FGP
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Fermentation.
A fermentation using rye bran used to be a method of producing a 'sour' in early bleaching (1800s). Can somebody on this forum tell me which
acid compound ultimately resulted from this process?
Thanks.
FGP in UK.
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AngelEyes
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Just a guess but maybe...ethanoic (acetic)?
Maybe they just let it ferment and then react with atmospheric O<sub>2</sub> to get their acid.
Seems like a waste of good alcohol to me though...
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chemoleo
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Another one may be Lactic acid - together with acetic acid those are the two most likely ones.
It's hard to do more than guessing with so litle data!
Never Stop to Begin, and Never Begin to Stop...
Tolerance is good. But not with the intolerant! (Wilhelm Busch)
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guaguanco
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Yes, acetic and lactic are the most likely fermentation products.
| Quote: | Originally posted by chemoleo
Another one may be Lactic acid - together with acetic acid those are the two most likely ones.
It's hard to do more than guessing with so litle data! |
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Tacho
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I vote for lactic. 
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FGP
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| Quote: | Originally posted by Tacho
I vote for lactic. |
Surely lactic acid comes from milk, not fermented bran?
Fred.
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I am a fish
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Lactic acid is an extremely common biological acid. It isn't just found in milk.
1f `/0u (4|\\| |234d 7|-|15, `/0u |234||`/ |\\|33d 70 937 0u7 /\\/\\0|23.
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PHILOU Zrealone
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If you use good conditions and select species; you could get as much compounds as you want by playing on all parameters:
-T
-O2 or not
-N2 sources
-C sources
-S sources
-...
-pH
-Osmotic pressure
-Food
-Preactivation or not.
All the above provide environement stress factors influencing the biochemical pathway...anabolism and catabolism.
-Starting material
-Starting microorganism
From this one can get nearly anything from anything...
-Amines from nitrocompounds.
-Cetons
-polyols
-aminoacids
-peptides
-carboxylic acids (tartric, citric,oxalic,acetic, formic,glutaric,....)
-alcohols
....
All te above have been obtained by fermentations.
 
But the hardest work is to study, isolate and regulate the media to get the best yield.
PH Z (PHILOU Zrealone)
"Physic is all what never works; Chemistry is all what stinks and explodes!"-"Life that deadly disease, sexually transmitted."(W.Allen)
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