Chemgineer
Hazard to Others
Posts: 174
Registered: 25-5-2021
Member Is Offline
|
|
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 
|
|
|
Hexabromobenzene
Hazard to Self
Posts: 99
Registered: 27-4-2021
Member Is Offline
|
|
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...
|
|
|
Chemgineer
Hazard to Others
Posts: 174
Registered: 25-5-2021
Member Is Offline
|
|
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?
|
|
|
Hexabromobenzene
Hazard to Self
Posts: 99
Registered: 27-4-2021
Member Is Offline
|
|
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
|
|
|
unionised
International Hazard
Posts: 5104
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
Lactic acid is used in some kettle descalers so it is a supermarket supply (if you find the right store/ brand).
|
|
|
Texium
Administrator
Posts: 4517
Registered: 11-1-2014
Location: Salt Lake City
Member Is Offline
Mood: PhD candidate!
|
|
It’s also sold in pure form at homebrew stores
|
|
|
EF2000
Hazard to Others
Posts: 111
Registered: 10-5-2023
Location: The Steppes, now trapped in the forest zone
Member Is Offline
Mood: wrooom
|
|
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
|
|
|
Chemgineer
Hazard to Others
Posts: 174
Registered: 25-5-2021
Member Is Offline
|
|
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).
|
That certainly is a strange Japanese guy!
|
|
|
UC235
National Hazard
Posts: 565
Registered: 28-12-2014
Member Is Offline
Mood: No Mood
|
|
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.
|
|
|
Precipitates
Harmless
Posts: 36
Registered: 4-12-2023
Location: SE Asia
Member Is Offline
|
|
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.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
