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Ethanol precipitation is a method used to purify and/or concentrate RNA, DNA and polysaccharides such as pectin and xyloglucan from aqueous solutions by adding ethanol as an antisolvent.Contents.thanol precipitation is a method used to purify and/or concentrate RNA, DNA and polysaccharides such as pectin and xyloglucan from aqueous solutions by adding ethanol as an antisolvent. Contents.
DNA is not soluble inethanol. The colder the ethanol, the less soluble the DNA will be in it. Thus make sure to keepthe ethanol in the freezer or on ice. Procedures/Activities Step: 1 Duration: 10 minutes Teacher may choose prior to class to prepare the DNA extraction buffer.he colder the ethanol, the less soluble the DNA will be in it. Thus make sure to keepthe ethanol in the freezer or on ice. Procedures/Activities Step: 1 Duration: 10 minutes Teacher may choose prior to class to prepare the DNA extraction buffer.