Blend 15 seconds on high speed.
Strain the mixture into a beaker.
Add 1 Tbsp. dish detergent.
Transfer mixture to 3 test tubes.
Tilt each test tube slightly.
Slowly pour isopropyl alcohol into the test tube to form a layer.
Record observations immediately, and in 24 hours. Store in fridge.
Weigh extracted DNA after 24 hours.
The blending breaks down the cells of the DNA source.
The salt provides the DNA with a favorable enviroment.
The detergent breaks down the two sacks: cell membranes and the nucleus. The enzymes in the soap break down the molecules and the membranes and release the cell contents which include the DNA. Almost all of the DNA is from the cell nucleus.
To one of my experiments I added a pinch of meat tenderizer. This product contains enzymes which are also proteins. Proteins help break up the cell membrane.
The isopropyl alcohol does not dissolve the DNA which floats up to the top. The material at the bottom of the test tube is cell scum.
Add 1/4 tsp liquid detergent. Mix every half minute for 5 minutes, trying not to create foam.
Tilt the cylinder and slowly add 1 tablespoon of alcohol so it forms a layer.