupDNA Extraction
Step 5
• Using the plastic spoon, add the kiwi to the solution from steps 1-3.
Fruit CupDNA Extraction
Step 6
• Mash the kiwi against the side of the cup with the back of the spoon for 10 minutes.
Fruit CupDNA Extraction
Step 7
• While one member of your group mashes the kiwi, another member will place a #2 cone coffee filter inside the second 5 oz plastic cup.
Fruit CupDNA Extraction
Step 7(cont.)
• Fold the coffee filter’s edge around the cup so that the filter does not touch the bottom of the cup.
Fruit CupDNA Extraction
Step 8
• Filter the mixture by pouring it into the filter and letting the solution drain for several minutes until there is approximately 5 ml (covers the bottom of the cup) of filtrate to test.
Fruit CupDNA Extraction
Step 9
• Obtain a test tube of cold alcohol. For best results, the alcohol should be as cold as possible.
Fruit CupDNA Extraction
Step 10
• Fill the plastic pipette with kiwi solution to the 1 ml mark.
Fruit CupDNA Extraction
Step 11
• Add kiwi solution from the pipette to the cold alcohol.
Fruit CupDNA Extraction
Step 12
• Let the solution sit for 2 to 3 minutes without disturbing it.
• It is important not to shake the test tube.
Fruit CupDNA Extraction
Step 13
• You can watch the white DNA precipitate out into the alcohol layer.