Re: [DIYbio] Minimum ethanol % to precipitate strawberry DNA?

Where I live, here in California, 151 proof is the maximum allowed for sale.

Even the brand-name Ever-clear is only 151 here, instead of the higher purity you get elsewhere.

As a chemist, I must point out that there are many less toxic alcohols, such as oleyl alcohol, lauryl alcohol, and stearyl alcohol. In fact, octacosanol and triacontanol lower LDL and raise HDL when ingested. They aren't useful as solvents in this discussion, but someone might be interested in making Acidophilus good at producing them... :-)


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On Tue, May 7, 2013 at 2:30 PM, Nathan McCorkle <nmz787@gmail.com> wrote:
I'm not sure why others are recommending any alcohol other than
ethanol for this. ONLY USE ETHANOL IF YOU WANT TO DRINK IT (and make
sure the ethanol is USP grade or sold as a product intended for human
consumption)

I've had success with Bacardi 151, I'm sure lower percentages will
work but it would be best if the two solutions were chilled in a
freezer first. For the aqueous phase (the strawberry filtrate) you
could probably just blend in some ice cubes to make a slurry, but the
ethanol will definitely do better the colder it is so throw the bottle
in a freezer for 30-60 minutes before use.

On Tue, May 7, 2013 at 10:25 AM,  <williambeaufoy@gmail.com> wrote:
> We're going to make some DNA daiquiris for the London Hackspace spacewarming
> party this Sunday 12th May. The original recipe calls for a 75% rum, but not
> wanting to spend £80 on alcohol, we're looking at a cheaper 63% rum.
>
> What's the minimum % you can use, and will yield be lower at lower ethanol
> concentrations?
>
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-Nathan

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