Chemgineer
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Lactic acid from supermarket supplies?
I am wondering if I can produce lactic acid from rice water and milk via fermentation.
Once the cuds have been removed I wonder If i could fractionally distil the whey to get a reasonable concentration at a boiling point of 122 deg C.
Has anyone had a go at this? I could even make some cheese while i'm waiting 
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Hexabromobenzene
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Because of the contamination of the spores of clostridia, you can get an butyric acid or butanol fermentation instead of lactic acid. It is even
easier and cheaper to get butyric acid with fermentation than getting alcohol
Molded bread, whitewashing, hot water and peel potatoes. This is all you need
See:
https://www.sciencemadness.org/whisper/viewthread.php?tid=15...
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Chemgineer
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That's very interesting, but as butyric acid has a much higher boiling point than lactic acid, I should be able to tell which one i have?
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Hexabromobenzene
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Usually, during fermentation, acid is obtained in the form of salts. For example, calcium lactate or calcium butyrate in the form of very diluted
solution (2-5%). This solution can be concentrated, for example, freezing
But calcium lactate can be fermentated to calcium butyrate by clostridia
You can find a guide to growing various bacteria in textbooks of microbiology
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unionised
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Lactic acid is used in some kettle descalers so it is a supermarket supply (if you find the right store/ brand).
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Texium
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It’s also sold in pure form at homebrew stores
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EF2000
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I guess you'll find that video interesting: sharpest Cucumber kitchen knife in the world (yes, cucumber knife).
Using rice, corn and cucumbers, that strange Japanese guy makes lactic acid, then carbon-filled polylactic acid, and then a knife.
Why a knife? My guess: it's some Taoist hermit practice of self-improvement through applied materials science.
You will not make cheese with that procedure though. Byproducts include a jar of pickles and (untasty) yogurt (from test for Lactobacillus).
Wroom wroom
"The practice of pouring yourself alcohol from a rocket fuel tank is to be strongly condemned encouraged"
-R-1 User's Guide
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Chemgineer
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Quote: Originally posted by EF2000  | I guess you'll find that video interesting: sharpest Cucumber kitchen knife in the world (yes, cucumber knife).
Using rice, corn and cucumbers, that strange Japanese guy makes lactic acid, then carbon-filled polylactic acid, and then a knife.
Why a knife? My guess: it's some Taoist hermit practice of self-improvement through applied materials science.
You will not make cheese with that procedure though. Byproducts include a jar of pickles and (untasty) yogurt (from test for Lactobacillus).
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That certainly is a strange Japanese guy!
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UC235
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I admire the interest in producing it from scratch, but 60% sodium lactate solution is readily available for home soapmakers and is not in any way
suspicious to purchase a gallon or so of.
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Precipitates
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It's not impossible to get high-purity lactic acid (depending on your set-up), and could be an interesting experiment if you would like to explore the
science*
Lactic Acid Production
10.1 and 10.2.
*As per posts above, if you just want lactic acid, buy it directly.
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